ZHCSMR3A november 2020 – november 2020 DS90UB633A-Q1
PRODUCTION DATA
The I2C-compatible interface allows programming of the DS90UB633A-Q1, DS90UB662-Q1, or an external remote device (such as image sensor) through the bidirectional control. To communicate and synchronize with remote devices on the I2C bus through the bidirectional control channel/MCU, the chipset utilizes bus clock stretching (holding the SCL line low) during data transmission; where the I2C slave pulls the SCL line low on the 9th clock of every I2C transfer (before the ACK signal). The slave device does not control the clock and only stretches it until the remote peripheral has responded. The I2C master must support clock stretching to operate with the DS90UB633A/662 chipset.