AR0130 Datasheet, PDF (50/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

AR0130: 1/3-Inch CMOS Digital Image Sensor
Power-On Reset and Standby Timing
Power-Down Sequence
The recommended power-down sequence for the AR0130 is shown in Figure 34. The
available power supplies (VDD_IO, VDD, VDD_SLVS, VDD_PLL, VAA, VAA_PIX) must have
the separation specified below.
1. Disable streaming if output is active by setting standby R0x301a[2] = 0
2. The soft standby state is reached after the current row or frame, depending on config-
uration, has ended.
3. Turn off VDD_SLVS, if used.
4. Turn off VDD_IO.
5. Turn off VDD.
6. Turn off VAA/VAA_PIX.
7. Turn off VDD_PLL.
Figure 34: Power Down
VDD_SLVS
V DD_IO (1.8/2.8)
VDD (1.8)
VAA_PIX
VAA (2.8)
VDD_PLL (2.8)
t0
t1
t2
t3
EXTCLK
t4
Power Down until next Power up cycle
Table 20:
Power-Down Sequence
Definition
VDD_SLVS to VDD_IO
VDD_IO to VDD
VDD to VAA/VAA_PIX
VAA/VAA_PIX to VDD_PLL
PwrDn until Next PwrUp Time
Symbol
t0
t1
t2
t3
t4
Minimum
0
0
0
0
100
Typical Maximum Unit
–
–
s
–
–
s
–
–
s
–
–
s
–
–
ms
Note:
t4 is required between power down and next power up time; all decoupling caps from regulators
must be completely discharged.
AR0130 DS Rev. L Pub. 6/15 EN
50
©Semiconductor Components Industries, LLC, 2015.