ZHCSNJ5E October 2005 – March 2021 PCA9545A
PRODUCTION DATA
When power is applied to VCC, an internal power-on reset holds the PCA9545A in a reset condition until VCC has reached VPORR. At this point, the reset condition is released and the PCA9545A 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 at least VPORF to reset the device.