MC9S08GB60 Datasheet, PDF (206/290 Pages) Motorola, Inc – Microcontrollers

Inter-Integrated Circuit (IIC) Module
13.1.3 Block Diagram
Figure 13-2 is a block diagram of the IIC.
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 13-2. IIC Functional Block Diagram
13.1.4 Detailed Signal Descriptions
This section describes each user-accessible pin signal.
13.1.4.1 SCL1 — Serial Clock Line
The bidirectional SCL1 is the serial clock line of the IIC system.
13.1.4.2 SDA1 — Serial Data Line
The bidirectional SDA1 is the serial data line of the IIC system
MC9S08GB/GT Data Sheet, Rev. 2.3
206
Freescale Semiconductor