SST89C54-33-C-PJ View Datasheet(PDF) - Silicon Storage Technology

Part Name

Description

View to exact match

SST89C54-33-C-PJ

FlashFlex51 MCU

Silicon Storage Technology 

TABLE OF CONTENTS

FlashFlex51 MCU

SST89C54 / SST89C58

Preliminary Specifications

PRODUCT FEATURES ......................................................................................................................................... 1

PRODUCT DESCRIPTION .................................................................................................................................... 1

FUNCTIONAL BLOCKS ......................................................................................................................................... 4

Functional Block Diagram ............................................................................................................................... 4

PIN ASSIGNMENTS .............................................................................................................................................. 5

Pin Descriptions .............................................................................................................................................. 6

MEMORY ORGANIZATION ................................................................................................................................... 8

Program Memory ............................................................................................................................................ 8

Memory Re-Mapping ..................................................................................................................................... 10

Activation and Deactivation of Memory Re-Mapping ............................................................................... 11

Data Memory ................................................................................................................................................ 13

Special Function Registers (SFR) ................................................................................................................. 13

CPU Related SFRs .................................................................................................................................. 13

Flash Memory Programming SFRs .......................................................................................................... 14

Watchdog Timer SFRs ............................................................................................................................ 17

Timer/Counters SFRs .............................................................................................................................. 18

Interface SFRs ......................................................................................................................................... 18

FLASH MEMORY PROGRAMMING .................................................................................................................... 18

External Host Programming Mode ................................................................................................................ 18

Product Identification ............................................................................................................................... 20

External Host Mode Commands .............................................................................................................. 20

External Host Mode Clock Source ........................................................................................................... 21

Arming Command .................................................................................................................................... 21

Programming a SST89C54/58 ................................................................................................................. 21

Flash Operation Status Detection (Ext. Host Handshake) ....................................................................... 22

In-Application Programming Mode ................................................................................................................ 26

In-Application Programming Mode Clock Source ..................................................................................... 26

IAP Enable Bit ......................................................................................................................................... 26

In-Application Programming Mode Commands ........................................................................................ 26

Polling ...................................................................................................................................................... 29

Interrupt Temination ................................................................................................................................. 30

TIMERS/COUNTERS ........................................................................................................................................... 31

© 2000 Silicon Storage Technology, Inc.

2

344-2 8/00

Share Link: