MC9RS08KA8RM Datasheet, PDF (133/190 Pages) Freescale Semiconductor, Inc – MC9RS08KA8 Features

Inter-Integrated Circuit (RS08IICV2)
12.1.2 Features
The IIC includes these distinctive features:
• Compatible with IIC bus standard
• Multi-master operation
• Software programmable for one of 64 different serial clock frequencies
• Software selectable acknowledge bit
• Interrupt driven byte-by-byte data transfer
• Arbitration lost interrupt with automatic mode switching from master to slave
• Calling address identification interrupt
• START and STOP signal generation/detection
• Repeated START signal generation
• Acknowledge bit generation/detection
• Bus busy detection
• General call recognition
• 10-bit address extension
12.1.3 Modes of Operation
A brief description of the IIC in the various MCU modes is given here.
• Run mode — This is the basic mode of operation. To conserve power in this mode, disable the
module.
• Wait mode — The module will continue to operate while the MCU is in wait mode and can
provide a wake-up interrupt.
• Stop mode — The IIC is inactive in stop mode for reduced power consumption. The STOP
instruction does not affect IIC register states.
12.1.4 Block Diagram
Figure 12-2 is a block diagram of the IIC.
MC9RS08KA8 Series Reference Manual, Rev. 3
Freescale Semiconductor
133