AK9813B Datasheet, PDF (12/24 Pages) Asahi Kasei Microsystems – 12ch 8bit D/A Converter with EEPROM

ASAHI KASEI
[AK9813B]
4. ALL CALL mode: The outputs of the all D/As are set by the data in the internal EEPROM.
DI
CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
CLK
EA0, EA1
CS/LD
DO
AO1 - 12
·The D/A outputs are set from AO1 to AO12 in order.
5. WRITE mode: The digital input data for D/A converter is written into the internal EEPROM.
DI
CLK
EA0, EA1
CS/LD
DO
AO1 - 12
CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
READY/BUSY
Output
No change
(NOTE)
* In case that AK9813B devices are connected in cascade, when a AK9813B device is under
programming cycle, the AK9813B device under programming cycle can not transfer the data to
the other AK9813B device and some AK9813B devices can not be operated by the common CS
signal at the same time.
* While programming cycle, the CS/LD pin should be "L".
* When the Ready/Busy signal from the DO pin is verified, the CS pin should be changed from "H"
to "L" and kept at "L". If the CS pin is kept at "H", the Ready/Busy signal does not output
correctly.
DAD04E-01
- 12 -
2002/11