MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 572

• 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

Introduction
17.1.4 Block Diagram
The basic POR and low voltage detect module appears in the following figure. The POR
circuit is designed to assert the internal reset when V
POR switching high indicates that the core and I/O voltages are above their thresholds.
The deglitch blocks are essentially strings of four flops in series. The outputs of all four
must agree before the STS[LV27F] or STS[LV21F] bits change state. This constraint
helps to prevent the LVI circuitry from responding to momentary glitches that occur as
part of normal operation.
572
2.5V
2.5V
The deglitch flops must be clocked by a continuously running
clock so these interrupts can wake the device if it is in stop
mode.
3.3V
Reference
Bandgap
1.2V
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
+
+
+
Figure 17-2. PS Block Diagram
POR_B
Deglitch
Deglitch
1.8V Detect
Preliminary
Note
LV21IE
LV27IE
D
D
DD
SLV21F
POR_B Output
SLV27F
is in the range from 0 V to 1.8 V.
Freescale Semiconductor
D
LVI