SBOS473L March 2009 – July 2024 TMP112 , TMP112D
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
For the two-wire bus to operate at frequencies above 400 kHz, the controller device must issue a Hs-mode controller code (0000 1xxx) as the first byte after a START condition to switch the bus to high-speed operation. The TMP112 family does not acknowledge this byte, but switches the input filters on the SDA and SCL pins and the output filters on the SDA pin to operate in Hs-mode, thus allowing transfers at up to 2.85 MHz. After the Hs-mode controller code has been issued, the controller transmits a two-wire target address to initiate a data-transfer operation. The bus continues to operate in Hs-mode until a STOP condition occurs on the bus. Upon receiving the STOP condition, the TMP112 family switches the input and output filters back to fast-mode operation.