ZHCSK60G October 2005 – March 2021 PCA9544A
PRODUCTION DATA
When power is applied to VCC, an internal power-on reset holds the PCA9544A in a reset condition until VCC has reached VPOR. At this point, the reset condition is released, and the PCA9544A 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.