AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 183
AT83C5122_08
Manufacturer Part Number
AT83C5122_08
Description
C51 Microcontroller with USB and Smart Card Reader Interfaces
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT83C5122_08.pdf
(208 pages)
- Current page: 183 of 208
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Registers
4202F–SCR–07/2008
Table 113. Power Control Register - PCON (S:87h)
Reset Value = 00X1 0000b
Power-off flag reset value will be 1 only after a power on (cold reset). A warm reset
doesn’t affect the value of this bit.
Number
SMOD1
Bit
7
7
6
5
4
3
2
1
0
Mnemonic
SMOD0
SMOD1
SMOD0
POF
GF1
GF0
Bit
IDL
PD
6
-
Description
Serial Port Mode bit 1 for UART
Set to select double baud rate in mode 1,2 or 3
Serial Port Mode bit 0 for UART
Cleared to select SM0 bit in SCON register
Set to select FE bit in SCON register
Reserved
The value read from this bit is indeterminate. Do not change this bit.
Power-Off Flag (Only for ROM version parts)
Cleared to recognize next reset type
Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set
by software
Warning : in CRAM and FLASH versions, this bit is reserved.
General purpose Flag
Cleared by user for general-purpose usage
Set by user for general-purpose usage
General purpose Flag
Cleared by user for general-purpose usage
Set by user for general-purpose usage
Power-Down mode bit
Cleared by hardware when reset occurs
Set to enter power-down mode
Idle mode bit
Cleared by hardware when interrupt or reset occurs
Set to enter idle mode
5
-
AT83R5122, AT8xC5122/23
POF
4
GF1
3
GF0
2
PD
1
IDL
0
183
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