MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 454

• Manufacturer Part Number: MC56F8257MLH
• Description: DSC 64K FLASH 60MHZ 64-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8257MLH

• Core Processor: 56800E
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Product: DSCs
• Processor Series: 56800E
• Core: 56800E
• Device Million Instructions Per Second: 60 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 54
• Data Ram Size: 8 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Memory Map and Register Definition
13.3.28 MSCAN Receive Buffer Data Length Register
This register keeps the data length field of the CAN frame.
Address: CAN_RXFG_DLR – F440h base + 2Ch offset = F46Ch
13.3.29 Receive Buffer Time Stamp Register - High Byte
If the TIME bit is enabled, the MSCAN will write a time stamp to the respective registers
in the active transmit or receive buffer right after the EOF of a valid message on the CAN
bus (see the section “MSCAN Control Register 0 (CANCTL0)” in this chapter). In case
of a transmission, the CPU can only read the time stamp after the respective transmit
buffer has been flagged empty.
454
Reset
Read
Write
Bit
Reserved
15–4
Field
DLC
3–0
15
0
(CAN_RXFG_DLR)
(CAN_RXFG_TSRH)
14
0
This read-only bitfield is reserved and always has the value zero.
Data Length Code
The data length code (DLC) bit 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 zero. The data byte count ranges from zero to eight for a data
frame.
0000
0001
0010
0011
0100
0101
0110
0111
1000
13
0
Data Byte Count 0
Data Byte Count 1
Data Byte Count 2
Data Byte Count 3
Data Byte Count 4
Data Byte Count 5
Data Byte Count 6
Data Byte Count 7
Data Byte Count 8
12
0
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
CAN_RXFG_DLR field descriptions
11
0
10
0
0
0
9
Preliminary
0
8
Description
0
7
0
6
0
5
0
4
0
3
Freescale Semiconductor
0
2
DLC
0
1
0
0