MSM9201-01GS-BK Просмотр технического описания (PDF) - Oki Electric Industry

Номер в каталоге

Компоненты Описание

производитель

MSM9201-01GS-BK

Fluorescent Display Tube Controller Driver

Oki Electric Industry 

¡ Semiconductor

PEDL9201-03

MSM9201-01

3. ADRAM data write

(specifies address of ADRAM and writes symbol data)

ADRAM (Additional Data RAM) has 4-bit addresses to store symbol data.

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

(The DRAM can store 4 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]

1st byte

(1st)

2nd byte

(2nd)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

X0 X1 X2 X3 X4 1 1 0

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

C0 C1 C2 C3 * * * *

: selects ADRAM data write mode and specifies ADRAM

address.

(Ex: specifies ADRAM address 00H)

: specifies symbol data.

(written into ADRAM address 00H)

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

The addresses of ADRAM are automatically incremented. Specification of ADRAM addresses

is therefore unnecessary.

2nd byte

(3rd)

2nd byte

(4th)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

C0 C1 C2 C3 * * * *

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

C0 C1 C2 C3 * * * *

: specifies symbol data.

(written into ADRAM address 01H)

: specifies symbol data.

(written into ADRAM address 02H)

2nd byte

(17th)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

C0 C1 C2 C3 * * * *

: specifies symbol data.

(written into ADRAM address 17FH)

Setting of symbol data for up to 24 digits is now complete.

To further specify symbol data continuously from DCRAM address 00H, dummy symbol data

must be specified for ADRAM addresses 18H to 1FH (so that the ADRAM address will be

incremented automatically and will be reset to 00H).

2nd byte

(18th)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

C0 C1 C2 C3 * * * *

: specifies dummy symbol data.

(not written into ADRAM address)

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

2nd byte

(65th)

C0 C1 C2 C3 * * * *

LSB

MSB

B0 B1 B2 B3 B4 B5 B6 B7

: specifies dummy symbol data.

(not written into ADRAM address)

2nd byte C0 C1 C2 C3 C4 C5 C6 C7 : specifies symbol data.

(66th)

(rewritten into ADRAM address 00H.)

X0 (LSB) to X4 (MSB): ADRAM addresses (5 bits: 24 characters)

C0 (LSB) to C3 (MSB): Symbol data (4 bits: 4-symbol data per digit)

24/35

Share Link: