ZHCSFH3A September 2016 – February 2023 TCA6408A-Q1
PRODUCTION DATA
The RESET input can be asserted to initialize the system while keeping the VCCP at its operating level. A reset can be accomplished by holding the RESET pin low for a minimum of tW. The TCA6408A-Q1 registers and I2C/SMBus state machine are changed to their default state when RESET is low (0). When RESET is high (1), the I/O levels at the P-port can be changed externally or through the controller. This input requires a pull-up resistor to VCCI, if no active connection is used. It is not recommended to assert the RESET pin during communication with the TCA6408A-Q1. Assertion of RESET during communication can result in data corruption.