MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 304

• Manufacturer Part Number: MC912DG128ACPV
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128ACPV

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x8/10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Inter IC Bus
17.4 IIC System Configuration
17.5 IIC Protocol
Technical Data
304
SDA
SCL
SDA
SCL
Signal
Signal
Start
Start
MSB
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
MSB
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
1
1
2
2
Calling Address
Calling Address
3
3
The IIC 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. 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: START
signal, slave address transmission, data transfer and STOP signal. They
are described briefly in the following sections and illustrated in
2.
4
4
Freescale Semiconductor, Inc.
Figure 17-2. IIC Transmission Signals
5
5
For More Information On This Product,
6
6
7
7
Go to: www.freescale.com
Read/
Read/
Write
Write
LSB
LSB
8
8
Ack
Ack
Bit
9
Bit
Inter IC Bus
9
XX
Repeated
XXX
Signal
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
5
5
MC68HC912DT128A — Rev 4.0
D2
6
6
D1
7
7
Read/
Write
LSB
LSB
D0
8
8
Ack
No
Bit
Ack
No
9
9
Bit
MOTOROLA
Signal
Figure 17-
Stop
Signal
Stop