ADUC7020 Analog Devices, ADUC7020 Datasheet - Page 2
ADUC7020
Manufacturer Part Number
ADUC7020
Description
Manufacturer
Analog Devices
Datasheet
1.ADUC7029.pdf
(96 pages)
Specifications of ADUC7020
Mcu Core
ARM7 TDMI
Mcu Speed (mips)
40
Sram (bytes)
8192Bytes
Gpio Pins
14
Adc # Channels
5
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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
Rev. D | Page 2 of 96
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