AT89C5131A-RDTIM datasheet(183/186 Pages) ATMEL

183 / 186 page

Read Data .......................................................................................................... 42

Registers ............................................................................................................. 43

In-System Programming (ISP) ........................................................... 44

Flash Programming and Erasure ....................................................................... 44

Boot Process ...................................................................................................... 45

Application-Programming-Interface .................................................................... 46

XROW Bytes ...................................................................................................... 46

Hardware Conditions .......................................................................................... 46

On-chip Expanded RAM (ERAM) ....................................................... 48

Timer 2 ................................................................................................. 51

Auto-reload Mode............................................................................................... 51

Programmable Clock Output .............................................................................. 52

Programmable Counter Array (PCA) ................................................. 56

PCA Capture Mode ............................................................................................ 63

16-bit Software Timer/Compare Mode ............................................................... 63

High Speed Output Mode ................................................................................... 64

Pulse Width Modulator Mode ............................................................................. 65

PCA Watchdog Timer......................................................................................... 66

Serial I/O Port ...................................................................................... 67

Framing Error Detection ..................................................................................... 67

Automatic Address Recognition ......................................................................... 68

Baud Rate Selection for UART for Mode 1 and 3 .............................................. 70

UART Registers ................................................................................................. 73

Interrupt System ................................................................................. 77

Overview ............................................................................................................ 77

Registers ............................................................................................................ 78

Interrupt Sources and Vector Addresses ............................................................ 85

Keyboard Interface ............................................................................. 86

Introduction......................................................................................................... 86

Description ......................................................................................................... 86

Registers ............................................................................................................ 87

Programmable LED ............................................................................. 90

Serial Peripheral Interface (SPI) ........................................................ 91

AT89C5131A-RDTIM Datenblatt(PDF) 183 Page - ATMEL Corporation