ADUC7021 Analog Devices, ADUC7021 Datasheet - Page 2

• Manufacturer Part Number: ADUC7021
• Manufacturer: Analog Devices

Specifications of ADUC7021

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 13
• Adc # Channels: 8

ADuC7019/20/21/22/24/25/26/27/28/29
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
General Description ......................................................................... 4
Specifications..................................................................................... 6
Absolute Maximum Ratings.......................................................... 16
Pin Configurations and Function Descriptions ......................... 17
Typical Performance Characteristics ........................................... 31
Terminology .................................................................................... 34
Overview of the ARM7TDMI Core............................................. 35
Memory Organization ................................................................... 37
ADC Circuit Overview .................................................................. 41
Detailed Block Diagram .............................................................. 5
Timing Specifications .................................................................. 9
ESD Caution................................................................................ 16
ADuC7019/ADuC7020/ADuC7021/ADuC7022 .................. 17
ADuC7024/ADuC7025 ............................................................. 21
ADuC7026/ADuC7027 ............................................................. 24
ADuC7028................................................................................... 27
ADuC7029................................................................................... 29
ADC Specifications .................................................................... 34
DAC Specifications..................................................................... 34
Thumb Mode (T)........................................................................ 35
Long Multiply (M)...................................................................... 35
EmbeddedICE (I) ....................................................................... 35
Exceptions ................................................................................... 35
ARM Registers ............................................................................ 35
Interrupt Latency........................................................................ 36
Memory Access........................................................................... 37
Flash/EE Memory....................................................................... 37
SRAM ........................................................................................... 37
Memory Mapped Registers ....................................................... 37
Transfer Function ....................................................................... 41
Typical Operation....................................................................... 42
MMRs Interface.......................................................................... 42
Converter Operation.................................................................. 44
Driving the Analog Inputs ........................................................ 45
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Nonvolatile Flash/EE Memory ..................................................... 47
Other Analog Peripherals.............................................................. 52
Digital Peripherals.......................................................................... 57
Processor Reference Peripherals................................................... 78
Hardware Design Considerations ................................................ 87
Development Tools......................................................................... 90
Outline Dimensions ....................................................................... 91
Calibration................................................................................... 46
Temperature Sensor ................................................................... 46
Band Gap Reference................................................................... 46
Programming.............................................................................. 47
Security ........................................................................................ 48
Flash/EE Control Interface ....................................................... 48
Execution Time from SRAM and Flash/EE............................ 50
Reset and Remap ........................................................................ 50
DAC.............................................................................................. 52
Power Supply Monitor ............................................................... 53
Comparator ................................................................................. 53
Oscillator and PLL—Power Control........................................ 54
3-Phase PWM ............................................................................. 57
Description of the PWM Block ................................................ 58
General-Purpose Input/Output................................................ 63
Serial Port Mux........................................................................... 65
UART Serial Interface................................................................ 65
Serial Peripheral Interface......................................................... 69
I
Programmable Logic Array (PLA)........................................... 75
Interrupt System ......................................................................... 78
Timers .......................................................................................... 79
External Memory Interfacing ................................................... 83
Power Supplies ............................................................................ 87
Grounding and Board Layout Recommendations................. 88
Clock Oscillator.......................................................................... 88
Power-On Reset Operation....................................................... 89
Typical System Configuration .................................................. 89
PC-Based Tools........................................................................... 90
In-Circuit Serial Downloader................................................... 90
Ordering Guide .......................................................................... 95
2
C-Compatible Interfaces......................................................... 71