MC9S08QE16CLC Datasheet, PDF (196/350 Pages) Freescale Semiconductor, Inc – Low-power wireless applications, Gas, water and heater meters

Inter-Integrated Circuit (S08IICV2)
Address
ADDR_DECODE
Interrupt
Data Bus
DATA_MUX
CTRL_REG FREQ_REG ADDR_REG
STATUS_REG
DATA_REG
Input
Sync
Clock
Control
Start
Stop
Arbitration
Control
In/Out
Data
Shift
Register
Address
Compare
SCL
SDA
Figure 11-2. IIC Functional Block Diagram
11.2 External Signal Description
This section describes each user-accessible pin signal.
11.2.1 SCL — Serial Clock Line
The bidirectional SCL is the serial clock line of the IIC system.
11.2.2 SDA — Serial Data Line
The bidirectional SDA is the serial data line of the IIC system.
11.3 Register Definition
This section consists of the IIC register descriptions in address order.
Refer to the direct-page register summary in the memory chapter of this document for the absolute address
assignments for all IIC registers. This section refers to registers and control bits only by their names. A
MC9S08AC60 Series Data Sheet, Rev. 3
196
Freescale Semiconductor