
Preliminary W77E468
8 BIT MICROCONTROLLER
Publication Release Date: January 1999
Revision A1
- 1 -
Table of Contents--
GENERAL DESCRIPTION..............................................................................................................................2
FEATURES......................................................................................................................................................2
PIN CONFIGURATION....................................................................................................................................3
BLOCK DIAGRAM...........................................................................................................................................4
PIN DESCRIPTION..........................................................................................................................................5
FUNCTIONAL DESCRIPTION ........................................................................................................................6
PROGRAMMABLE TIMERS/COUNTERS....................................................................................................54
TIMED ACCESS PROTECTION...................................................................................................................71
ON-CHIP MTP ROM CHARACTERISTICS...................................................................................................72
ABSOLUTE MAXIMUM RATINGS................................................................................................................76
DC ELECTRICAL CHARACTERISTICS ......................................................................................................76
AC ELECTRICAL CHARACTERISTICS........................................................................................................78
EXTERNAL CLOCK CHARACTERISTICS...................................................................................................78
AC SPECIFICATION..................................................................................................................................78
MOVX CHARACTERISTICS USING STRECH MEMORY CYCLES........................................................79
TYPICAL APPLICATION CIRCUITS .............................................................................................................82
Using External ROM and RAM...................................................................................................................82
PACKAGE DIMENSIONS..............................................................................................................................83
100-pin QFP...............................................................................................................................................83