PT8146 Datasheet, PDF (23/27 Pages) Princeton Technology Corp – 8-Bit 12-Ch I/O DAC

8-Bit 12-Ch I/O DAC
I/O expander (parallel -> serial conversion) operation
SI
D0
DF
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URL: http://www.princeton.com.tw
PT8146
CLK
1
16
1
2
16
CS
D_XX
Retrieved parallel data
SO
D0
DF
Parallel-to-serial -> Conversion result output
Data input is enabled at the falling edge of the /CS signal. 16-bit data (parallel → serial conversion
commands) is input and commands accepted at the rising edge of /CS. AT the falling edge of /CS, data
from the parallel input is loaded into bits D4 to DF of the shift register, and output from the SO pin timed
to the falling edge of the CLK signal.
PT8146 V1.1
- 23 -
February, 2006