MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 311

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

9.5.3 Burst Transfer
MPC555
USER’S MANUAL
CLKOUT
BR
BG
BB
ADDR[0:1]
RD/WR
TSIZ[0:1]
BURST, BDIP
TS
STS
Data
TA
or bus arbitration to intervene between the transfers. If any of the transactions except
the first is re-tried during an access to a small port, then an exception is generated to
the RCPU.
The MPC555 / MPC556 uses non-wrapping burst transfers to access operands of up
to 16 bytes (four words). A non-wrapping burst access stops accessing the external
device when the word address is modulo four. The MPC555 / MPC556 begins the ac-
cess by supplying a starting address that points to one of the words and requiring the
memory device to sequentially drive or sample each word on the data bus. The select-
/
MPC556
Write Cycle Timing, 16 Bit-Port Size
Figure 9-10 Single Beat 32-Bit Data
ADDR
00
EXTERNAL BUS INTERFACE
ABCDEFGH
Rev. 15 October 2000
10
ADDR + 2
EFGHEFGH
MOTOROLA
9-15