AR0230CS datasheet(22/24 Pages) ONSEMI

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AR0230CS

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Power−Down Sequence

The recommended power−down sequence for the

AR0230CS is shown in Figure 12. 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 configuration, has

ended.

3. Turn off VDD_SLVS.

4. Turn off VDD.

5. Turn off VDD_IO.

6. Turn off VAA/VAA_PIX.

7. Turn off VDD_PLL.

Figure 12. Power Down

VDD_SLVS (0.4)

t 4

VDD(1.8)

VDD_IO(1.8/2.8)

VAA_PIX

VAA(2.8)

VDD_PLL (2.8)

EXTCLK

Power Down until next Power up cycle

Table 21.

POWER−DOWN SEQUENCE

Definition

Symbol

Minimum

Typical

Maximum

Unit

VDD_SLVS to VDD

−

VDD to VDD_IO

−

VDD_IO to VAA/VAA_PIX

−

VAA/VAA_PIX to VDD_PLL

−

Power Down until Next Power Up Time

100

−

t4 is required between power down and next power up

time; all decoupling caps from regulators must be

completely discharged.

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