AS3665 datasheet(13/78 Pages) AMSCO

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AS3665

Datasheet, Confidential - D e taile d D e scri pti on Device O pera t in g Mo de

Device Operating Mode

The operating mode is selected according to the following flowchart:

Figure 16. AS3665 operating mode selection

After power on reset, the AS3665 waits until EN=1 and SCL=1 or SDA=1

2and then initializes its internal registers and

program memory. Once standby mode is reached, the program and setup can be download to the AS3665 and by set-

ting chip_en=1 the program can be executed.

2. SCL and SDA is monitored to detect if the I

2C bus is powered. Therefore if EN is not used, it can be tied to

VBAT and the mode selection between shutdown and the other modes is performed by SCL and SDA.

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