W78E51B_05 Datasheet, PDF (1/25 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E51B Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. PIN CONFIGURATIONS ............................................................................................................ 4
4. PIN DESCRIPTION..................................................................................................................... 5
5. BLOCK DIAGRAM ...................................................................................................................... 6
6. FUNCTIONAL DESCRIPTION ................................................................................................... 7
6.1 New Defined Peripheral.................................................................................................. 7
6.2 Reduce EMI Emission .................................................................................................... 8
6.3 Watchdog Timer ............................................................................................................. 9
6.4 Clock ............................................................................................................................. 10
6.5 Power Management...................................................................................................... 10
6.6 Reset............................................................................................................................. 11
6.7 On-Chip ROM Characteristics ...................................................................................... 11
6.7.1 Read Operation ..............................................................................................................11
6.7.2 Output Disable Condition................................................................................................11
6.7.3 Program Operation .........................................................................................................11
6.7.4 Program Verify Operation ...............................................................................................11
6.7.5 Erase Operation .............................................................................................................11
6.7.6 Erase Verify Operation ...................................................................................................11
6.7.7 Program/Erase Inhibit Operation ....................................................................................12
7. SECURITY BITS ....................................................................................................................... 12
7.1 Lock Bit ......................................................................................................................... 13
7.2 MOVC Inhibit................................................................................................................. 13
7.3 Encryption ..................................................................................................................... 13
8. ELECREICAL CHARACTERISTICS......................................................................................... 14
8.1 Absolute Maximum Ratings .......................................................................................... 14
8.2 D.C. Characteristics...................................................................................................... 14
8.3 A.C. Characteristics ...................................................................................................... 15
8.3.1 Clock Input Waveform ....................................................................................................16
8.3.2 Program Fetch Cycle......................................................................................................16
8.3.3 Data Read Cycle ............................................................................................................16
8.3.4 Data Write Cycle.............................................................................................................17
8.3.5 Port Access Cycle ..........................................................................................................17
8.3.6 Program Operation .........................................................................................................17
Publication Release Date: Sep. 6, 2005
-1-
Revision A7