MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 365

• 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

MPC555
USER’S MANUAL
In
Figure
• Because the TRLX bit is set, the assertion of the CS and WE strobes is delayed
• Because ACS = 11, the assertion of CS is delayed an additional half clock cycle.
• Because CSNT = 1, WE is negated one clock cycle earlier than normal. (Refer to
Address
RD/WR
WE/BE
/
by one clock cycle.
Figure
— The basic memory cycle requires two clock cycles.
— Two extra clock cycles are required due to the effect of TRLX on the assertion
Clock
MPC556
Data
OE
and negation of the CS and WE strobes.
CS
TS
TA
10-11, note the following:
10-6). The total cycle length is four clock cycles, determined as follows:
Figure 10-11 Relaxed Timing – Write Access
(ACS = 11, SCY = 0, CSNT = 1, TRLX = 1)
MEMORY CONTROLLER
Rev. 15 October 2000
ACS =11
ACS!=00 & CSNT = 1
CSNT = 1
MOTOROLA
10-13