MC68HC12 Datasheet, PDF (302/478 Pages) Motorola, Inc – The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit

Inter IC Bus
17.3 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 17-1.
Technical Data
302
Inter IC Bus
MC68HC912DT128A — Rev 4.0
MOTOROLA