Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 Manuale Utente
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DEMO9S12XHY256
Inter-Integrated Circuit (IICV3) Block Description
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
395
12.1.2
Modes of Operation
The IIC functions the same in normal, special, and emulation modes. It has two low power modes: wait
and stop modes.
and stop modes.
12.1.3
Block Diagram
The block diagram of the IIC module is shown in
.
Figure 12-1. IIC Block Diagram
In/Out
Data
Shift
Register
Data
Shift
Register
Address
Compare
SDA
Interrupt
Clock
Control
Control
Start
Stop
Arbitration
Control
Stop
Arbitration
Control
SCL
bus_clock
IIC
Registers