EVALUATION KIT AVAILABLE
MAXQ7665A–MAXQ7665D
16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
General Description
The MAXQ7665A–MAXQ7665D smart systems-on-a-chip
(SoC) are data-acquisition systems based on a micro-
controller (μC). As members of the MAXQ
®
family of
16-bit, reduced instruction set computing (RISC) μCs, the
MAXQ7665A–MAXQ7665D are ideal for low-cost, low-
power, embedded applications such as industrial controls
and building automation. The flexible, modular architecture
design used in these μCs allows development of targeted
products for specific applications with minimal effort.
The MAXQ7665A–MAXQ7665D incorporate a high-perfor-
mance 16-bit RISC core, a 12-bit 500ksps SAR ADC with
a programmable gain amplifier (PGA), and a full CAN 2.0B
controller supporting transfer rates up to 1Mbps. These
devices include a 12-bit DAC with a buffered voltage output
and on-chip oscillator circuitry to operate from an external
high-frequency (8MHz) crystal. There is also a built-in
internal RC oscillator as an alternative to using an external
crystal. The MAXQ7665A–MAXQ7665D contain an inter-
nal temperature sensor to measure die temperature and
a remote temperature-sensor driver. The analog functions
and digital I/O are powered from a +5V supply, while the
internal digital core is powered from +3.3V, which can be
supplied by an on-chip linear regulator. These devices also
include a dual power-supply supervisor with reset and a
JTAG interface for in-system programming and debugging.
The 16-bit RISC μC includes up to 128KB (64K x 16) of
flash memory and 512 bytes (256 x 16) of RAM.
The MAXQ7665A–MAXQ7665D are available in a 7mm x
7mm 48-pin TQFN package and are specified to operate
from -40°C to +125°C.
Applications
Features
●
Industrial Control
●
High-Performance, Low-Power, 16-Bit RISC Core
8MHz Operation, Approaching 1MIPS per MHz
Low Power (< 3mA/MIPS, DV
DD
= +3.3V)
16-Bit Instruction Word, 16-Bit Data Bus
33 Instructions (Most Require Only One Clock Cycle)
16-Level Hardware Stack
Three Independent Data Pointers with Automatic
Increment/Decrement
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
DeviceNet is a trademark of Open DeviceNet Vendor Association, Inc.
●
Program and Data Memory
Up to 128KB (64K x 16) Internal Flash
512 Bytes (256 x 16) Internal RAM
●
Smart Analog Peripherals
Low-Power, Eight Differential-Channel,
12-Bit, 500ksps ADC
Programmable-Gain Amplifier, Software-Selectable
Gain: 1V/V, 2V/V, 4V/V, 8V/V, 16V/V, 32V/V
12-Bit DAC with Buffered Voltage Output
External References for ADC and DAC
Internal (Die) and External Diode Temperature Sensing
●
Timer/Digital I/O Peripherals
Full CAN 2.0B Controller
15 Message Centers (256-Byte Dual Port Memory)
Programmable Bit Rates from 10kbps to 1Mbps
Standard 11-Bit or Extended 29-Bit Identification
Modes
Two Data Masks and Associated IDs for
DeviceNET™, SDS and Other Higher Layer
CAN Protocols
External Transmit Disable for Autobaud
SIESTA Low-Power Mode
Wake-Up on CANRXD Edge Transition
UART (LIN) with User-Programmable Baud Rate
16 x 16 Hardware Multiplier with 48-Bit Accumulator,
Single Clock Cycle Operation
Three 16-Bit (or Six 8-Bit) Programmable
Timer/Counter/PWM
Eight General-Purpose, Digital I/O Pins, with External
Interrupt Capability
All Interrupts Can Be Used as a Wake-Up
●
Crystal/Clock Module
Internal Oscillator for Use with External Crystal
On-Chip RC Oscillator Eliminates External Crystal
External Clock-Source Operation
Programmable Watchdog Timer
●
Power-Management Module
Power-On Reset (POR)
Power-Supply Supervisor/Brownout Detection for
Digital I/O and Digital Core Supplies
On-Chip +3.3V, 50mA Linear Regulator
●
JTAG Interface
Extensive Debug and Emulation Support
In-System Test Capability
Flash-Memory-Program Download
Software Bootstrap Loader for Flash Programming
●
Ultra-Low-Power Consumption
Low-Power, Stop Mode (CPU Shutdown)
Ordering Information and Pin Configuration appear at end
of data sheet.
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be
simultaneously available through various sales channels. For information about device errata, go to:
www.maximintegrated.com/errata.
