MC9S08AW32CFGE Freescale, MC9S08AW32CFGE Datasheet - Page 225
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MC9S08AW32CFGE
Manufacturer Part Number
MC9S08AW32CFGE
Description
Manufacturer
Freescale
Datasheet
1.MC9S08AW32CFGE.pdf
(324 pages)
Specifications of MC9S08AW32CFGE
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
40MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
34
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
LQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
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13.4
This section provides a complete functional description of the IIC module.
13.4.1
The IIC bus system uses a serial data line (SDA) and a serial clock line (SCL) for data transfer. All devices
connected to it must have open drain or open collector outputs. A logic AND function is exercised on both
lines with external pull-up resistors. The value of these resistors is system dependent.
Normally, a standard communication is composed of four parts:
The STOP signal should not be confused with the CPU STOP instruction. The IIC bus system
communication is described briefly in the following sections and illustrated in
Freescale Semiconductor
SDA
SCL
SDA
SCL
•
•
•
•
SIGNAL
SIGNAL
START
START
START signal
Slave address transmission
Data transfer
STOP signal
MSB
MSB
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
Functional Description
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
1
1
IIC Protocol
2
2
CALLING ADDRESS
CALLING ADDRESS
3
3
4
4
5
5
6
6
Figure 13-8. IIC Bus Transmission Signals
7
7
READ/
WRITE
READ/
WRITE
LSB
LSB
8
8
MC9S08AW60 Data Sheet, Rev 2
ACK
ACK
BIT
BIT
9
9
XX
REPEATED
SIGNAL
XXX
START
MSB
MSB
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
D7
1
1
D6
2
2
NEW CALLING ADDRESS
D5
3
3
DATA BYTE
D4
4
4
D3
Chapter 13 Inter-Integrated Circuit (S08IICV1)
5
5
D2
6
6
D1
7
7
Figure
READ/
WRITE
LSB
LSB
D0
8
8
ACK
BIT
NO
ACK
NO
BIT
9
9
13-8.
SIGNAL
SIGNAL
STOP
STOP
225
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