VD5377 datasheet(52/88 Pages) STMICROELECTRONICS

52 / 88 page

Basic start-up information

VD5377

52/88

Doc ID 022952 Rev 2

Figure 22. Automatic mode to low power standby mode

Sensor in auto power mode with

“use standby pin” set.

Standby pin high - I2C unavailable

Set standby pin low

(I2C enabled)

Read register 0x05

Change bit 3 to 0 (host_config_done)

Write new value to register 0x05

Read register 0x05 until sensor goes

into software standby

that is, register 0x05[7:5] = 0x01

Write manual mode (bit[0] = 0) and

host_config_done (bit[3] = 1) to

Set standby pin high

Standby

Set standby pin low

Read register 0x05

Change bit 3 to 0 (host_config_done)

Write new value to register 0x05

Read register 0x05 until sensor goes

into software standby

that is, register 0x05[7:5] = 0x01

Write manual mode (bit[0] = 0) and

host_config_done (bit[3] = 1) to

Set standby pin high

Sensor could be in any of the

auto run/sleep modes

Set sensor in software standby mode

Wait until sensor goes into software

standby mode

Set sensor in manual run mode

Manual standby mode

(typical current = 15 uA)

Set sensor in software standby mode

Wait until sensor goes into software

standby mode

Set sensor in manual run mode

I2C disabled

Sensor in manual run mode

VD5377 数据表(PDF) 52 Page - STMicroelectronics

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