19-3217; Rev 2; 4/15
MAXQ7665A–MAXQ7665D
16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
Absolute Maximum Ratings
DV
DD
to DGND, AGND, or GNDIO .........................-0.3V to +4V
DGND to GNDIO or AGND ..................................-0.3V to +0.3V
DV
DDIO
to DGND, AGND, or GNDIO .....................-0.3V to +6V
AV
DD
to DGND, AGND, or GNDIO .........................-0.3V to +6V
Digital Inputs/Outputs to DGND, AGND, or GNDIO
............................................................ -0.3V to (DV
DDIO
+ 0.3V)
Analog Inputs/Outputs to DGND, AGND, or GNDIO
................................................................ -0.3V to (AV
DD
+ 0.3V)
RESET,
XIN, XOUT to DGND, AGND, or GNDIO
................................................................-0.3V to (DV
DD
+ 0.3V)
Continuous Current into Any Pin ......................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
48-Pin TQFN (derate 40mW/°C above +70°C) .........3200mW
Operating Temperature Range
......................... -40°C to +125°C
Junction Temperature
......................................................+150°C
Storage Temperature Range
............................ -65°C to +150°C
Lead Temperature (soldering, 10s)
................................. +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(AV
DD
= DV
DDIO
= +5.0V, DV
DD
= +3.3V, f
SYSCLK
= 8MHz, V
REFDAC
= V
REFADC
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
POWER REQUIRMENTS
DV
DD
Supply Voltage Range
AV
DD
DV
DDIO
AV
DD
Supply Current
I
AVDD
Shutdown (Note 2)
All analog functions enabled
ADC enabled, f
ADC
= 1ksps, f
SYSCLK
=
8MHz
ADC enabled, f
ADC
= 500ksps, f
SYSCLK
=
8MHz
Analog Module Subfunction
Incremental Supply Current
DAC enabled (zero scale)
Internal temperature sensor enabled
Additional current when one or more of the
ADC, DAC, and/or temperature sensor is
enabled (only counted once)
PGA enabled
CPU in stop mode, all peripherals disabled
DV
DD
Supply Current
I
DVDD
High-speed mode (Note 3)
Flash erase or write mode
DV
DD
Module Subfunction
Incremental Supply Current
DV
DDIO
Supply Current
I
DVDDIO
DV
DD
supervisor and brownout monitor
HF crystal oscillator
Internal RC oscillator
All digital I/Os static at GND or DV
DDIO
(Note 4)
35
2
150
200
10
1000
µA
µA
Safe mode (RC/2 = 3.8MHz)
Normal mode
2.7
3.0
4.75
4.75
3.3
3.3
5.0
5.0
0.1
6.7
4.2
1890
305
502
128
4.5
3
20
28
50
mA
µA
mA
µA
3.6
3.6
5.25
5.25
10
8
µA
mA
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
www.maximintegrated.com
Maxim Integrated │
2
MAXQ7665A–MAXQ7665D
Electrical Characteristics (continued)
16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
(AV
DD
= DV
DDIO
= +5.0V, DV
DD
= +3.3V, f
SYSCLK
= 8MHz, V
REFDAC
= V
REFADC
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
MEMORY SECTION
MAXQ7665A
Flash Memory Size
MAXQ7665B
MAXQ7665C
MAXQ7665D
DV
DD
= +3V, at +25°C
Flash Erase/Write Endurance
Flash Erase Timing
Flash Program Timing
DV
DD
= +3V, at +85°C
DV
DD
= +3V, at +125°C
One sector
Single word
Entire flash
T
A
= +125°C, single write
First 100,000 cycles at +25°C, then retention
tested at T
A
= +125°C
20
10
512
4096
N
ADC
No missing codes
Gain = 1, bipolar mode, V
IN
= ±2500mV,
500ksps
Gain = 8, unipolar mode, V
IN
= +400mV,
142ksps
Gain = 16, bipolar mode, V
IN
= ±156mV,
142ksps
Gain = 32, bipolar mode, V
IN
= ±50mV,
142ksps
Gain = 1, bipolar, V
IN
= ±2500mV, 500ksps
Differential Nonlinearity
Offset Error
Offset-Error Temperature
Coefficient
Zero-Code Error
Gain Error
Gain-Error Temperature
Coefficient
Signal-to-Noise Plus Distortion
Total Harmonic Distortion
SINAD
THD
PGA gain = 1V/V
PGA gain = 1V/V
Bipolar, differential measurement of error for
ideal ADC output of 0x000
Exclude offset and reference error
-1.0
±8.5
-71
-85
DNL
ADC
Gain = 16, bipolar, V
IN
= ±156mV, 142ksps
All other gain settings
Input referred
