Freescale Semiconductor, Inc.
Inter-IC Bus
15.3 IIC Features
The IIC module has the following key features:
• Compatible with I2C 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
• Eight-bit general purpose I/O port
A block diagram of the IIC module is shown in Figure 15-1.
Technical Data
MC68HC912DG128 — Rev 3.0
Inter-IC Bus
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