W78E52C/W78E052C 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 ................................................................................................... 5
5.1
5.2
5.3
5.4
5.5
5.6
Timers 0, 1, and 2........................................................................................................... 5
New Defined Peripheral.................................................................................................. 5
Watchdog Timer ............................................................................................................. 7
Clock............................................................................................................................... 9
Power Management........................................................................................................ 9
Reset............................................................................................................................... 9
6.
7.
8.
SECURITY BITS....................................................................................................................... 10
6.1
6.2
6.3
Lock Bit ......................................................................................................................... 10
MOVC Inhibit................................................................................................................. 10
Encryption..................................................................................................................... 10
ELECTRICAL CHARACTERISTICS......................................................................................... 11
7.1
7.2
7.3
Absolute Maximum Ratings.......................................................................................... 11
D.C. Characteristics...................................................................................................... 11
A.C. Characteristics...................................................................................................... 13
TIMING WAVEFORMS............................................................................................................. 16
8.1
8.2
8.3
8.4
Program Fetch Cycle.................................................................................................... 16
Data Read Cycle........................................................................................................... 16
Data Write Cycle........................................................................................................... 17
Port Access Cycle......................................................................................................... 17
9.
TYPICAL APPLICATION CIRCUITS ........................................................................................ 18
9.1
9.2
Expanded External Program Memory and Crystal....................................................... 18
Expanded External Data Memory and Oscillator ......................................................... 19
10.
PACKAGE DIMENSIONS......................................................................................................... 20
10.1 40-pin DIP..................................................................................................................... 20
10.2 44-pin PLCC ................................................................................................................. 20
10.3 44-pin PQFP................................................................................................................. 21
REVISION HISTORY................................................................................................................ 22
11.
Publication Release Date: November 6, 2006
- 1 -
Revision A4
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