UPD16675AP datasheet(21/36 Pages) NEC

21 / 36 page

µµµµPD16675A

CPU ACCESS EXAMPLES

Examples of access procedure are shown below. In serial or 4-bit parallel interface mode, the Chip Address

8.1

Initialize and Data Write

Parameter

STB

Command/data

Description

b7 b6 b5 b4 b3 b2 b1 b0

Start

XXXXXX

(Power-on reset is released 200

µs after power

supply is started)

Chip Address

000000

Chip address = 000

Duty setting

011000

1/34 duty

XXXXXX

CAR

000000

Chip address = 000

D/A converter setting

010000

D/A converter output = 10000H

XXXXXX

CAR

000000

Chip address = 000

Address register 1

000000

Dot address, Y address = 00H

Address register 2

000000

X address = 00H

XXXXXX

CAR

000000

Chip address = 000

Data R/W mode

110001

Data write, the address is incremented starting from

the current one.

Dot display data 1

Dot display data 128











Data of Y address = 00H (128 bytes)

Dot display data 1

Dot display data 128











Data of Y address = 01H (128 bytes)

Dot display data 1

Dot display data 128











Data of Y address = 02H (128 bytes)

Dot display data 1

Dot display data 128











Data of Y address = 03H (128 bytes)

XXXXXX

CAR

000000

Chip address = 000

Address register 1

010000

Pictograph group address, Y address = 00H

Address register 2

000000

X address = 00H

XXXXXX

CAR

000000

Chip address = 000

Remark X = Don't Care, D = Data

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