MC68040FE25A Freescale Semiconductor, MC68040FE25A Datasheet - Page 172
MC68040FE25A
Manufacturer Part Number
MC68040FE25A
Description
IC MICROPROCESSOR 32BIT 184-CQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC040FE33A.pdf
(442 pages)
Specifications of MC68040FE25A
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
184-CQFP
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
Instruction Set Architecture
RISC
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
184
Package Type
CQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68040FE25A
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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The M68040 asserts IPEND when an interrupt request is pending. Figure 7-20 illustrates
the assertion of IPEND relative to the assertion of an interrupt level on the IPL≈ signals.
IPEND signals external devices that an interrupt exception will be taken at an upcoming
instruction boundary (following any higher priority exception). The IPEND signal negates
after the processor recognizes the internal interrupt acknowledge and can precede the
external interrupt acknowledge bus cycle.
7-30
COMPARE REQUEST WITH MASK IN SR
IPLs RECOGNIZED
IPL2–IPL0
OTHERWISE
Figure 7-19. Interrupt Pending Procedure
IPLs SYNCHRONIZED
IPEND
BCLK
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 7-20. Assertion of
M68040 USER’S MANUAL
Go to: www.freescale.com
SAMPLE AND SYNCHRONIZE
ASSERT IPEND
IPL2–IPL0
RESET
INTERRUPT LEVEL I2–I0,
OR TRANSITION ON LEVEL 7
IPEND
ASSERT IPEND
>
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