Datasheet

MCP3202
DS21034F-page 16  1999-2011 Microchip Technology Inc.
FIGURE 5-2: Communication with MCP3202 using LSB first format.
Null
Bit
B11 B10
B9
B8 B7 B6 B5 B4 B3 B2 B1 B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11
CS
CLK
D
OUT
HI-Z
HI-Z
(MSB)
t
CONV
t
DATA
**
Power Down
t
SAMPLE
D
IN
t
CYC
t
CSH
* After completing the data transfer, if further clocks are applied with CS low, the A/D converter will output zeros
indefinitely.
** t
DATA
: During this time, the bias circuit and the comparator power down while the reference input becomes a
high-impedance node, leaving the CLK running to clock out LSB first data or zeroes.
t
SUCS
ODD/
SIGN
Start SGL/
DIFF
MSBF
Don’t Care
*