Operation Manual
6
I2C Protocol Information
This device has a 2-wire, I2C-compatible serial interface (refer to I2C-Bus Specication, Version 2.1, January 2000, available from Philips Semiconductor). It
can be connected to an I2C bus as a slave device, under the control of an I2C master device. It supports standard 400 kHz data transfer mode. Support is not
provided for 10-bit addressing.
The Sensor module has a 7-bit slave address with a default value of 0x62 in hexadecimal notation. The effective 8 bit I2C address is: 0xC4 write, 0xC5 read. The
device will not presently respond to a general call.
Notes:
• This device does not work with repeated START conditions. It must rst receive a STOP condition before a new START condition.
• The ACK and NACK items are responses from the master device to the slave device.
• The last NACK in the read is technically optional, but the formal I2C protocol states that the master shall not acknowledge the last byte.