A71X39AQFI/Q

A7139

FSK/GFSK Sub 1GHz Transceiver

Document Title

315/433/490/868/915MHz FSK/GFSK Transceiver with 2K ~ 250Kbps

Revision History

Rev. No.

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History

Initial issue

Modify contents of Document title/General description and

update some register setting recommendation

Update Specification

Add WOR by preamble and carrier, WOT function, new

preamble detect type, FIFO mode with 16K/infinite length,

auto IF and auto-ack/resend function

Update sensitivity data

Delete In-band carrier detection description. Update 24.3

MD7139-A50 application circuit

Modify 9.2.9.7 AGC Control II, RGVA value

Issue Date

Sep., 2012

Oct., 2012

Apr., 2013

Jun., 2013

Remark

Preliminary

Preliminary

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1.2

1.3

1.4

1.5

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Feb., 2014

Nov., 2014

Dec., 2014

Jan., 2015

Jul., 2015

1.0

Oct., 2013

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Important Notice:

AMICCOM reserves the right to make changes to its products or to discontinue any integrated circuit product or service

without notice. AMICCOM integrated circuit products are not designed, intended, authorized, or warranted to be suitable

for use in life-support applications, devices or systems or other critical applications. Use of AMICCOM products in such

applications is understood to be fully at the risk of the customer.

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Update interference data

Add 14.1 notice statement

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Modify 10.8 typo (“A7139 has build-in 32-bits ID register…”

changed to “A7139 has build-in 64-bits ID…”)

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Preliminary

Preliminary

Full Production

Full Production

Full Production

Full Production

Full Production

Full Production

A7139

FSK/GFSK Sub 1GHz Transceiver

Table of contents

1. Typical Applications ................................................................................................................................................. 4

2. General Description ................................................................................................................................................. 4

3. Features ................................................................................................................................................................. 4

4. Pin Configurations ................................................................................................................................................... 5

5. RF Chip Block Diagram ........................................................................................................................................... 6

6. Pin Descriptions ...................................................................................................................................................... 6

7. Absolute Maximum Ratings ..................................................................................................................................... 7

8. Specification............................................................................................................................................................ 8

9. Control Register .................................................................................................................................................... 12

9.1 Control Register Table................................................................................................................................... 12

9.2 Control Register Description.......................................................................................................................... 13

9.2.1 System clock (Address: 00h) ............................................................................................................... 13

9.2.2 PLL I (Address: 01h) ........................................................................................................................... 13

9.2.3 PLL II (Address: 02h) .......................................................................................................................... 14

9.2.4 PLL III (Address: 03h) ......................................................................................................................... 14

9.2.5 PLL IV (Address: 04h) ......................................................................................................................... 14

9.2.6 PLL V (Address: 05h) .......................................................................................................................... 15

9.2.7 PLL VI (Address: 06h) ......................................................................................................................... 15

9.2.8 Crystal (Address: 07h)......................................................................................................................... 15

9.2.9 TX I (Address: 08h) Page 0 ................................................................................................................. 16

9.2.9.1 WOR I (Address: 08h) Page1 ........................................................................................................... 16

9.2.9.2 WOR II (Address: 08h) Page 2 ......................................................................................................... 17

9.2.9.3 RF Current (Address: 08h) Page 3 .................................................................................................... 17

9.2.9.4 Power Manage (Address: 08h) Page 4.............................................................................................. 18

9.2.9.5 AGC RSSI Threshold (Address: 08h) Page 5 .................................................................................... 18

9.2.9.6 AGC Control (Address: 08h) Page 6 ................................................................................................. 19

9.2.9.7 AGC Control II (Address: 08h) Page 7............................................................................................... 19

9.2.9.8 GPIO (Address: 08h) Page 8 ............................................................................................................ 20

9.2.9.9 CKO (Address: 08h) Page 9 ............................................................................................................. 21

9.2.9.10 VCO current (Address: 08h) Page 10 .............................................................................................. 22

9.2.9.11 Channel Group (I) (Address: 08h) Page 11...................................................................................... 23

