EM78P5841NM Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78P5841NM

8-Bit Microcontrollers

ELAN Microelectronics 

EM78P5840N/41N/42N

8-Bit Microcontrollers

7.2.4 R3 (Status, Page Selection)

„ (Status Flag, Page Selection Bits)

Bit 7

RPAGE1

R/W-0

Bit 6

Bit 5

RPAGE0 IOCPAGE

R/W-0 R/W-0

Bit 4

T

R

Bit 3

P

R

Bit 2

Z

R/W

Bit 1

DC

R/W

Bit 0

C

R/W

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 a "WDTC" command and reset to “0” by a

"SLEP" command.

Bit 4 (T): Time-out bit

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

reset to 0 by WDT timeout.

Event

WDT wakes up from sleep mode

WDT times out (not in sleep mode)

/RESET wakes up from sleep

Power up

Low pulse on /RESET

T

P

Remarks

0

0

0

1

1

0

1

1

x

x

x = don't care

Bit 5 (IOCPAGE): Change IOC pages between Page 0 and Page 1

"0" : IOC Page 0

"1" : IOC Page 1

See Section 7.1.2 “IOC Page Register Configuration” for further details.

Bits 6~7 (RPAGE0 ~ RPAGE1): Change R pages between Page 0 ~ Page 3

(RPAGE1, RPAGE0)

(0, 0)

(0, 1)

(1, 0)

(1, 1)

R Page # Selected

R Page 0

R Page 1

R Page 2

R Page 3

Refer to Section 7.1.1 “R Page Register Configuration” for further details.

Product Specification (V1.0) 04.25.2006

•9

(This specification is subject to change without further notice)

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