
W78E54C/W78E054C Data Sheet
8-BIT MICROCONTROLLER
Publication Release Date: October 3, 2006
- 1 -
Revision A4
Table of Contents-
1.
GENERAL DESCRIPTION ......................................................................................................... 3
2.
FEATURES................................................................................................................................. 3
3.
PIN CONFIGURATIONS ............................................................................................................ 4
4.
PIN DESCRIPTION..................................................................................................................... 5
5.
FUNCTIONAL DESCRIPTION ................................................................................................... 6
5.1
5.2
Timers 0, 1, and 2........................................................................................................... 6
New Defined Peripheral.................................................................................................. 6
5.2.1
5.2.2
5.2.3
Power-off Flag ................................................................................................................ 8
Watchdog Timer ............................................................................................................. 8
Clock............................................................................................................................. 10
Power Management...................................................................................................... 10
Reset............................................................................................................................. 10
SECURITY BITS....................................................................................................................... 11
INT2
/
NT3
PORT4 .............................................................................................................................7
Reduce EMI Emission......................................................................................................7
I
....................................................................................................................6
5.3
5.4
5.5
5.6
5.7
6.
6.1
6.2
6.3
ELECTRICAL CHARACTERISTICS......................................................................................... 13
Lock Bit......................................................................................................................... 11
MOVC Inhibit................................................................................................................. 12
Encryption..................................................................................................................... 12
7.
7.1
7.2
7.3
Absolute Maximum Ratings.......................................................................................... 13
D.C. Characteristics...................................................................................................... 13
A.C. Characteristics...................................................................................................... 15
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
TIMING WAVEFORMS............................................................................................................. 18
Clock Input Waveform....................................................................................................15
Program Fetch Cycle......................................................................................................15
Data Read Cycle ............................................................................................................16
Data Write Cycle.............................................................................................................16
Port Access Cycle ..........................................................................................................16
Program Operation.........................................................................................................17
8.