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ADuC702x Series
Preliminary Technical Data
TABLE OF CONTENTS
ADuC702x—Specifications ............................................................3
Rev. PrB | Page 2 of 80
Terminology......................................................................................6
Absolute Maximum Ratings............................................................7
Ordering Guide.............................................................................9
Pin function descriptions..............................................................10
General Description.......................................................................19
Overview of the ARM7TDMI core..........................................19
Memory organisation.................................................................21
ADC circuit information...............................................................26
General Overview.......................................................................26
ADC Transfer Function.............................................................26
Typical Operation.......................................................................27
Converter operation...................................................................29
Driving the analog inputs..........................................................30
ADC Calibration ........................................................................30
Temperature Sensor ...................................................................30
Bandgap Reference.....................................................................30
Nonvolatile Flash/EE Memory .....................................................32
Flash/EE memory overview......................................................32
Flash/EE Memory and the ADuC702x....................................32
Flash/EE memory security........................................................32
Flash/EE Control Interface........................................................33
Execution time from SRAM and FLASH/EE.........................34
Reset and Remap........................................................................ 36
Other analog peripherals............................................................... 37
DAC.............................................................................................. 37
Power Supply Monitor............................................................... 39
Comparator................................................................................. 39
Oscillator and PLL - Power control......................................... 40
Digital peripherals.......................................................................... 42
Three-phase PWM..................................................................... 42
General Purpose I/O.................................................................. 49
Serial Port Mux........................................................................... 52
Programmable Logic Array (PLA)........................................... 62
Processor reference peripherals.................................................... 65
Interrupt System......................................................................... 65
Timers.......................................................................................... 67
ADuC702x Hardware Design considerations ............................ 75
Power supplies............................................................................ 75
Grounding and Board Layout Recommendations................. 75
Clock Oscillator.......................................................................... 76
Power-on reset operation.......................................................... 76
Typical sysem configuration..................................................... 77
Development Tools ........................................................................ 78
In-Circuit Serial Downloader................................................... 78
Outline Dimensions....................................................................... 79