AK9813B View Datasheet(PDF) - Asahi Kasei Microdevices

Part Name

Description

Manufacturer

AK9813B

12ch 8bit D/A Converter with EEPROM

Asahi Kasei Microdevices 

ASAHI KASEI

[AK9813B]

Instruction Set

The AK9813B can be controlled for the following mode. The following mode is common to the

LD I/F and the CS IF. When LD I/F is selected, "A1" and "A0" are set by the external pins (EA0 pin

and EA1 pin).

①DAC mode (External DI pin -> D/A converter)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

X X 0 0 D/A CHANNEL

Digital Data for D/A

D/A output

②CALL mode (Internal EEPROM -> D/A converter)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

ADDRESS 1 0

D/A CHANNEL

X X X X X X X X READ

・The output of D/A converter is set by the data in the internal EEPROM.

Function

③ALL CALL mode (Internal EEPROM -> D/A converter)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

ADDRESS 1 0 0 0 0 0 X X X X X X X X ALL CHANNEL READ

・The outputs of all D/A converters are set by the data in the internal EEPROM.

...Internal ECL function

④WRITE ENABLE mode (Internal EEPROM WRITE ENABLE)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

X X 1 1 0 0 0 0 X X X X X X X X WRITE ENABLE

・After WRITE ENABLE mode is executed, the programming to the internal EEPROM is enabled.

Upon power-up and after the execution of the ECL function, the AK9813B is in the programming

disable state.

⑤WRITE DISABLE mode (Internal EEPROM WRITE DISABLE)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

X X 1 1 1 1 1 1 X X X X X X X X WRITE DISABLE

・After WRITE DISABLE mode is executed, the programming to the internal EEPROM is disabled.

⑥WRITE mode (External DI pin -> Internal EEPROM)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

ADDRESS 0 1

D/A CHANNEL

Digital Data for D/A

WRITE

・The digital data for D/A (D0 to D7) is written into the specified address in the internal EEPROM.

The state of the internal EEPROM must be the programming enable state.

⑦READ mode (Internal EEPROM -> External DO pin)

［X： Don't Care］

A1 A0 CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Function

ADDRESS 1 1

D/A CHANNEL

X X X X X X X X EEPROM DATA output

・The DO pin outputs the data in the internal EEPROM synchronously with the falling edge of the

input pulse of the CLK pin.

DAD04E-01

-7-

2002/11

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