MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 140

• 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

Resets
5.3.5.2 Slew Effects
The example waveforms are ideal waveforms and show transitions as step functions. In
reality, the DAC output has a finite slew rate that rounds off the steps. Whether this
rounding off is noticeable depends on the output step size (larger output changes require
longer settling times) and on the update period (longer dwell times make the settling
times less noticeable).
5.3.5.3 Clipping Effects (Automatic Mode Only)
One form of clipping occurs during automatic waveform generation when the difference
between MAXVAL and MINVAL is not a (near) even multiple of the STEP value. This
results in a partial step as the waveform approaches MAXVAL and MINVAL. The
following figure shows an example.
VDD
MAXVAL
STEP
Clipped
Step
MINVAL
VSS
SYNC_IN
Figure 5-14. Triangle Waveform Example with Clipping
Another form of clipping occurs when the MAXVAL or MINVAL is beyond the output
range of the DAC. The maximum and minimum voltages that can be driven out are
defined in the device data sheet.
5.4 Resets
When reset, all of the registers return to the reset state.
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
Preliminary
140
Freescale Semiconductor