AR0833 Datasheet, PDF (15/64 Pages) ON Semiconductor – 8 Mp CMOS Digital Image Sensor

AR0833: 1/3.2-Inch 8 Mp CMOS Digital Image Sensor
Power Down Sequence
Hard Standby and Hard Reset
The hard standby state is reached by the assertion of the XSHUTDOWN pad (hard reset).
Register values are not retained by this action, and will be returned to their default
values once hard reset is completed. The minimum power consumption is achieved by
the hard standby state. The details of the sequence are described below and shown in
Figure 7.
1. Disable streaming if output is active by setting mode_select 0x301A[2] = 0.
2. The soft standby state is reached after the current row or frame, depending on config-
uration, has ended.
3. Assert XSHUTDOWN (active LOW) to reset the sensor.
4. The sensor remains in hard standby state if XSHUTDOWN remains in the logic “0”
state.
Figure 7: Hard Standby and Hard Reset
EXTCLK
mode_select
R0x0100
Logic “1”
next row/frame
Logic “0”
XSHUTDOWN
Streaming
Soft Standby
Hard Standby Hard Reset
AR0833_DS Rev. H Pub. 4/15 EN
15
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