W78IRD2 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
RAM ................................................................................................................................6
Timers/Counters..............................................................................................................6
Clock ...............................................................................................................................7
Power Management ........................................................................................................7
Reduce EMI Emission.....................................................................................................7
Reset...............................................................................................................................7
6.
7.
8.
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
9.
PROGRAMMABLE TIMERS/COUNTERS................................................................................33
9.1
9.2
Timer 0 and Timer 1......................................................................................................33
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
PROGRAMMABLE COUNTER ARRAY (PCA).........................................................................44
11.1 PCA Capture Mode .......................................................................................................47
11.2 16-bit Software Timer Comparator Mode......................................................................48
11.3 High Speed Output Mode..............................................................................................48
11.4 Pulse Width Modulator Mode........................................................................................49
11.5 Watchdog Timer............................................................................................................50
HARDWARE WATCHDOG TIMER (ONE-TIME ENABLED WITH RESET-OUT) ...................51
DUAL DPTR ..............................................................................................................................51
11.
12.
13.
14.
TIMED-ACCESS PROTECTION...............................................................................................52
Publication Release Date: October 2, 2006
- 1 -
Revision A7
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