W78E52C/W78E052C Data Sheet
8-BIT MICROCONTROLLER
Publication Release Date: November 6, 2006
- 1 - Revision A4
Table of Contents-
1. GENERAL DESCRIPTION......................................................................................................... 2
2. FEATURES................................................................................................................................. 2
3. PIN CONFIGURATIONS ............................................................................................................ 3
4. PIN DESCRIPTION..................................................................................................................... 4
5. FUNCTIONAL DESCRIPTION ................................................................................................... 5
5.1 Timers 0, 1, and 2........................................................................................................... 5
5.2 New Defined Peripheral.................................................................................................. 5
5.3 Watchdog Timer ............................................................................................................. 7
5.4 Clock...............................................................................................................................9
5.5 Power Management........................................................................................................ 9
5.6 Reset............................................................................................................................... 9
6. SECURITY BITS....................................................................................................................... 10
6.1 Lock Bit......................................................................................................................... 10
6.2 MOVC Inhibit................................................................................................................. 10
6.3 Encryption..................................................................................................................... 10
7. ELECTRICAL CHARACTERISTICS......................................................................................... 11
7.1 Absolute Maximum Ratings.......................................................................................... 11
7.2 D.C. Characteristics...................................................................................................... 11
7.3 A.C. Characteristics...................................................................................................... 13
8. TIMING WAVEFORMS............................................................................................................. 16
8.1 Program Fetch Cycle.................................................................................................... 16
8.2 Data Read Cycle........................................................................................................... 16
8.3 Data Write Cycle........................................................................................................... 17
8.4 Port Access Cycle......................................................................................................... 17
9. TYPICAL APPLICATION CIRCUITS........................................................................................ 18
9.1 Expanded External Program Memory and Crystal....................................................... 18
9.2 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
11. REVISION HISTORY................................................................................................................ 22