W78E54C Datasheet, PDF (1/24 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E54C/W78E054C Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. PIN CONFIGURATIONS ............................................................................................................ 4
4. PIN DESCRIPTION..................................................................................................................... 5
5. FUNCTIONAL DESCRIPTION ................................................................................................... 6
5.1 Timers 0, 1, and 2 ........................................................................................................... 6
5.2 New Defined Peripheral.................................................................................................. 6
5.2.1 INT2 / INT3 ....................................................................................................................6
5.2.2 PORT4 .............................................................................................................................7
5.2.3 Reduce EMI Emission ......................................................................................................7
5.3 Power-off Flag ................................................................................................................ 8
5.4 Watchdog Timer ............................................................................................................. 8
5.5 Clock ............................................................................................................................. 10
5.6 Power Management...................................................................................................... 10
5.7 Reset............................................................................................................................. 10
6. SECURITY BITS ....................................................................................................................... 11
6.1 Lock Bit ......................................................................................................................... 11
6.2 MOVC Inhibit................................................................................................................. 12
6.3 Encryption ..................................................................................................................... 12
7. ELECTRICAL CHARACTERISTICS......................................................................................... 13
7.1 Absolute Maximum Ratings .......................................................................................... 13
7.2 D.C. Characteristics...................................................................................................... 13
7.3 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
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Revision A4