MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 349
MC912DG128ACPV
Manufacturer Part Number
MC912DG128ACPV
Description
IC MCU 128K FLASH 8MHZ 112-LQFP
Manufacturer
Freescale Semiconductor
Series
HC12r
Datasheet
1.MC912DG128ACPVER.pdf
(478 pages)
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
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18.12.3 Data Length Register (DLR)
MC68HC912DT128A — Rev 4.0
MOTOROLA
RTR — Remote transmission request
This register keeps the data length field of the CAN frame.
DLC3 – DLC0 — Data length code bits
This flag reflects the status of the Remote Transmission Request bit
in the CAN frame. In case of a receive buffer it indicates the status of
the received frame and allows to support the transmission of an
answering frame in software. In case of a transmit buffer this flag
defines the setting of the RTR bit to be sent.
The data length code contains the number of bytes (data byte count)
of the respective message. At transmission of a remote frame, the
data length code is transmitted as programmed while the number of
transmitted bytes is always 0. The data byte count ranges from 0 to 8
for a data frame.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = Data frame
1 = Remote frame
Go to: www.freescale.com
MSCAN Controller
DLC3
0
0
0
0
0
0
0
0
1
Table 18-3. Data length codes
Table 18-3
Data length code
DLC2
0
0
0
0
1
1
1
1
0
shows the effect of setting the DLC bits.
DLC1
0
0
1
1
0
0
1
1
0
Programmer’s Model of Message Storage
DLC0
0
1
0
1
0
1
0
1
0
count
Data
byte
0
1
2
3
4
5
6
7
8
MSCAN Controller
Technical Data
349
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