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