MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 579

• 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 18
Computer Operating Properly (COP)
18.1 Introduction
The computer operating properly (COP) module is used to help software recover from
runaway code. The COP is a free-running down counter that, once enabled, is designed to
generate a reset upon reaching zero. Software must periodically service the COP in order
to reload the counter and prevent a reset.
18.1.1 Features
The COP module includes these distinctive features:
18.1.2 Block Diagram
The block diagram of the COP module follows.
Freescale Semiconductor
• Programmable prescaler
• Programmable timeout period = (cop_prescaler*(TIMEOUT + 1)) clock cycles,
• Programmable wait and stop operation
• COP timer is disabled while the DSC is in debug mode
• Causes loss of reference reset 128 cycles after loss of reference clock to the PLL is
• Choice of one of three clock sources for counter
where TIMEOUT can be from 0x0000 to 0xFFFF
detected
• Relaxation oscillator (ROSC): 4 MHz or 400 kHz
• Crystal oscillator (COSC): 4 MHz to 16 MHz
• System bus clock (IP Bus clock): up to 60 MHz
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
Preliminary
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