ADUC7122 Datasheet, PDF (1/92 Pages) Analog Devices – Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI® MCU

Precision Analog Microcontroller, 12-Bit
Analog I/O, ARM7TDMI^® MCU
Preliminary Technical Data
ADuC7122
FEATURES
Analog I/O
13 external channel, 12-bit, 1 MSPS ADC
2 channels with programmable gain
PGA (1 to 5) input range
IOVDD power monitor channel
On-chip temperature monitor
11 general-purpose inputs
Fully differential and single-ended modes
0 V to VREF analog input range
12 × 12-bit voltage output DACs
On-chip voltage reference: 1.2 V/2.5 V
Buffered output reference sources for use with external
circuits
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, 8 kB SRAM
In-circuit download, JTAG-based debug
Software-triggered in-circuit reprogrammability
On-chip peripherals
UART, 2 × I²C and SPI serial I/O
32-pin GPIO port
4× general-purpose timers
Wake-up and watchdog timers (WDT)
Power supply monitor
Vectored interrupt controller for FIQ and IRQ
8 Priority levels for each interrupt type
Interrupt on edge or level external pin inputs
Power
Specified for 3 V operation
Active mode: 11 mA at 5 MHz, 40 mA at 41.78 MHz
Packages and temperature range
7 mm × 7mm 108-ball BGA
Fully specified for −10°C to +95°C operation
Tools
Low cost QuickStart™ development system
Full third-party support
APPLICATIONS
Optical networking, industrial control, and automation
systems
Smart sensors, precision instrumentation, base station
systems
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
Rev. PrA
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