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