UPD16680 datasheet(26/44 Pages) NEC

Part #	UPD16680

Description	1/53, 1/40 DUTY, LCD CONTROLLER/DRIVER WITH BUILT-IN RAM

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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26 / 44 page

Data Sheet S12694EJ2V0DS00

µµµµPD16680

9.2.4 D/A converter setting

The internal D/A converter is set. D/A converter output voltage is controlled from 1/2VDD to VDD.

MSB

LSB

MSB

LSB

b3 b2 b1 b0

Extend Choices

D/A Converter output voltage

00H(MIN.) to 3FH(MAX.)

Caution After resetting, it is set to 20H.

9.2.5 Duty setting

The duty is set.

MSB

LSB

Choices

000 : 1/53 duty

001 : 1/40 duty

b2 b1 b0

Note

Note If the duty cycle is 1/40, leave open from COM39 to COM51.

9.2.6 Blink setting

The blinks of the pictograph of the address whose blink data is “1” are controlled.

MSB

LSB

Choices

000 : Blink halt

001 : Blink start (Blink frequency = fOSC/32768)

010 : Blink start (Blink frequency = fBRI

/2)

b2 b1 b0

Note

Note This refers to the frequency of the external clock which is input from the OSCBR1 pin.

UPD16680 Datasheet(PDF) 26 Page - NEC