EM78F651NAMSSLASHNAMJ datasheet(14/58 Pages) EMC

14 / 58 page

EM78F651N

8-Bit Microcontroller

•

Product Specification (V1.1) 10.20.2006

(This specification is subject to change without further notice)

6.1.8 RA (Wake- up Control Register)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ICWE

Bit 7:

Not used. Set all “0”

Bit 6 (ICWE): Port 6 input status change wake-up enable bit

0 = Disable Port 6 input status change wake-up

1 = Enable Port 6 input status change wake-up

Bits 5~0: Not used. Set all to “0”.

6.1.9 RB (EEPROM Control Register)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

EEWE

EEDF

EEPC

Bit 7: Read control register

0 : Does not execute EEPROM read

1 : Read EEPROM content, (RD can be set by software, RD is cleared by

hardware after Read instruction is completed)

Bit 6

：Write control register

0 : Write cycle to the EEPROM is complete.

1 : Initiate a write cycle, (WR can be set by software, WR is cleared by

hardware after Write cycle is completed)

Bit 5

：EEPROM Write Enable bit.

0 : Prohibit write to the EEPROM

1 : Allows EEPROM write cycles

Bit 4

：EEPROM Detective Flag

0 : Write cycle is completed

1 : Write cycle is unfinished

Bits 3

：EEPROM power-down control bit

0 : Switch off the EEPROM

1 : EEPROM is operating

Bits 2 ~ 0: Not used, set to “0” at all time

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