MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 411

• 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

Chapter 12 Queued Serial Peripheral Interface (QSPI)
Figure 12-18. Missed Read of Overflow Condition
In this case, an overflow can easily be missed. Since no more SPRF interrupts can be
generated until this OVRF is serviced, it is not obvious that data is being lost as more
transactions are completed. To prevent this, either enable the OVRF interrupt or do
another read of the SCTRL register following the read of the DRCV register. This
ensures that the OVRF was not set before the SPRF was cleared and that future
transactions can set the SPRF bit. The following figure illustrates this process. Generally,
to avoid this second SCTRL read, enable the OVRF to the DSC by setting the ERRIE bit.
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
Preliminary
Freescale Semiconductor
411