Datasheet

ADuC7128/ADuC7129
Rev. 0 | Page 2 of 92
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
General Description......................................................................... 3
Specifications..................................................................................... 4
Timing Specifications .................................................................. 8
Absolute Maximum Ratings.......................................................... 15
ESD Caution................................................................................ 15
Pin Configuration and Function Descriptions........................... 16
Typical Performance Characteristics ........................................... 21
Terminology .................................................................................... 24
ADC Specifications .................................................................... 24
DAC Specifications..................................................................... 24
Overview of the ARM7TDMI Core............................................. 25
Thumb Mode (T)........................................................................ 25
Long Multiply (M)...................................................................... 25
EmbeddedICE (I) ....................................................................... 25
Exceptions ................................................................................... 25
ARM Registers ............................................................................ 25
Interrupt Latency........................................................................ 26
Memory Organization ................................................................... 27
Flash/EE Memory....................................................................... 27
SRAM........................................................................................... 27
Memory Mapped Registers ....................................................... 27
Complete MMR Listing............................................................. 28
ADC Circuit Overview .................................................................. 32
ADC Transfer Function............................................................. 32
Typical Operation....................................................................... 33
Converter Operation.................................................................. 36
Driving the Analog Inputs ........................................................ 37
Temperature Sensor ................................................................... 37
Band Gap Reference................................................................... 38
Nonvolatile Flash/EE Memory ..................................................... 39
Flash/EE Memory Overview..................................................... 39
Flash/EE Memory....................................................................... 39
Flash/EE Memory Security ....................................................... 40
Flash/EE Control Interface........................................................ 40
Execution Time from SRAM and FLASH/EE........................ 43
Reset and Remap ........................................................................ 44
Other Analog Peripherals.............................................................. 45
DAC.............................................................................................. 45
DDS.............................................................................................. 46
Power Supply Monitor............................................................... 47
Comparator................................................................................. 47
Oscillator and PLL—Power Control........................................ 49
Digital Peripherals.......................................................................... 51
PWM General Overview........................................................... 51
PWM Convert Start Control .................................................... 52
General-Purpose I/O ................................................................. 55
Serial Port Mux........................................................................... 57
UART Serial Interface................................................................ 57
Serial Peripheral Interface......................................................... 63
I
2
C-Compatible Interfaces......................................................... 65
I
2
C Registers................................................................................ 65
Programmable Logic Array (PLA)........................................... 69
Processor Reference Peripherals................................................... 72
Interrupt System......................................................................... 72
Timers.......................................................................................... 73
Timer0—Lifetime Timer........................................................... 73
Timer1—General-Purpose Timer ........................................... 75
Timer2—Wake-Up Timer......................................................... 77
Timer3—Watchdog Timer........................................................ 79
Timer4—General-Purpose Timer ........................................... 81
External Memory Interfacing ................................................... 83
Timing Diagrams ....................................................................... 84
Hardware Design Considerations ................................................ 87
Power Supplies............................................................................ 87
Grounding and Board Layout Recommendations................. 87
Clock Oscillator.......................................................................... 88
Power-On Reset Operation....................................................... 89
Development Tools......................................................................... 90
In-Circuit Serial Downloader................................................... 90
Outline Dimensions ....................................................................... 91
Ordering Guide .......................................................................... 92
REVISION HISTORY
4/07—Revision 0: Initial Version