
W78ERD2/W78ERD2A Data Sheet
8-BIT MICROCONTROLLER
Publication Release Date: February 14, 2007
- 1 -
Revision A10
Table of Contents-
1.
GENERAL DESCRIPTION ......................................................................................................... 3
2.
FEATURES................................................................................................................................. 3
3.
PIN CONFIGURATIONS ............................................................................................................ 4
4.
PIN DESCRIPTION..................................................................................................................... 5
5.
FUNCTIONAL DESCRIPTION ................................................................................................... 6
5.1
RAM................................................................................................................................ 6
5.2
Timers/Counters ............................................................................................................. 6
5.3
Clock............................................................................................................................... 7
5.4
Power Management........................................................................................................ 7
5.5
Reduce EMI Emission .................................................................................................... 7
5.6
Reset............................................................................................................................... 7
6.
SPECIAL FUNCTION REGISTER.............................................................................................. 8
7.
PORT 4 AND BASE ADDRESS REGISTERS ......................................................................... 30
8.
INTERRUPTS........................................................................................................................... 32
8.1
External Interrupts 2 and 3 ........................................................................................... 32
8.2
Interrupt Priority ............................................................................................................ 32
9.
PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 33
9.1
Timer 0 and Timer 1 ..................................................................................................... 33
9.2
Timer/Counter 2............................................................................................................ 35
10.
ENHANCED FULL DUPLEX SERIAL PORT............................................................................ 38
10.1
MODE 0........................................................................................................................ 38
10.2
MODE 1........................................................................................................................ 39
10.3
MODE 2........................................................................................................................ 40
10.4
MODE 3........................................................................................................................ 41
10.5
Framing Error Detection ............................................................................................... 42
10.6
Multi-Processor Communications................................................................................. 42
11.
PROGRAMMABLE COUNTER ARRAY (PCA)........................................................................ 44
11.1
PCA Capture Mode....................................................................................................... 47
11.2
16-bit Software Timer Comparator Mode..................................................................... 47
11.3
High Speed Output Mode............................................................................................. 48
11.4
Pulse Width Modulator Mode ....................................................................................... 49
11.5
Watchdog Timer ........................................................................................................... 49
12.
HARDWARE WATCHDOG TIMER (ONE-TIME ENABLED WITH RESET-OUT)................... 50