MC68040FE25V Freescale Semiconductor, MC68040FE25V Datasheet - Page 157

• Manufacturer Part Number: MC68040FE25V
• Description: IC MICROPROCESSOR 32BIT 184-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68040FE25V

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 184-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Clock 1 (C1)
MOTOROLA
The line read cycle starts in C1. During the first half of C1, the processor places valid
values on the address bus and transfer attributes. For user and supervisor mode
accesses that are translated by the corresponding memory unit, the UPAx signals are
driven with the values from the matching U1 and U0 bits. The TTx and TMx signals
identify the specific access type. The R/W signal is driven high for a read cycle, and the
size signals (SIZx) indicate line size. CIOUT is asserted for a MOVE16 operand read if
the access is identified as noncachable. Refer to Section 3 Memory Management Unit
UPA1, UPA0
NOTE: The selected device increments the value of A3 and A2.
SIZ1, SIZ0
TM2–TM0
TT1, TT0
A31–A4
D31–D0
CIOUT
Freescale Semiconductor, Inc.
A2–A0
BCLK
Figure 7-11. Line Read Transfer Timing
R/W
TIP
TCI
A3
TA
TS
For More Information On This Product,
A3, A2 =
C1
Go to: www.freescale.com
M68040 USER’S MANUAL
C2
01
C3
10
C4
11
C5
00
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