PT8146 Datasheet, PDF (22/27 Pages) Princeton Technology Corp – 8-Bit 12-Ch I/O DAC

8-Bit 12-Ch I/O DAC
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URL: http://www.princeton.com.tw
PT8146
DATA INPUT/OUPUT TIMING
PT8146 DATA INPUT/OUTPUT TIMING (SERIAL BUS FORMAT)
D/A Converter operation, and I/O expander (serial → parallel conversion) operation, and ESR writing
operation
SI
D0
D1
D2
DE
DF
CLK
1
2
3
15
16
CS
AO_X
D_XX
SO
Data input is enabled at the falling edge of the /CS signal. 16-bit data is input, and the shift register
command is executed at the rising edge of /CS.
In D/A converter operations, the analog output selected at the rising edge of /CS is the conversion
result. In serial → parallel conversion, the digital output selected at the rising edge of /CS is the
conversion result. In ESR write operation, ESR data is set and pin status determined at the rising edge
of /CS.
PT8146 V1.1
- 22 -
February, 2006