AK9844A Datasheet, PDF (6/17 Pages) Asahi Kasei Microsystems – 4Kbit EEPROM with 4ch 8bit D/A Converter

ASAHI KASEI
[AK9844A]
„ Instruction and Data Format
The instructions consist of op-code(8bits), address(8bits) and data(8bits x 2). The followings are
the instruction and data set at WRITE execution.
First
MSB
1 0 1 0 0 1 0 A8 A7 A6 A5 A4 A3 A2 A1 A0 D15 D14 D13 D12
Last
LSB
D2 D1 D0
Op-code
Address
A8 A7 A6 A5 A4 A3 A2 A1 A0
000000000
000000001
011111111
100000000
100000001
100000010
100000011
Memory Block
DAC Register Block
Function
Data for A00
Data for A01
Data for A02
Data for A03
Data
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 0 0 0 0 0XXXXXXXX
0 0 0 0 0 0 0 1XXXXXXXX
1 1 1 1 1 1 1 0XXXXXXXX
1 1 1 1 1 1 1 1XXXXXXXX
D/A Output Voltage
≒ ( VREF / 256 ) x1
≒ ( VREF / 256 ) x2
≒ ( VREF / 256 ) x255
≒
VREF
DAD05E-00
-6-
2005/03