MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 644

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

FlexCAN Module
Table 25-15
25-28
•
•
Transmit Point
Sample Point
SYNC_SEG
Syntax
Time Segment 1: Includes the propagation segment and the phase segment 1 of the CAN standard.
It can be programmed by setting the PROPSEG and the PSEG1 fields of the CANCTRL n register
so that their sum (plus 2) is in the range of 4 to 16 time quanta.
Time Segment 2: Represents the phase segment 2 of the CAN standard. It can be programmed by
setting the PSEG2 field of the CANCTRL n register (plus 1) to be 2 to 8 time quanta long.
gives an overview of the CAN compliant segment settings and the related parameter values.
It is the user’s responsibility to ensure the bit time settings are in compliance
with the CAN standard. For bit time calculations, use an IPT (Information
Processing Time) of 2, which is the value implemented in the FlexCAN
module
Transmit Point
SYNC_SEG
A node in transmit mode transfers a new value to the CAN bus at this point.
System expects transitions to occur on the bus during this period.
A node samples the bus at this point. If the three samples per bit option is selected, then this point
marks the position of the third sample.
1
NRZ Signal
Figure 25-15. Segments within the Bit Time
Bit Rate
Table 25-14. Time Segment Syntax
(PROP_SEG + PSEG1 + 2)
MCF5253 Reference Manual, Rev. 1
8 ... 25 Time Quanta
=
Time Segment 1
-------------------------------------------------------------
(number of Time Quanta)
= 1 Bit Time
4 ... 16
NOTE
f
Tq
Description
Sample Point
(single or triple sampling)
Time Segment 2
(PSEG2 + 1)
2 ... 8
Freescale Semiconductor
Eqn. 25-6