UPD16680 datasheet(28/44 Pages) NEC

28 / 44 page

Data Sheet S12694EJ2V0DS00

µµµµPD16680

9.3 Address register

Selects the address type and specifies the address.

MSB

LSB

b5 b4

MSB

LSB

b3 b2 b1 b0

MSB

LSB

b5 b4 b3 b2 b1 b0

Choice1

00 : Dot address

01 : Pictograph group address

10 : Blink data group address

X address

Dot display group address : 00H to 0CH

Pictograph group address : 00H to 0CH

Blink group address : 00H to 0CH

Y address

Dot display group address : 00H to 33H

Pictograph group address : 00H

Blink group address : 00H

Caution If unspecified addresses have been set, operation is not assured.

10. RESETTING

When reset (command reset, hardware (terminal) reset), the contents of each register are as follows.

b7 b6 b5 b4 b3 b2 b1 b0

Status

Display ON / OFF

000

010

LCD OFF (SEGn, COMn, PCOM = VSS)

Standby

Normal operation

Duty setting

1/53 duty

D/A converter setting

To set 20H

Blink setting

010

000

Blink halt

Data R/W mode

Data write, the address is incremented(+1) starting

from current address.

Test mode

Normal operation

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