Features; Modes Of Operation - ROHS MC9S08QE128 Reference Manual

12.1.3

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
12.1.4

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 stop3 mode for reduced power consumption. The STOP
instruction does not affect IIC register states. Stop2 will reset the register contents.
Freescale Semiconductor
MC9S08QE128 MCU Series Reference Manual, Rev. 2
Inter-Integrated Circuit (S08IICV2)
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