參數(shù)資料
型號: T89C51RC2-SLBCL
廠商: Atmel Corp.
英文描述: 8-bit Microcontroller with 16 Kbytes/ 32 Kbytes FLASH
中文描述: 8位微控制器,帶有16字節(jié)/ 32千字節(jié)閃存
文件頁數(shù): 60/170頁
文件大小: 1927K
代理商: T89C51RC2-SLBCL
60
A/T89C51CC01
4129L–CAN–08/05
Table 39.
PCON Register
PCON (S:87h)
Power Control Register
Reset Value = 00X1 0000b
Not bit addressable
7
6
5
4
3
2
1
0
SMOD1
SMOD0
POF
GF1
GF0
PD
IDL
Bit
Number
Bit
Mnemonic
Description
7
SMOD1
Serial port Mode bit 1
Set to select double baud rate in mode 1, 2 or 3.
6
SMOD0
Serial port Mode bit 0
Clear to select SM0 bit in SCON register.
Set to select FE bit in SCON register.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
POF
Power-Off Flag
Clear to recognize next reset type.
Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set
by software.
3
GF1
General-purpose Flag
Cleared by user for general-purpose usage.
Set by user for general-purpose usage.
2
GF0
General-purpose Flag
Cleared by user for general-purpose usage.
Set by user for general-purpose usage.
1
PD
Power-Down mode bit
Cleared by hardware when reset occurs.
Set to enter power-down mode.
0
IDL
Idle mode bit
Clear by hardware when interrupt or reset occurs.
Set to enter idle mode.
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