MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 327

• 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

18.4 Message Storage
18.4.1 Background
MC68HC912DT128A — Rev 4.0
MOTOROLA
msCAN12 facilitates a sophisticated message storage system which
addresses the requirements of a broad range of network applications.
Modern application layer software is built upon two fundamental
assumptions:
1. Any CAN node is able to send out a stream of scheduled
2. The internal message queue within any CAN node is organized
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messages without releasing the bus between two messages.
Such nodes will arbitrate for the bus right after sending the
previous message and will only release the bus in case of lost
arbitration.
such that if more than one message is ready to be sent, the
highest priority message will be sent out first.
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CAN station 1
CAN system
MSCAN Controller
TxCAN
Transceiver
msCAN12
Controller
Figure 18-1. The CAN System
RxCAN
CAN station 2
CAN
.....
CAN station n
MSCAN Controller
Message Storage
Technical Data
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