±0.6
±2.5
±8
±2.5
+1.0
±5
mV
µV/°C
mV
%
ppm/°C
dB
dB
12
±0.5
±2.0
LSB
±2.0
±2.0
±1.0
±1.0
LSB
±4.0
±4.0
Years
Bytes
Words
Bits
128
64
48
32
1
100
100
0.7
11
1.5
15
360
4.5
MCycles
kCycles
kCycles
s
µs
s
KB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Flash Data Retention Time
RAM Memory Size
Utility ROM Size
ANALOG SENSE PATH
Resolution
Integral Nonlinearity
INL
ADC
www.maximintegrated.com
Maxim Integrated │ 3
MAXQ7665A–MAXQ7665D
Electrical Characteristics (continued)
16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
(AV
DD
= DV
DDIO
= +5.0V, DV
DD
= +3.3V, f
SYSCLK
= 8MHz, V
REFDAC
= V
REFADC
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Spurious-Free Dynamic Range
Conversion Clock Frequency
Sample Rate
SYMBOL
SFDR
f
ADCCLK
f
SAMPLE
t
CONV
CONDITIONS
PGA gain = 1V/V
f
SYSCLK
= 8MHz
PGA gain = 1V/V, R
SOURCE
≤ 1kΩ
Any PGA gain setting > 1V/V, R
SOURCE
≤
5kΩ
t
ACQ
plus 13 ADCCLK cycles at 8MHz
PGA gain = 1V/V, R
SOURCE
≤ 1kΩ
Any PGA gain setting, R
SOURCE
≤ 5kΩ
t
ACQ
t
RECOV
PGA gain = 1V/V, R
SOURCE
≤ 1kΩ
Any PGA gain setting > 1V/V, R
SOURCE
≤
5kΩ
5
30
50
PGA gain = 1
PGA gain = 2
Unipolar mode
PGA gain = 4
PGA gain = 8
PGA gain = 16
PGA gain = 32
PGA gain = 1
Input-Voltage Range
PGA gain = 2
PGA gain = 4
PGA gain = 8
PGA gain = 16
PGA gain = 32
Absolute Input-Voltage Range
Input Leakage Current
AIN15–AIN0
PGA gain = 1
PGA gain = 2
Small-Signal Bandwidth (-3dB)
V
IN
x gain = 100mV
P-P
PGA gain = 4
PGA gain = 8
PGA gain = 16
PGA gain = 32
www.maximintegrated.com
MIN
0.5
TYP
-91
MAX
8.0
500
142
tACQ +
1.625
2
7
375
5
UNITS
dB
MHz
ksps
Conversion Time
Channel/Gain Select Plus
Conversion Time
Track-and-Hold Acquisition Time
Turn-On Time
Aperture Delay
Aperture Jitter
µs
µs
ns
µs
µs
ns
ps
P-P
0
0
0
0
0
0
-V
REFADC
/2
-V
REFADC
/4
-V
REFADC
/8
-V
REFADC
/16
-V
REFADC
/32
-V
REFADC
/64
AGND
±20
180
140
120
100
82
80
AV
DD
1.6
0.8
0.4
0.2
0.1
+V
REFADC
/2
+V
REFADC
/4
+V
REFADC
/8
+V
REFADC
/16
+V
REFADC
/32
+V
REFADC
/64
AV
DD
V
nA
V
Bipolar mode, AIN+ to
AIN-
MHz
Maxim Integrated │ 4
MAXQ7665A–MAXQ7665D
Electrical Characteristics (continued)
16-Bit RISC Microcontroller-Based
Smart Data-Acquisition Systems
(AV
DD
= DV
DDIO
= +5.0V, DV
DD
= +3.3V, f
SYSCLK
= 8MHz, V
REFDAC
= V
REFADC
= +5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
PGA gain = 1
PGA gain = 2
Large-Signal Bandwidth (-3dB)
V
IN
x gain = 3.2V
P-P
PGA gain = 4
PGA gain = 8
PGA gain = 16
PGA gain = 32
PGA gain = 1
PGA gain = 2
Input Capacitance
Single-ended, any input
of AIN0 to AIN15
PGA gain = 4
PGA gain = 8
PGA gain = 16
PGA gain = 32
Crosstalk Between Channels
Input Common-Mode Rejection
Ratio
Power-Supply Rejection Ratio
Resolution
Differential Nonlinearity
Integral Nonlinearity
Offset Error
Offset-Error Temperature
Coefficient
Gain Error
Gain-Error Temperature
Coefficient
DAC Output Range
DC Output Impedance
Output Slew Rate
Output Settling Time
Output Short-Circuit Current
Z
OUT
Excludes reference error, tested at E68h
Excludes offset and reference drift;
calculated from FSR
No load
Termination resistance to
AGND
DAC enabled
Power-down
mode
0
0.5
105
0.6
8
-27
46
15
V
CT
CMRR
PSRR
N
DAC
DNL
DAC
INL
DAC
AIN15–AIN0, V
IN
= 1V
P-P
, 10kHz,
R
SOURCE
= 5kΩ
AIN15–AIN0 (bipolar, differential),
V
CM
= 100mV to 4.5V
AV
DD
= +4.75V to +5.25V
Guaranteed monotonic
Code 147h to E68h
Code 147h to E68h
Reference to code 040h
-70
67
12
±0.4
±0.5
±2.5
±5
±3
±2
V
REFDAC
±20
±1
±4
±30
MIN
TYP
180
140
120
100
82
80
13.6
2
4
8
16
32
-80
-90
75
dB
dB
dB
Bits
LSB
LSB
mV
µV/°C
LSB
ppm of
FSR/°C
V
Ω
kΩ
V/µs
µs
mA
pF
kHz
MAX
UNITS
DAC SECTION (DACOUT, R
L
= 5kΩ and C
L
= 100pF)
400h to C00h code swing, rising or falling
147h to E68h code swing, settling to ±0.5
LSB (Note 5)
Short to AGND
Short to AV
DD
www.maximintegrated.com
Maxim Integrated │
5
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