ZHCSNJ3I October 2005 – June 2022 PCA9546A
PRODUCTION DATA
When power is applied to VCC, an internal power-on reset holds the PCA9546A in a reset condition until VCC has reached VPOR. At this point, the reset condition is released, and the PCA9546A registers and I2C state machine are initialized to their default states, all zeroes, causing all the channels to be deselected. Thereafter, VCC must be lowered below VPOR to reset the device.