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Preliminary User’s Manual U17566EE1V2UM00
Chapter 18 I
2
C Bus (IIC)
The V850E/Dx3 microcontrollers have following instances of the I
2
C Bus
interface IIC:
Throughout this chapter, the individual instances of
2
C Bus interface are
identified by “n”, for example IICn, or IICCn for the IICn control register.
18.1 Features
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)
• I
2
C root clock sources from main oscillator, PLL and SSCG
• Two wire interface
– SCLn: serial clock
– SDAn: serial data
• Noise filter on SCLn and SDAn input
– spikes with a width of less than one period of IICLK are suppressed
• IICn interrupts can be used for triggering the DMA Controller
IIC
All devices
Instances
2
Names
IIC0 to IIC1
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