W78E54C/W78E054C 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
Timers 0, 1, and 2........................................................................................................... 6
New Defined Peripheral.................................................................................................. 6
5.2.1
INT2/ INT3 ....................................................................................................................6
5.2.2 PORT4 .............................................................................................................................7
5.2.3 Reduce EMI Emission ......................................................................................................7
5.3
5.4
5.5
5.6
5.7
Power-off Flag ................................................................................................................ 8
Watchdog Timer ............................................................................................................. 8
Clock............................................................................................................................. 10
Power Management...................................................................................................... 10
Reset............................................................................................................................. 10
6.
7.
SECURITY BITS....................................................................................................................... 11
6.1
6.2
6.3
Lock Bit ......................................................................................................................... 11
MOVC Inhibit................................................................................................................. 12
Encryption..................................................................................................................... 12
ELECTRICAL CHARACTERISTICS......................................................................................... 13
7.1
7.2
7.3
Absolute Maximum Ratings.......................................................................................... 13
D.C. Characteristics...................................................................................................... 13
A.C. Characteristics...................................................................................................... 15
7.3.1 Clock Input Waveform ....................................................................................................15
7.3.2 Program Fetch Cycle......................................................................................................15
7.3.3 Data Read Cycle ............................................................................................................16
7.3.4 Data Write Cycle.............................................................................................................16
7.3.5 Port Access Cycle ..........................................................................................................16
7.3.6 Program Operation.........................................................................................................17
8.
TIMING WAVEFORMS............................................................................................................. 18
Publication Release Date: October 3, 2006
- 1 -
Revision A4
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