MC9S12HY64 Datasheet, PDF (363/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Inter-Integrated Circuit (IICV3) Block Description
10.1.2 Modes of Operation
The IIC functions the same in normal, special, and emulation modes. It has two low power modes: wait
and stop modes.
10.1.3 Block Diagram
The block diagram of the IIC module is shown in Figure 10-1.
IIC
Registers
Interrupt
bus_clock
Clock
Control
Start
Stop
Arbitration
Control
In/Out
Data
Shift
Register
SCL
SDA
Address
Compare
Figure 10-1. IIC Block Diagram
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
363