T89C5115-RATIM datasheet(109/113 Pages) ATMEL

109 / 113 page

Table of Contents

Features ................................................................................................. 1

Description ............................................................................................ 2

Block Diagram ....................................................................................... 2

Pin Configurations ................................................................................ 3

Pin Description...................................................................................... 5

I/O Configurations ................................................................................................. 7

Port Structure ....................................................................................................... 7

Read-Modify-Write Instructions ............................................................................ 8

Quasi Bi-directional Port Operation ...................................................................... 8

SFR Mapping ....................................................................................... 10

Clock .................................................................................................... 14

Description ......................................................................................................... 14

Register .............................................................................................................. 17

Power Management ............................................................................ 18

Reset Pin .............................................................................................. 18

At Power-up (cold reset)..................................................................................... 18

During a Normal Operation (Warm Reset) ......................................................... 19

Watchdog Reset................................................................................................. 19

Reset Recommendation to Prevent Flash Corruption ......................................... 20

Idle Mode............................................................................................................ 20

Power-down Mode ............................................................................................. 20

Registers ............................................................................................................. 23

Data Memory ....................................................................................... 24

Internal Space .................................................................................................... 24

Dual Data Pointer ............................................................................................... 26

Registers ............................................................................................................ 27

EEPROM Data Memory ....................................................................... 29

Write Data in the Column Latches...................................................................... 29

Programming ...................................................................................................... 29

Read Data .......................................................................................................... 29

Examples............................................................................................................ 30

Registers ............................................................................................................ 31

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