ADUC7124_14 Datasheet, PDF (1/110 Pages) Analog Devices – Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler

Data Sheet
Precision Analog Microcontroller, 12-Bit Analog I/O, Large
Memory, ARM7TDMI MCU with Enhanced IRQ Handler
ADuC7124/ADuC7126
FEATURES
Analog input/output
Multichannel, 12-bit, 1 MSPS ADC
Up to 16 ADC channels
Fully differential and single-ended modes
0 V to VREF analog input range
12-bit voltage output DACs
4 DAC outputs available
On-chip voltage reference
On-chip temperature sensor (±3°C)
Voltage comparator
Microcontroller
ARM7TDMI core, 16-bit/32-bit RISC architecture
JTAG port supports code download and debug
Clocking options
Trimmed on-chip oscillator (±3%)
External watch crystal
External clock source up to 41.78 MHz
41.78 MHz PLL with programmable divider
Memory
126 kB Flash/EE memory, 32 kB SRAM
In-circuit download, JTAG-based debug
Software-triggered in-circuit reprogrammability
Vectored interrupt controller for FIQ and IRQ
8 priority levels for each interrupt type
Interrupt on edge or level external pin inputs
On-chip peripherals
2× fully I²C-compatible channels
SPI (20 MBPS in master mode, 10 MBPS in slave mode)
With 4-byte FIFO on input and output stages
2× UART channels
With 16-byte FIFO on input and output stages
Up to 40 GPIO port
All GPIOs are 5 V tolerant
4× general-purpose timers
Watchdog timer (WDT) and wake-up timer
Programmable logic array (PLA)
16 PLA elements
16-bit, 6-channel PWM
Power supply monitor
Power
Specified for 3 V operation
Active mode: 11.6 mA at 5 MHz, 33.3 mA at 41.78 MHz
Packages and temperature range
Fully specified for −40°C to +125°C operation
64-lead LFCSP (ADuC7124) and 80-lead LQFP (ADuC7126)
Tools
Low cost QuickStart development system
Full third-party support
APPLICATIONS
Industrial control and automation systems
Smart sensors, precision instrumentation
Base station systems, optical networking
Patient monitoring
FUNCTIONAL BLOCK DIAGRAM
ADC0
ADC15
CMP0
CMP1
CMP_OUT
V_REF
XCLKI
XCLKO
RST
MUX
OSC
AND PLL
PSM
POR
1MSPS
12-BIT ADC
TEMP
SENSOR
ADuC7124/ADuC7126
12-BIT
DAC
12-BIT
DAC
12-BIT
DAC
BAND GAP
REF
VECTORED
INTERRUPT
CONTROLLER
12-BIT
DAC
ARM7TDMI-BASED MCU WITH
ADDITIONAL PERIPHERALS
PLA
8k × 32 SRAM
63k × 16 FLASH/EEPROM
GPIO
4 GENERAL-
PURPOSE TIMERS
SPI, 2 × I²C,
2 × UART
JTAG
PWM
EXTERNAL
MEMORY
INTERFACE
DAC0
DAC1
DAC2
DAC3
Figure 1.
Rev. D
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