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ADuCM360/ADuCM361 Hardware User Guide
UG-367
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Using the ADuCM360/ADuCM361 Low Power, Precision Analog Microcontroller
with Dual Sigma-Delta ADCs, ARM Cortex-M3
SCOPE
This user guide provides a detailed description of the ADuCM360/ADuCM361 functionality and features.
DISCLAIMER
Information furnished by Analog Devices, Inc., is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor any infringements of patents or other rights of third parties that may result from its use. Specifications subject to
change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks
and registered trademarks are the property of their respective owners.
Figure 1. ADuCM360 Block Diagram
10464-001
Σ-Δ
MODULATOR
24-BIT
Σ-Δ ADC
V
REF
AIN0
DAC, TEMP,
IOVDD/4,
AVDD/4
SINC3/4
FILTER
12-BIT
DAC
SINC2
FILTER
ON-CHIP
1.8V ANALOG
LDO
ON-CHIP
1.8V DIGITAL
LDO
POWER-ON
RESET
ON-CHIP
OSCILLATOR
(1% TYPICAL)
16MHz
GPIO PORTS
UART PORTS
2 × SPI PORTS
I
2
C PORTS
19 GENERAL-
PURPOSE
I/O PORTS
MEMORY
128kB FLASH
8kB SRAM
DMA AND
INTERRUPT
CONTROLLER
TIMER0
TIMER1
WATCHDOG
WAKE-UP TIMER
PWM
SERIAL WIRE
DEBUG,
PROGRAMMING
AND DEBUG
ARM
CORTEX-M3
PROCESSOR
16MHz
V
BIAS
GENERATOR
PRECISION
REFERENCE
ADuCM360
BUFFER
BUFFER
BUFFER
SELECTABLE
V
REF
SOURCES
CURRENT
SOURCES
AIN1
AIN2
DAC RESET
XTALO
XTALI
SWDIO
SWCLK
DVDD_REG
AVDD_REG
AVDD
AGND
AIN3
AIN4/IEXC
AIN5/IEXC
AIN6/IEXC
AIN7/VBIAS0/IEXC/
EXTREF2IN+
AIN8/EXTREF2IN–
AIN9/DACBUFF+
AIN10
AIN11/VBIAS1
IREF
GND_SW VREF– INT_REF IOVDD
IOVDDVREF+
AMP
MOD2
GAIN
Σ-Δ
MODULATOR
24-BIT
Σ-Δ ADC
V
REF
SINC3/4
FILTER
AMP
MOD2
GAIN
BUF
BUF
MUX
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. D | Page 1 of 176
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