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AT89C51ED2-RDTUM Datasheet(PDF) 83 Page - ATMEL Corporation

No. de pieza AT89C51ED2-RDTUM
Descripción Electrónicos  8-bit Flash Microcontroller
PDF  137 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51ED2-RDTUM Datasheet(HTML) 83 Page - ATMEL Corporation

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83
4235K–8051–05/08
AT89C51RD2/ED2
18.4
Registers
Table 18-2.
PCON Register
PCON (S87:h) Power configuration Register
Reset Value= XXXX 0000b
7
6
5
4
3
2
1
0
-
-
-
-
GF1
GF0
PD
IDL
Bit Number
Bit
Mnemonic
Description
7-4
-
Reserved
The value read from these bits is indeterminate. Do not set these bits.
3
GF1
General Purpose flag 1
One use is to indicate whether an interrupt occurred during normal operation or during
Idle mode.
2
GF0
General Purpose flag 0
One use is to indicate whether an interrupt occurred during normal operation or during
Idle mode.
1
PD
Power-Down Mode bit
Cleared by hardware when an interrupt or reset occurs.
Set to activate the Power-Down mode.
If IDL and PD are both set, PD takes precedence.
0
IDL
Idle Mode bit
Cleared by hardware when an interrupt or reset occurs.
Set to activate the Idle mode.
If IDL and PD are both set, PD takes precedence.



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