MC9S12P32MFT Freescale Semiconductor, MC9S12P32MFT Datasheet - Page 283

• Manufacturer Part Number: MC9S12P32MFT
• Description: 16-bit Microcontrollers - MCU 16 BIT 32K FLASH
• Manufacturer: Freescale Semiconductor

Specifications of MC9S12P32MFT

• Rohs: yes
• Core: S12
• Processor Series: MC9S12P
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 32 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 4 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 125 C
• Package / Case: QFN-48
• Mounting Style: SMD/SMT

8.3.3.3
This register keeps the data length field of the CAN frame.
8.3.3.4
This register defines the local priority of the associated message buffer. The local priority is used for the
internal prioritization process of the MSCAN and is defined to be highest for the smallest binary number.
The MSCAN implements the following internal prioritization mechanisms:
Freescale Semiconductor
Module Base + 0x00XC
DLC[3:0]
Field
•
•
3-0
Reset:
All transmission buffers with a cleared TXEx flag participate in the prioritization immediately
before the SOF (start of frame) is sent.
The transmission buffer with the lowest local priority field wins the prioritization.
W
R
Data Length Code Bits — The data length code contains the number of bytes (data byte count) of the respective
message. During the transmission of a remote frame, the data length code is transmitted as programmed while
the number of transmitted data bytes is always 0. The data byte count ranges from 0 to 8 for a data frame.
Table 8-35
Data Length Register (DLR)
Transmit Buffer Priority Register (TBPR)
x
7
Figure 8-35. Data Length Register (DLR) — Extended Identifier Mapping
DLC3
0
0
0
0
0
0
0
0
1
shows the effect of setting the DLC bits.
= Unused; always read “x”
6
x
Table 8-34. DLR Register Field Descriptions
S12P-Family Reference Manual, Rev. 1.13
DLC2
0
0
0
0
1
1
1
1
0
Table 8-35. Data Length Codes
Data Length Code
5
x
DLC1
4
x
0
0
1
1
0
0
1
1
0
Description
Freescale’s Scalable Controller Area Network (S12MSCANV3)
DLC3
3
x
DLC0
0
1
0
1
0
1
0
1
0
DLC2
x
2
Data Byte
Count
DLC1
0
1
2
3
4
5
6
7
8
x
1
DLC0
x
0
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