SBOS397I August 2007 – June 2024 TMP102
PRODUCTION DATA
For the two-wire bus to operate at frequencies above 400 kHz, the controller device must issue an HS-Mode controller code (0000 1xxx) as the first byte after a START condition to switch the bus to high-speed operation. The TMP102 device does not acknowledge this byte, but switches the input filters on SDA and SCL and the output filters on SDA to operate in HS-mode, allowing transfers of up to 2.85 MHz. After sending the HS-Mode controller code and NACK bit, user must send a repeated start before sending the target address. The bus continues to operate in HS-Mode until a STOP condition occurs on the bus. Upon receiving the STOP condition, the TMP102 device switches the input and output filters back to fast-mode operation.