9.2.9.12 Channel Group (II) (Address: 08h) Page 12..................................................................................... 23

9.2.9.13 FIFO (Address: 08h) Page 13 ......................................................................................................... 23

9.2.9.14 Code (Address: 08h) Page 14......................................................................................................... 23

9.2.9.15 WCAL (Address: 08h) Page 15 ....................................................................................................... 24

9.2.10.0 TX II (Address: 09h) Page 0............................................................................................................ 24

9.2.10.1 IF I (Address: 09h) Page1 ............................................................................................................... 25

9.2.10.2 IF II (Address: 09h) Page2 .............................................................................................................. 25

9.2.10.3 ACK (Address: 09h) Page3 ............................................................................................................. 25

9.2.10.4 ART (Address: 09h) Page4 ............................................................................................................. 27

9.2.11 RX I (Address: 0Ah) .......................................................................................................................... 27

9.2.12 RX II (Address: 0Bh) ......................................................................................................................... 28

9.2.13 ADC (Address: 0Ch).......................................................................................................................... 28

9.2.14 Pin Control (Address: 0Dh) ................................................................................................................ 29

9.2.15 Calibration (Address: 0Eh) ................................................................................................................. 30

9.2.16 Mode Control (Address: 0Fh) ............................................................................................................. 31

10. SPI (3-wire) ......................................................................................................................................................... 32

10.1 SPI Format ................................................................................................................................................. 32

10.2 SPI Timing Chart ........................................................................................................................................ 33

10.3 Control register access ............................................................................................................................... 33

10.4 SPI Timing Specification ............................................................................................................................. 33

10.5 Reset Command......................................................................................................................................... 34

10.6 Reset TX FIFO Pointer ................................................................................................................................ 34

10.7 Reset Rx FIFO Pointer ................................................................................................................................ 34

10.8 ID Read/Write Command ............................................................................................................................ 34

10.9 FIFO R/W Command .................................................................................................................................. 35

11. Crystal Oscillator ................................................................................................................................................. 36

11.1 Use External Crystal ................................................................................................................................... 36

11.2 Use External Clock ..................................................................................................................................... 36

12. System Clock ...................................................................................................................................................... 37

12.1 Clock Domain ............................................................................................................................................. 37

12.2 System Clock and IF Filter .......................................................................................................................... 38

12.3 Example of 10Kbps data rate by 12.8MHz Xtal ............................................................................................ 38

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A7139

FSK/GFSK Sub 1GHz Transceiver

12.4 Example of special data rate by 19.6608MHz Xtal. ....................................................................................... 39

13. Tranceiver Frequency .......................................................................................................................................... 41

14. State machine ..................................................................................................................................................... 42

14.1 Key Strobe Commands ............................................................................................................................... 42

14.2 FIFO mode ................................................................................................................................................. 42

14.3 Direct mode ................................................................................................................................................ 43

15. Calibration........................................................................................................................................................... 46

15.1 IF Calibration Process ................................................................................................................................. 46

15.2. VCO band Calibration Process ................................................................................................................... 46

16. FIFO (First In First Out)........................................................................................................................................ 47

16.1 Packet Format ............................................................................................................................................ 47

16.2 Bit Stream Process ..................................................................................................................................... 47

16.3 Transmission Time...................................................................................................................................... 48

16.4 Usage of TX and RX FIFO .......................................................................................................................... 48

16.4.1 Easy FIFO Mode ............................................................................................................................... 49

16.4.2 Segment FIFO .................................................................................................................................. 49

16.4.3 FIFO Extension ................................................................................................................................. 51

16.4.3.1 FIFO Extension with maximum 16K bytes length ............................................................................. 51

16.4.3.2 FIFO Extension with infinite length .................................................................................................. 54

17. Analog Digital Converter ...................................................................................................................................... 57

17.1 Temperature Measurement ......................................................................................................................... 57

17.2 RSSI Measurement..................................................................................................................................... 57

17.3 RSSI Carrier Detector ................................................................................................................................. 57

18. Carrier Detect ...................................................................................................................................................... 57

