W79E225A Datasheet, PDF (88/200 Pages) Winbond – 8-bit Microcontroller

Preliminary W79E225A/227A Data Sheet
MODE
PROGRAM
MEMORY
Idle
Internal
Idle
External
Power
Down
Internal
Power
Down
External
Note:
1. When PWDNH=0.
2. When PWDNH=1.
ALE PSEN PORT0 PORT1 PORT2 PORT3
1
1
Data
Data
Data
Data
1
1
Float
Data Address Data
0 ^[1]
0 ^[1]
1 ^[2]
1 ^[2]
Data
Data
Data
Data
0 ^[1]
0 ^[1]
1 ^[2]
1 ^[2]
Float
Data
Data
Data
Table 9-1: Status of external pins during Idle and Power Down
PORT4
Data
Data
Data
Data
PORT5
Data
Data
Data
Data
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Publication Release Date: December 14, 2007
Revision A2.0