UPD16676P データシートの表示（PDF） - NEC => Renesas Technology

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UPD16676P

1/16, 1/32 DUTY LCD CONTROLLER/DRIVER

NEC => Renesas Technology 

µPD16676

6. COMMANDS

Command

/RD /WR A0 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Function

1 Display ON/OFF

1 0 0 1 0 1 0 1 1 1 0/1 ON/OFF of the whole display is

performed independent of the

display RAM’s data or internal

state.

1: ON, 0: OFF (Power save at

static drive ON)Note

2 Display start line

100110

Display start address

Determines the RAM line

(0 to 31)

displayed on the uppermost line

(COM0) of the display.

3 Page address set 1 0 0 1 0 1 1 1 0 Pages Sets display RAM pages in the

(0 to 3) page address register.

4 Column(segment) 1 0 0 0

Column addresses

Sets display RAM’s column

address set

(0 to 79)

address in the column address

register.

5 Status read

0 1 0 B A O R 0 0 0 0 Reads status

UDNE

BUSY

SC / S

1: During internal operation

Y

OE

0: READY status

FT

ADC

F

1: Clockwise output(Normal

rotation)

0: Counterclockwise output

(Reverse)

ON/OFF

1: Display OFF, 0: Display ON

RESET

1: Being reset, 0: Normal

6 Display data write 1 0 1

Write Data

Displays the Accesses the

data bus data display RAM of

and writes it a pre-specified

onto the

address. After

display RAM. access, the

7 Display data read 0 1 1

Read data

Reads the data column

in the display address is

RAM onto the incremented.

data bus.

8 ADC select

1 0 0 1 0 1 0 0 0 0 0/1 This command is used to

reverse the correspondence

relationship between display

RAM’s column addresses and

segment driver outputs.

0: Clockwise output (Normal

rotation)

1: Counterclockwise output

(Reverse)

9 Static drive

1 0 0 1 0 1 0 0 1 0 0/1 Selects between the normal

ON/OFF

display operation and the static

all-lamp-driven display.

1: Static drive (Power save)Note

0: Normal display operation

10 Duty select

1 0 0 1 0 1 0 1 0 0 0/1 Selects between two different

liquid-crystal cell driving duties.

1: 1/32 duty

0: 1/16 duty

11 Read modify write 1 0 0 1 1 1 0 0 0 0 0 Increments the column address

counter only when writing the

display data; but not when

reading it.

12 END

1 0 0 1 1 1 0 1 1 1 0 Cancels read modify write mode

13 Reset

1 0 0 1 1 1 0 0 0 1 0 Sets the display start line

register to the first line.

Sets the column address

counter and the page address

register to 0.

Note If the static drive is turned ON in the display OFF state, the machine is placed in the power save state.

Data Sheet S10561EJ5V0DS00

7

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