19. RC Oscillator ....................................................................................................................................................... 58

19.1 WOT Function ............................................................................................................................................ 58

19.2 WOR Function ............................................................................................................................................ 59

19.3 TWOR Function .......................................................................................................................................... 60

20. Auto-ack and Auto-resend ................................................................................................................................... 60

20.1 Basic FIFO plus Auto-ack and auto-resend .................................................................................................. 60

20.2 WTR Behavior during auto-ack and auto-resend .......................................................................................... 62

20.3 Examples of auto-ack and auto-resend ........................................................................................................ 63

21. Auto-IF Function .................................................................................................................................................. 64

22. Battery Detect ..................................................................................................................................................... 64

23. Low Current RX mode setting .............................................................................................................................. 64

24. Application Circuit ................................................................................................................................................ 66

24.1 MD7139-A30 (315MHz Band) ..................................................................................................................... 66

24.2 MD7139-A40 (433MHz Band) ..................................................................................................................... 67

24.3 MD7139-A50 (470MHz~510MHz Band)....................................................................................................... 68

24.4 MD7139-A80 (868MHz Band) ..................................................................................................................... 69

24.5 MD7139-A90 (915MHz Band) ..................................................................................................................... 70

25. Abbreviations ...................................................................................................................................................... 71

26. Ordering Information ............................................................................................................................................ 71

27. Package Information ............................................................................................................................................ 72

28. Top Marking Information....................................................................................................................................... 73

29. Reflow Profile ...................................................................................................................................................... 74

31. Tape Reel Information ......................................................................................................................................... 75

31. Product Status..................................................................................................................................................... 76

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A7139

FSK/GFSK Sub 1GHz Transceiver

1. Typical Applications

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ISM Band Data Communication

Wireless Remote Controller

RKE (Remote Keyless Entry)

Building Automation

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Home Security

Wireless Sensor Networking

Energy Control and Management

AMR (Auto Metering Reading)

2. General Description

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Additional device features such as on-chip regulator, RSSI for clear channel assessment, a thermal sensor, low battery

detector, carrier detect, preamble detect, frame sync in FIFO mode, auto-ack and auto-resend, AIF (Auto IF function),

AFC (Auto Frequency compensation), Auto calibration (VCO, IF Filter), PLL/CLK Generator, on-chip compensated

capacitors of Xtal loading, and WOR (Wake on RX) to support the ability to periodically wake up from sleep mode to RX

mode and listen for incoming packets without MCU interaction, can be used to simplify system development and cost.

Overall, A7139’s highly integrated features and low current consumption offer a reduced BOM cost for a high

performance ISM bands product. All features are integrated in a small QFN 4X4 24 pins package.

3. Features

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Small size (QFN 4X4, 24 pins).

Frequency band: 315/433/470/510/868/915MHz.

FSK and GFSK modulation.

Programmable data rate from 2Kbps to 250Kbps.

Programmable TX power level from -34dBm to 20dBm.

On chip regulator, supports input voltage 1.9 ~ 3.6 V.

Deep sleep current (0.3uA).

Sleep current (1.5uA).

Ultra Low Current Consumption

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RX Current consumption (AGC Off) 434MHz: 3.8mA.

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In FIFO mode, preamble is self-generated by A7139. User just needs to assign the sync word to this device by ID R/W

command via SPI. For payload, the built-in separated 64-bytes TX/RX FIFO are used to be this purpose to let user R/W

the wanted payload. User can also enable additional packet features like CRC for error detection, FEC (hamming 7 by 4)

for 1-bit data correction per code word, Manchester coding, as well as data whitening for data encryption / decryption.

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For packet handling, A7139 supports direct mode and FIFO mode. In direct mode, MCU or Encoder shall deliver the

defined packet (preamble + sync word + payload) to GIO1 or GIO2/TXD pin. Then, in RX mode, MCU or Decoder can

receive the coming packet (preamble + sync word + payload) in bit sequence from GIO1 or GIO2/RXD pin.

