MCF5272VF66 Freescale Semiconductor, MCF5272VF66 Datasheet - Page 262
![IC MPU 32BIT 66MHZ 196-MAPBGA](/photos/13/94/139412/mcf5272vf66_sml.jpg)
MCF5272VF66
Manufacturer Part Number
MCF5272VF66
Description
IC MPU 32BIT 66MHZ 196-MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF527xr
Specifications of MCF5272VF66
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
66MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, UART/USART, USB
Peripherals
DMA, WDT
Number Of I /o
32
Program Memory Size
16KB (4K x 32)
Program Memory Type
ROM
Ram Size
1K x 32
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
196-MAPBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Universal Serial Bus (USB)
However, to reduce power consumption, USB_VDD may be left unconnected if either of the following is
true:
12.2.1.2
The USB module requires two clock inputs; the system clock and a 48-MHz data clock. The data clock
source is selectable between the USB_ExtCLK pin or the system clock. The clock generator automatically
uses the external clock as the data clock if it detects the presence of a clock signal on the USB_CLK pin
during system reset. This automatic selection can be overridden by setting bit USBEPCTL0[CLK_SEL],
. If a clock signal is not present on USB_CLK, the clock generator uses the system clock.
12.2.1.3
The control logic performs the following functions:
12-4
•
•
•
•
•
The USB module is not used.
An external transceiver is used.
For transmitted data:
— Packet creation
— Parallel-to-serial conversion
— CRC generation
— NRZI encoding
— Bit stuffing
For received data:
— Sync detection
— Packet identification
— End-of-packet detection
— Serial-to-parallel conversion
— CRC validation
— NRZI decoding
— Bit unstuffing
For error detection:
— Bad CRC
— Timeout waiting for end-of-packet
— Bit stuffing violations
Clock Generator
USB Control Logic
In all cases, the system clock must be at least 24-MHz for the USB module
to function properly. If the system clock is used for the USB data clock, the
system clock frequency must be 48-MHz.
MCF5272 ColdFire
®
Integrated Microprocessor User’s Manual, Rev. 3
NOTE
Freescale Semiconductor
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