Freescale Semiconductor
Data Sheet: Product Preview
Document Number: SC33690DS
Rev. 5, 02/2007
MC33690
SOIC-20
MC33690 Standalone Tag
Reader Circuit
The standalone tag reader circuit (STARC) is an integrated
circuit dedicated to the automotive immobilizer applications.
It combines the antenna drivers and demodulator necessary to
interface with a transponder.
A low dropout voltage regulator and a physical interface fully
compatible with the ISO 9141 norm are also available.
The STARC is fabricated with the SMARTMOSTM3.5
technology. This process is a double layer metal 1.4µm
45V technology, combining CMOS and bipolar devices.
• Contactless 125 kHz tag reader module:
– Self synchronous sample and hold demodulator
– Amplitude or phase modulation detection
– High sensitivity
– Fast read after write demodulator settling time
– Low resistance and high current antenna drivers, 2W @
150mA (typ.)
– Bidirectionnal data transmission
– Multi-tag, multi-scheme operation
• Low dropout voltage regulator:
– Wide input supply voltage range from 5.5V up to 40V
– Output current capability up to 150mA DC with an
external power transistor
– 5V output voltage with a
±5%
accuracy
– Low voltage reset function
– Low current consumption in standby mode:
– 300µA (typ.)
• ISO 9141 transmitter and receiver module:
– Input voltage thresholds ratiometric to the supply
voltage
– Current limitation
– Output slew rate control
– No external protection device required
Pin Connections
VSUP
SOURCE
GATE
TD1
VSS
VDD
TD2
MODE1
MODE2
RD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Tx
Rx
K
AM
XTAL1
XTAL2
LVR
DOUT
CEXT
AGND
ORDERING INFORMATION
Operating
Junction
Temperature
Range
T
J
=
−40°C
to
125°C
TJ =
−40°C
to
125°C
Device
Package
MC33690DW
MC33690DWE
SOIC 20
SOIC 20
(ROHS)
This document contains information on a product under development. Freescale reserves the
right to change or discontinue this product without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
Table of Contents
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1 Tag Reader Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Read Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Write Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
ISO 9141 Physical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Communication Modes Description . . . . . . . . . . . . . . . . . . . . .9
Standalone Configuration with One-Wire Bus . . . . . . . . . . . .10
7.1 Timing Definitions for a 8 MHz Crystal . . . . . . . . . . . . .11
Standalone Configuration with Two-Wire Bus. . . . . . . . . . . . .12
Direct Connection to a Microcontroller Configuration . . . . . . .13
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Low-Voltage Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Tag Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
ISO 9141 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . .19
Application Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Figure 8. Modes Access Description in
Two-wire Bus Configuration . . . . . . . . . . . . . . . . . . . . .
Figure 9. Configuration B State Diagram . . . . . . . . . . . . . . . . . .
Figure 10.Configuration C State Diagram . . . . . . . . . . . . . . . . .
Figure 11.Low Voltage Reset Waveform . . . . . . . . . . . . . . . . . .
Figure 12.Demodulator Parameters Definition . . . . . . . . . . . . . .
Figure 13.VSUP, VDD, and Source Internal Circuits . . . . . . . . .
Figure 14.GATE Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . .
Figure 15.TD1, TD2, DOUT, and RX Internal Circuits . . . . . . . .
Figure 16.AGND Internal Circuits. . . . . . . . . . . . . . . . . . . . . . . .
Figure 17.CEXT Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . .
Figure 18.RD Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 19.MODE1, MODE2, and TX Internal Circuits . . . . . . . .
Figure 20.LVR Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 21.XTAL2 and XTAL1 Internal Circuits . . . . . . . . . . . . . .
Figure 22.AM Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 23.K Internal Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 24.Standalone Configuration with One-Wire Bus . . . . . .
Figure 25.Standalone Configuration with Two-Wires Bus . . . . .
Figure 26.Direct Connection to a Microcontroller. . . . . . . . . . . .
