XGS datasheet(20/53 Pages) ONSEMI

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XGS Family

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POWER−DOWN SEQUENCE

The recommended Power−Down sequence for the

XGS sensor is shown in Figure 13. The available power

supplies must have the separation specified below.

1. Disable CAPTURE if output is active by disabling

the sequencer (general_config0_reg[0] = 0).

2. Issue a sensor STANDBY request

(reset_register_reg[2] = 0). By default, the

transition to STANDBY state happens either after

completion of current row (or frame) readout or

instantly (configurable).

3. In STANDBY mode, activate reset by pulling

down the RESET_N line for at least 30

EXTCLKs.

4. EXTCLK can be stopped 0.5 ms after RESET_N.

5. Turn off power supplies one by one. Wait at least

until the supplies are stable before turning off the

next supply. (reverse order of Power−Up

Sequence).

Figure 13. Power−Down Sequence

EXTCLK (32.4 MHz)

Table 8. POWER−DOWN SEQUENCE

Symbol

Definition

Min

Typ

Max

Unit

Hard Reset

EXTCLK

cycles

Reset to Disable EXTCLK

0.5

VAA_RD / VAA_PIX_BST / VAA_PIX to VAA

0 (Note 6)

VDD_SLVS to VAA_RD / VAA_PIX_BST / VAA_PIX

0 (Note 6)

VAA_RD / VAA_PIX_BST / VAA_PIX to VAA

0 (Note 6)

VAA to VDD

0 (Note 6)

VDD to VDD_PLL

0 (Note 6)

VDD_PLL to VDD_IO

0 (Note 6)

6. The minimum time does not include the settling time of the power supply.

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