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Chapter 17 I
Note
17.1 Features
17.2 I
2
C Bus (IIC)
This microcontroller has one instance of this I
Throughout this chapter, the individual instances of this I
identified by "n" (n = 0).
The I²C provides a synchronous serial interface with the following features:
• Supports Master and Slave mode
• 8-bit data transfer
• Transfer speed
– up to 100 kbit/s (Standard Mode)
– up to 400 kbit/s (Fast Mode)
• Two wire interface
– SCLn: serial clock
– SDAn: serial data
• Noise filter on SCLn and SDAn input
2
C Pin Configuration
2
The I
C function requires to define the pins SCL0n and SDA0n as input and
open drain output pins simultaneously. In the following, the pin configuration
registers are listed to be set up properly for I
• PMC9.PMC914, PMC9.PMC915 = 1: alternative mode
• PFCE9.PFCE914 = PFCE9.PFCE915 = 1, together with
PFC9.PFC914 = PFC9.PFC915 = 0: select alternative function 3
• PF9.PFC914 = PF9.PFC915 = 1: open drain output
User's Manual U18743EE1V2UM00
2
C Bus interface.
2
C Bus interface
2
C:
457
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