12
12
13
15
17
19
19
19
20
20
20
20
21
21
22
22
23
24
25
List of Tables
Table 1. Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 2. Thermal Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 3. Pin Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4
Table 4. Communication Modes Description. . . . . . . . . . . . . . . 10
Table 5. Supply Current Specifications . . . . . . . . . . . . . . . . . . . 14
Table 6. Voltage Regulator Specifications . . . . . . . . . . . . . . . . . 14
Table 7. Low-Voltage Reset Specifications . . . . . . . . . . . . . . . . 15
Table 8. Oscillator Specifications . . . . . . . . . . . . . . . . . . . . . . . 15
Table 9. Tag Reader Specifications. . . . . . . . . . . . . . . . . . . . . . 16
Table 10.ISO 9141 Interface Specifications . . . . . . . . . . . . . . . . 17
Table 11.Digital I/O Specifications . . . . . . . . . . . . . . . . . . . . . . . 18
List of Figures
Figure 1. Standalone Tag Reader Circuit . . . . . . . . . . . . . . . . . . . 3
Figure 2. Tag Reader Block Diagram . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Current Flow When Buffers are Switched Off . . . . . . . . 7
Figure 4. Voltage Regulator Block Diagram . . . . . . . . . . . . . . . . . 8
Figure 5. ISO 9141 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. Mode Access Description in
One-Wire Bus Configuration . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Configuration A State Diagram . . . . . . . . . . . . . . . . . . 11
MC33690 Standalone Tag Reader Circuit, Rev. 5
2
Freescale Semiconductor
Optional: External N channel MOS required for sourced current > 50mA.
A recommended reference is MMFT 3055VL from Freescale.
VBAT
C
1
GATE
SOURCE
VDD
10mF
VSS
8 MHz
R
A
L
A
R
1
C
A
RD
R
2
Tag Reader
TD1
XTAL1
XTAL2
MODE1
MODE2
DOUT
AM
VBAT
AGND
510W
Tx
ISO 9141 Interface
K
Rx
VDD
Voltage Regulator
VSUP
LVR
TD2
C
EXT
10nF
CEXT
Figure 1. Standalone Tag Reader Circuit
MC33690 Standalone Tag Reader Circuit, Rev. 5
Freescale Semiconductor
3
Table 1. Maximum Ratings
Rating
Supply voltage
Supply voltage without using the voltage regulator
(V
SUP
= V
DD
)
Voltage on SOURCE
Current into/from GATE
Voltage on GATE
Voltage on pins:
MODE1/2, CEXT, DOUT, LVR, XTAL1/2, Rx, Tx
Voltage on RD
Voltage on K and AM
Current on TD1 and TD2
(Drivers on and off)
Voltage on AGND
ESD voltage capability
1
ESD voltage capability
1
Solder heat resistance test (10s)
Junction temperature
Storage temperature
1
Symbol
V
SUP
V
DD
—
—
—
—
—
—
—
—
—
—
—
T
J
T
s
Value
V
SS
−0.3
to
+40
V
SS
−0.3
to
+7
V
SS
−0.3
to
+40
0
V
SS
−0.3
V
SS
−0.3
to V
DD
+0.3
±10
V
SS
−3
to 40
±300
V
SS
±0.3
±2000
±200
260
170
−65
to
+150
Unit
V
V
V
mA
V
V
V
V
mA
V
V
V
°C
°C
°C
Human Body Model, AEC-Q100-002 Rev. C; Machine Model, AEC-Q100-003 Rev. E.
Table 2. Thermal Characteristics
Characteristic
Junction to ambient thermal resistance (SOIC20)
Symbol
R
th
Value
80
Unit
°C/W
Table 3. Pin Function Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
Function
VSUP
SOURCE
GATE
TD1
VSS
VDD
TD2
MODE1
MODE2
RD
Power supply
External N channel transistor source
External N channel transistor gate
Antenna driver 1 output
Power and digital ground
Voltage regulator output
Antenna driver 2 output
Mode selection input 1
Mode selection input 2
Demodulator input
Description
MC33690 Standalone Tag Reader Circuit, Rev. 5
4
Freescale Semiconductor
Description
Table 3. Pin Function Descriptions (continued)
11
12
13
14
15
16
17
18
19
20
AGND
CEXT
DOUT
LVR
XTAL2
XTAL1
AM
K
Rx
Tx
Demodulator ground
Comparator reference input
Demodulator output (5V)
Low Voltage Reset input/output
Oscillator output
Oscillator input
Amplitude modulation input
ISO 9141 transmitter output and receiver input
ISO 9141 receiver monitor output
ISO 9141 transmitter input
1
1.1
Description
Tag Reader Module
The tag reader module is dedicated for automotive or industrial applications where information has to be transmitted
contactless.The tag reader module is a write/read (challenge/response) controller for applications that a demand high security
level.
The tag reader module is connected to a serial-tuned LC circuit that generates a magnetic field power supplying the tag. The
use of a synchronous sample and hold technique allows communication with all available tags using admittance switching
producing absorption of the RF field.
Load amplitude or phase shift modulation can be detected at high bit rates up to 8 kHz. The typical operational carrier frequency
of the tag reader module with an 8 MHz clock is 125 kHz.
MC33690 Standalone Tag Reader Circuit, Rev. 5
Freescale Semiconductor
5
分立器件
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
