MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 371

• 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

If start bit verification is not successful, the RT clock is reset and a new search for a start
bit begins.
To determine the value of a data bit and to detect noise, recovery logic takes samples at
RT8, RT9, and RT10. The following table summarizes the results of the data bit samples.
To verify a stop bit and to detect noise, recovery logic takes samples at RT8, RT9, and
RT10. The following table summarizes the results of the stop bit samples.
Freescale Semiconductor
RT8, RT9, and RT10 Samples
RT3, RT5, and RT7 Samples
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
The RT8, RT9, and RT10 samples do not affect start bit
verification. If any or all of the RT8, RT9, and RT10 start bit
samples are logic ones following a successful start bit
verification, the noise flag (STAT[NF]) is set and the receiver
assumes that the bit is a start bit (logic zero).
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
Table 11-24. Start Bit Verification
Table 11-25. Data Bit Recovery
Data Bit Determination
Start Bit Verification
Preliminary
Note
Yes
Yes
Yes
Yes
No
No
No
No
Chapter 11 Queued Serial Communications Interface (QSCI)
0
0
0
1
0
1
1
1
Noise Flag
Noise Flag
0
1
1
0
1
0
0
0
0
1
1
1
1
1
1
0
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