EM78862C 查看數據表（PDF） - ELAN Microelectronics

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EM78862C

8-Bit Microcontroller

ELAN Microelectronics 

EM78862C

8-Bit RISC Type Microprocessor

6.1.4 R3 (Status Register)

Bit 7

PAGE

Bit 6

Bit 5

Bit 4

IOCP1S IOCPAGE

T

Bit 3

P

Bit 2

Z

Bit 1

DC

Bit 0

C

Bit 0 (C): Carry flag

Bit 1 (DC): Auxiliary carry flag

Bit 2 (Z): Zero flag

Bit 3 (P): Power down bit.

Set to 1 during power on or by "WDTC" command and reset to 0 by "SLEP"

command.

Bit 4 (T): Time-out bit.

Set to 1 by the "SLEP" and "WDTC" command, or during power up. Reset

to 0 by WDT timeout.

Event

T

WDT wake-up from sleep mode

0

WDT time out (not sleep mode)

0

RESET wake up from sleep

1

Power up

1

Low pulse on RESET pin

X

P

Remark

0

1

0

1

X

X =Don't care

Bit 5 (IOCPAGE): Change IOC5 ~ IOCE to another page,

0/1 → Page0/Page1 or 2 (determined by R3 Bit 6)

Bit 6 (IOCP1S): Change IOC PAGE1 and PAGE2 to another option register

0/1 → page1/page2

(Refer to Fig. 3, Data Memory Configuration for the control register Configuration

details.)

Bit 6 (IOCP1S)

X

0

1

Bit 5 (IOCPAGE)

0

1

1

Page Select

PAGE 0

PAGE 1

PAGE 2

Remark

X =Don't care

Bit 7 (PAGE):

Change RA ~ RE to another page

0/1 → page0/page1

(Refer to Fig. 3, Data Memory Configuration for the control register Configuration

details.)

8•

Product Specification (V2.1) 07.13.2005

(This specification is subject to change without further notice)

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