ADUC7122 Analog Devices, ADUC7122 Datasheet - Page 2

• Manufacturer Part Number: ADUC7122
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI® MCU
• Manufacturer: Analog Devices

Specifications of ADUC7122

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 13

ADuC7122
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
General Description ......................................................................... 4
Specifications ..................................................................................... 5
Absolute Maximum Ratings .......................................................... 14
Pin Configuration and Function Descriptions ........................... 15
Terminology .................................................................................... 19
Overview of the ARM7TDMI Core ............................................. 20
Memory Organization ................................................................... 22
ADC Circuit Overview .................................................................. 27
Nonvolatile Flash/EE Memory ..................................................... 36
Timing Specifications .................................................................. 9
ESD Caution ................................................................................ 14
ADC Specifications .................................................................... 19
DAC Specifications..................................................................... 19
Thumb Mode (T) ........................................................................ 20
Long Multiply (M) ...................................................................... 20
EmbeddedICE (I) ....................................................................... 20
Exceptions ................................................................................... 20
ARM Registers ............................................................................ 20
Interrupt Latency ........................................................................ 21
Flash/EE Memory ....................................................................... 22
SRAM ........................................................................................... 22
Memory Mapped Registers ....................................................... 22
Complete MMR Listing ............................................................. 23
ADC Transfer Function ............................................................. 28
Typical Operation ....................................................................... 29
Temperature Sensor ................................................................... 30
Converter Operation .................................................................. 33
Driving the Analog Inputs ........................................................ 34
Band Gap Reference ................................................................... 34
Power Supply Monitor ............................................................... 35
Flash/EE Memory Overview ..................................................... 36
Flash/EE Memory ....................................................................... 36
Flash/EE Memory Security ....................................................... 37
Flash/EE Control Interface ........................................................ 37
Execution Time from SRAM and FLASH/EE ........................ 40
Reset and Remap ........................................................................ 41
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Other Analog Peripherals .............................................................. 43
Oscillator and PLL—Power Control ............................................ 46
Digital Peripherals .......................................................................... 49
General-Purpose I/O ..................................................................... 52
UART Serial Interface .................................................................... 54
I
Serial Peripheral Interface ............................................................. 69
Programmable Logic Array (PLA) ............................................... 73
Interrupt System ............................................................................. 76
Outline Dimensions ....................................................................... 93
2
C ..................................................................................................... 59
DAC .............................................................................................. 43
LDO (Low dropout Regulator)................................................. 45
External Crystal Selection ......................................................... 46
External Clock Selection ........................................................... 46
Power Control System ............................................................... 47
MMRs and Keys ......................................................................... 48
PWM General Overview ........................................................... 49
PWM Convert Start Control .................................................... 51
Baud Rate Generation ................................................................ 54
UART Register Definition ......................................................... 54
Serial Clock Generation ............................................................ 59
I
I
I
SPIMISO (Master In, Slave Out) Pin ....................................... 69
SPIMOSI (Master Out, Slave In) Pin ....................................... 69
SPICLK (Serial Clock I/O) Pin ................................................. 69
SPI Chip Select (SPI CS Input) Pin ........................................... 69
Configuring External Pins for SPI Functionality ................... 69
SPI Registers ................................................................................ 70
IRQ ............................................................................................... 77
Fast Interrupt Request (FIQ) .................................................... 77
Timers .......................................................................................... 83
Timer0—Lifetime Timer ........................................................... 83
Timer1—General-Purpose Timer ........................................... 85
Timer2—Wake-Up Timer ......................................................... 87
Timer3—Watchdog Timer ........................................................ 89
Timer4—General-Purpose Timer ........................................... 91
Ordering Guide .......................................................................... 93
2
2
2
C Bus Addresses ....................................................................... 59
C Registers ................................................................................ 60
C Common Registers .............................................................. 68