W78ERD2 Datasheet, PDF (1/72 Pages) Winbond – 8-BIT MICROCONTROLLER

W78ERD2 Data Sheet
Table of Contents-
8-BIT MICROCONTROLLER
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. PIN CONFIGURATIONS............................................................................................................. 4
4. PIN DESCRIPTION..................................................................................................................... 5
5. BLOCK DIAGRAM ...................................................................................................................... 6
6. FUNCTIONAL DESCRIPTION.................................................................................................... 7
6.1 RAM ................................................................................................................................... 7
6.2 Timers 0, 1 and 2............................................................................................................... 7
6.3 Clock .................................................................................................................................. 8
6.4 Crystal Oscillator................................................................................................................ 8
6.5 External Clock.................................................................................................................... 8
6.6 Power Management........................................................................................................... 8
6.7 Reduce EMI Emission ....................................................................................................... 8
6.8 Reset.................................................................................................................................. 8
7. SPECIAL FUNCTION REGISTER .............................................................................................. 9
8. PORT 4 AND BASE ADDRESS REGISTERS.......................................................................... 33
9. INTERRUPT.............................................................................................................................. 35
10. ENHANCED FULL DUPLEX SERIAL PORT............................................................................ 36
10.1 MODE 0 ....................................................................................................................... 36
10.2 MODE 1 ....................................................................................................................... 37
10.3 MODE 2 ....................................................................................................................... 38
10.4 MODE 3 ....................................................................................................................... 39
10.5 Framing Error Detection............................................................................................... 41
10.6 Multiprocessor Communications.................................................................................. 41
11. PROGRAMMABLE COUNTER ARRAY (PCA) ........................................................................ 43
11.1 PCA Capture Mode ...................................................................................................... 46
11.2 16-bit Software Timer Comparator Mode .................................................................... 46
11.3 High Speed Output Mode ............................................................................................ 47
11.4 Pulse Width Modulator Mode....................................................................................... 47
11.5 Watchdog Timer........................................................................................................... 48
Publication Release Date: April 20, 2005
-1-
Revision A4