w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 2

• Manufacturer Part Number: w78l812a
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

7.
8.
9.
10.
11.
12.
13.
6.6
6.7
6.8
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 18
DC CHARACTERISTICS.......................................................................................................... 19
AC CHARACTERISTICS .......................................................................................................... 21
9.1
9.2
9.3
9.4
9.5
9.6
TIMING WAVEFORMS ............................................................................................................. 24
10.1
10.2
10.3
10.4
10.5
TYPICAL APPLICATION CIRCUITS ........................................................................................ 27
11.1
11.2
PACKAGE DIMENSIONS ......................................................................................................... 29
12.1
12.2
12.3
12.4
REVISION HISTORY ................................................................................................................ 31
Erase Verify Operation ................................................................................................. 15
Program/Erase Inhibit Operation .................................................................................. 15
Security Bits .................................................................................................................. 16
6.8.1
6.8.2
6.8.3
Clock Input Waveform .................................................................................................. 21
Program Fetch Cycle .................................................................................................... 22
Data Read Cycle........................................................................................................... 22
Data Write Cycle ........................................................................................................... 22
Port Access Cycle......................................................................................................... 23
Program Operation ....................................................................................................... 23
Program Fetch Cycle .................................................................................................... 24
Data Read Cycle........................................................................................................... 24
Data Write Cycle ........................................................................................................... 25
Port Access Cycle......................................................................................................... 25
Program Operation ....................................................................................................... 26
Expanded External Program Memory and Crystal ....................................................... 27
Expanded External Data Memory and Oscillator ......................................................... 28
40-pin DIP ..................................................................................................................... 29
44-pin PLCC ................................................................................................................. 29
44-pin PQFP ................................................................................................................. 30
48-pin LQFP.................................................................................................................. 30
Lock Bit........................................................................................................................17
MOVC Inhibit ...............................................................................................................17
Encryption....................................................................................................................18
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W78LE812/W78L812A