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AT89C51AC3-RDTIM Datasheet(PDF) 33 Page - ATMEL Corporation

Part # AT89C51AC3-RDTIM
Description  Enhanced 8-bit Microcontroller with 64KB Flash Memory
PDF  140 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51AC3-RDTIM Datasheet(HTML) 33 Page - ATMEL Corporation

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AT89C51AC3
4383D–8051–02/08
Table 9. Pin Conditions in Special Operating Modes
Mode
Port 0
Port 1
Port 2
Port 3
Port 4
ALE
PSEN#
Reset
Floating
High
High
High
High
High
High
Idle
(internal
code)
Data
Data
Data
Data
Data
High
High
Idle
(external
code)
Floating
Data
Data
Data
Data
High
High
Power-
Down(inter
nal code)
Data
Data
Data
Data
Data
Low
Low
Power-
Down
(external
code)
Floating
Data
Data
Data
Data
Low
Low



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