T89C51CC02 Atmel, T89C51CC02 Datasheet - Page 50

• Manufacturer Part Number: T89C51CC02
• Description: 8-Bit MCU
• Manufacturer: Atmel

T89C51CC02
PCON (S:87h)
Power Control Register
Reset Value = 00X1 0000b
Not bit addressable
50
Bit Number Bit Mnemonic
SMOD1
7
7
6
5
4
3
2
1
0
SMOD0
SMOD1
SMOD0
POF
GF1
GF0
IDL
PD
6
-
Serial port Mode bit 1
Serial port Mode bit 0
Reserved
Power-Off Flag
General purpose Flag
General purpose Flag
Power-Down mode bit
Idle mode bit
Set to select double baud rate in mode 1, 2 or 3.
Clear to select SM0 bit in SCON register.
Set to select FE bit in SCON register.
The value read from this bit is indeterminate. Do not set this bit.
Clear to recognize next reset type.
Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set by software.
Cleared by user for general purpose usage.
Set by user for general purpose usage.
Cleared by user for general purpose usage.
Set by user for general purpose usage.
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Clear by hardware when interrupt or reset occurs.
Set to enter idle mode.
5
-
Figure 33. PCON Register
Preliminary
POF
4
GF1
3
Description
GF0
2
PD
Rev.A - May 17, 2001
1
IDL
0