AR0134CSSC00SUEAH-GEVB datasheet(33/41 Pages) ONSEMI

33 / 41 page

AR0134_DS Rev. G Pub. 6/15 EN

©Semiconductor Components Industries, LLC,2015.

AR0134: 1/3-Inch 1.2 Mp CMOS Digital Image Sensor

Power-On Reset and Standby Timing

3. It is critical that VDD_PLL is not powered up after the other power supplies. It must be powered

before or at least at the same time as the others. If the case happens that VDD_PLL is powered after

other supplies then the sensor may have functionality issues and will experience high current draw

on this supply.

Power-Down Sequence

The recommended power-down sequence for the AR0134 is shown in Figure 20. 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.

4. Turn off VDD.

5. Turn off VDD_IO

6. Turn off VAA/VAA_PIX.

7. Turn off VDD_PLL.

Figure 20:

Power Down

Table 19:

Power-Down Sequence

Definition

Symbol

Minimum

Typical

Maximum

Unit

VDD_SLVS to VDD

–

S

VDD to VDD_IO

–

S

VDD_IO to VAA/VAA_PIX

–

S

VAA/VAA_PIX to VDD_PLL

–

S

PwrDn until Next PwrUp Time

100

–

V DD_IO (1.8/2.8)

t 0

EXTCLK

VDD_SLVS (0.4)

VDD (1.8)

VAA_PIX

VAA (2.8)

VDD_PLL (2.8)

Power Down until next Power up cycle

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