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T89C51RD2-DDFC-L View Datasheet(PDF) - Atmel Corporation

Part Name
Description
Manufacturer
T89C51RD2-DDFC-L
Atmel
Atmel Corporation Atmel
T89C51RD2-DDFC-L Datasheet PDF : 86 Pages
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T89C51RD2
This table shows the state of ports during idle and power-down modes.
Mode
Idle
Idle
Power Down
Power Down
Program
Memory
Internal
External
Internal
External
ALE
1
1
0
0
PSEN
1
1
0
0
PORT0
Port Data*
Floating
Port Dat*
Floating
PORT1
Port Data
Port Data
Port Data
Port Data
* Port 0 can force a 0 level. A "one" will leave port floating.
PORT2
Port Data
Address
Port Data
Port Data
PORT3
Port Data
Port Data
Port Data
Port Data
42
Rev. F - 15 February, 2001
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