FEDL9207-02

OKI Semiconductor

ML9207-xx

13/35

FUNCTIONAL DESCRIPTION

Command List

LSB

1st byte

MSB

LSB

2nd byte

MSB

Command

B0

B1

B2

B3

B4

B5

B6

B7

B0

B1

B2

B3

B4

B5

B6

B7

1

DCRAM data write

X0

X1

X2

X3

X4

1

0

0

C0

C1

C2

C3

C4

C5

C6

C7

C0

C5

C10

C15

C20

C25

C30

*

C1

C6

C11

C16

C21

C26

C31

*

C2

C7

C12

C17

C22

C27

C32

*

C3

C8

C13

C18

C23

C28

C33

*

2

CGRAM data write

X0

X1

X2

X3

*

0

1

0

C4

C9

C14

C19

C24

C29

C34

*

3

ADRAM data write

X0

X1

X2

X3

X4

1

1

0

C0

C1

C2

C3

*

*

*

*

4

General output port

set

P1

P2

P3

P4

*

0

0

1

5

Display duty set

D0

D1

*

*

*

1

0

1

D2

D3

D4

D5

D6

D7

D8

D9

6

Number of digits

set

K0

K1

K2

K3

*

0

1

1

7

All lights ON/OFF

L

H

*

*

*

1

1

1

Test mode

When data is written to RAM (DCRAM, CGRAM, ADRAM) continuously, addresses are internally incremented

automatically. Therefore it is not necessary to specify the 1st byte to write RAM data for the 2nd and later bytes.

Note : The test mode is used for inspection before shipment.

This is not a user function.

*

: Don't care

Xn

: Address specification for each RAM

Cn : Character code specification for each RAM

Pn

: General output port status specification

Dn : Display duty specification

Kn

: Number of digits specification

H

: All lights ON instruction

L

: All lights OFF instruction

2nd byte

3rd byte

4th byte

5th byte

6th byte