mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 453

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
19.19 Power Supply Pins
The VDD/GND pins are connected to 3.3 V supply and associated ground. When the
on-chip USB transceiver is used, the USB_VDD and USB_GND pins are connected to the
3.3 V device supply and associated ground. When the on-chip USB transceiver is not used,
USB_GND should be connected to the device GND and USB_VDD left unconnected.
Refer to Section 12.2.1.1 USB Transceiver Interface.
Table 19-9. MCF5272 CS0 Memory Bus Width Selection
Table 19-10. MCF5272 High Impedance Mode Selection
Table 19-8. MCF5272 Bus Width Selection
HI-Z
0
1
BUSW1
Enable HI-Z mode, all pins are high impedance
Normal operation
Chapter 19. Signal Descriptions
0
0
1
1
WSEL
0
1
BUSW0
0
1
0
1
Data Bus Width
Data Bus Width
Reserved, do not use.
16 Bits
CS0 Bus Width
32 bits
32 bits
16 bits
8 bits
Power Supply Pins
19-39