AT89C51CC03C-RLTIM 查看數據表（PDF） - Atmel Corporation

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AT89C51CC03C-RLTIM

Enhanced 8-bit MCU with CAN Controller and Flash Memory

Atmel Corporation 

Table 29. PCON Register

PCON (S:87h)

Power Control Register

7

6

5

SMOD1 SMOD0

–

4

3

2

1

0

POF

GF1

GF0

PD

IDL

Bit

Bit

Number Mnemonic Description

7

SMOD1

Serial port Mode bit 1

Set to select double baud rate in mode 1, 2 or 3.

Serial port Mode bit 0

6

SMOD0 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.

Power-Off Flag

4

POF

Clear to recognize next reset type.

Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set

by software.

General-purpose Flag

3

GF1 Cleared by user for general-purpose usage.

Set by user for general-purpose usage.

General-purpose Flag

2

GF0 Cleared by user for general-purpose usage.

Set by user for general-purpose usage.

Power-Down mode bit

1

PD Cleared by hardware when reset occurs.

Set to enter power-down mode.

Idle mode bit

0

IDL Clear by hardware when interrupt or reset occurs.

Set to enter idle mode.

Reset Value = 00X1 0000b

Not bit addressable

68 AT89C51CC03

4182K–CAN–05/06

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