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A7139’s

control registers

are accessed via 3-wire or 4-wire SPI interface including TX/RF FIFO, VCO frequency, to

chip calibration procedures. Another one, via SPI as well, is the unique Strobe command, A7139 can be controlled from

power saving mode (deep sleep, sleep, idle, standby), PLL mode, TX mode and RX mode. In addition to SPI, the digital

connections between A7139 and MCU are GIO1 and GIO2 (multi-function GPIO) to indicate A7139’s status so that MCU

could use either polling or interrupt for radio control.

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A7139 incorporates a baseband modem with the programmable data rate divider from 2K to 250Kbps. For a battery

powered system, A7139 supports fast PLL settling time, Xtal settling time and on-chip Regulator settling time to reduce

average power consumption. The RF synthesizer contains a VCO and a low noise fractional-N PLL with an output

channel frequency resolution of 366 Hz. The VCO frequency operates at the wanted radio frequency to cover all RF

band. Since A7139 is a low-IF architecture TRX with programmable IFBW (IF Filter Bandwidth,

50KHz/100KHz/150KHz/250KHz), the RXLO shall be configured to offset an intermediate frequency (IF) to TXRF

regarding to the IFBW setting.

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A7139 is one of AMICCOM’s

Mini Power Consumption Family

in sub 1GHz ISM band product line. A7139 is optimized

for very low power consumption (i.e. 434MHz band, 3.8mA @ RX mode). In addition, A7139 can offer a very good link

budget with a high efficient class-E power amplifier up to 20dBm and a low phase noise receiver (-107dBm RX

sensitivity @ 100Kbps / FSK / 433.92MHz). Therefore, A7139 is very suitable for battery powered application with a nice

LOS (line-of-sight) wireless range.

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A7139 is a monolithic low-IF architecture CMOS FSK/GFSK TRX for wireless applications in the 315/433/470/868/

915MHz ISM bands. This device is especially suitable for battery-powered application and the 470MHz ~ 510MHz

wireless AMR (Auto Meter Reading) in China and 868.3MHz wireless M-bus in Europe.

A7139

FSK/GFSK Sub 1GHz Transceiver

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RX Current consumption (AGC Off) 868MHz: 4.5mA.

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TX Current consumption 434MHz: 31.5mA @ 12.5dBm.

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TX Current consumption 868MHz: 67.5mA @ 13dBm.

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TX Current consumption 490MHz: 81mA @ 19dBm.

Fast PLL settling time (120us).

Supports low cost crystal (12.8/16/19.2MHz).

AGC (Auto Gain Control) for the wide RSSI dynamic range.

Programmable IF filter bandwidth (50KHz/100KHz/150KHz/250KHz).

High RX sensitivity, i.e. 490MHz.

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-119dBm at 2Kbps on-air data rate.

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-111dBm at 50Kbps on-air data rate.

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-108dBm at 100Kbps on-air data rate.

Easy to use

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Support 3-wire or 4-wire SPI.

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Unique Strobe command via SPI.

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AGC ON with 9-bits RSSI.

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AGC OFF with 8-bits RSSI.

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Auto Calibrations (VCO, IF Filter, RSSI).

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Auto IF function.

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Auto Frequency Compensation.

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Auto CRC Filtering.

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Auto FEC by (7, 4) Hamming code (1 bit error correction / code word).

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Auto-resend (max 15 cycles).

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Auto-acknowledgement.

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Manchester encoding.

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Programmable carrier sense indicator.

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Data Whitening for payload encryption and decryption.

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Separated 64 bytes RX and TX FIFO.

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Easy FIFO / Segment FIFO / FIFO Extension (16K bytes to infinite).

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Support FIFO mode with frame sync to MCU.

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Support direct mode with recovery clock output to MCU.

On chip 8-bits ADC.

Low Battery indication.

On-chip low power RC oscillator for WOT/WOR/TWOR function.

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4. Pin Configurations

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GIO2

RSSI

GND

RFI

RFO

VDD_TX

VDD_VCO

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GIO1

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VDD_PLL

VCOP

VCON

Figure 4.1 QFN4x4 Package Top View

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VDD_D

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SDIO

SCK

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GND

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