W78C32C/W78C032C DATA SHEET
8-BIT MICROCONTROLLER
Table of Contents-
1.
2.
3.
4.
5.
GENERAL DESCRIPTION.......................................................................................................... 2
FEATURES ................................................................................................................................. 2
PIN CONFIGURATIONS............................................................................................................. 3
PIN DESCRIPTION..................................................................................................................... 4
FUNCTIONAL DESCRIPTION.................................................................................................... 6
5.1
5.2
TIMERS 0, 1, AND 2....................................................................................................... 6
CLOCK............................................................................................................................ 6
5.2.1 CRYSTAL OSCILLATOR .................................................................................................6
5.2.2 EXTERNAL CLOCK .........................................................................................................6
5.3
POWER MANAGEMENT ............................................................................................... 6
5.3.1 IDLE MODE......................................................................................................................6
5.3.2 POWER-DOWN MODE ...................................................................................................7
5.3.3 RESET .............................................................................................................................7
6.
ELECTRICAL CHARACTERISTICS........................................................................................... 8
6.1
6.2
6.3
ABSOLUTE MAXIMUM RATINGS ................................................................................. 8
D.C. CHARACTERISTICS.............................................................................................. 8
A.C. CHARACTERISTICS.............................................................................................. 9
6.3.1 CLOCK INPUT WAVEFORM ...........................................................................................9
6.3.2 PROGRAM FETCH CYCLE ...........................................................................................10
6.3.3 DATA READ CYCLE......................................................................................................10
6.3.4 DATA WRITE CYCLE ....................................................................................................11
6.3.5 PORT ACCESS CYCLE.................................................................................................11
7.
TIMING waveformS................................................................................................................... 12
7.1
7.2
7.3
7.4
PROGRAM FETCH CYCLE ......................................................................................... 12
DATA READ CYCLE..................................................................................................... 12
DATA WRITE CYCLE................................................................................................... 13
PORT ACCESS CYCLE ............................................................................................... 13
8.
9.
TYPICAL APPLICATION CIRCUIT........................................................................................... 14
8.1
8.2
USING EXTERNAL PROGRAM MEMORY AND CRYSTAL........................................ 14
EXPANDED EXTERNAL DATA MEMORY AND OSCILLATOR.................................. 15
PACKAGE DIMENSIONS ......................................................................................................... 16
9.1
9.2
9.3
40-PIN DIP.................................................................................................................... 16
44-PIN PLCC ................................................................................................................ 16
44-PIN QFP .................................................................................................................. 17
10.
REVISION HISTORY ................................................................................................................ 18
Publication Release Date: December 4, 2006
- 1 -
Revision A6
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