ML9209 データシートの表示（PDF） - LAPIS Semiconductor Co., Ltd.

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コンポーネント説明

メーカー

ML9209

Vacuum fluorescent display tube controller driver

LAPIS Semiconductor Co., Ltd. 

LAPIS Semiconductor

FEDL9209-01

ML9209-xx

3. “ADRAM data write” command

(Specifies the address of ADRAM and writes symbol data)

ADRAM (Additional Data RAM) has a 2-bit address to store symbol data.

Symbol data specified by ADRAM is directly output without CGROM and CGRAM.

(The ADRAM can store two types of symbol patterns for each digit.)

The terminal to which the contents of ADRAM are output can be used as a cursor.

[Command format]

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

1st byte X0 X1 X2 X3 1 1 0 0

(1st)

: Setup and DCRAM address in the write-in mode of

DCRAM data are specified.

LSB

MSB (Example: Specify ADRAM address 0H.)

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte C0 C1

(2nd)

*

*

*

*

*

*

: Specify symbol data.

(Example: Specify ADRAM address 0H.)

To specify symbol data continuously to the next address, specify only symbol data as follows.

Since the address of ADRAM is automatically incremented, address specification is unnecessary.

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte C0 C1

(3rd)

*

*

*

*

*

*

: Specify symbol data.

(It is written into ADRAM address 1H.)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte C0 C1

(4th)

*

*

*

*

*

*

: Specify symbol data.

(It is written into ADRAM address 2H.)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte C0 C1

(17th)

*

*

*

*

*

*

: Specify symbol data.

(It is written into ADRAM address FH.)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte C0 C1

(18th)

*

*

*

*

*

*

: Specify symbol data.

(It is rewritten into ADRAM address 0H.)

X0 (LSB) to X3 (MSB) : ADRAM address (4 bits: 16 characters worth)

C0 (LSB) to C1 (MSB) : Symbol data (2 bits: 2 symbols per digit)

* : Don’t care

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