MC68040RC40V Freescale Semiconductor, MC68040RC40V Datasheet - Page 231
MC68040RC40V
Manufacturer Part Number
MC68040RC40V
Description
IC MICROPROCESSOR 32BIT 179-PGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC040FE33A.pdf
(442 pages)
Specifications of MC68040RC40V
Processor Type
M680x0 32-Bit
Speed
40MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
179-PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
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After the initial instruction is prefetched, program execution begins at the address in the
PC. The reset exception does not flush the ATCs or invalidate entries in the instruction or
data caches; it does not save the value of either the PC or the SR. If an access fault or
address error occurs during the exception processing sequence for a reset, a double bus
fault is generated. The processor halts, and the processor status (PST3–PST0) signals
indicate $5. Execution of the reset instruction does not cause a reset exception, or affect
8-18
Figure 8-5. Reset Exception Processing Flowchart
BEGIN INSTRUCTION
Freescale Semiconductor, Inc.
DTTn[E-bit]
FETCH VECTOR #0
FETCH VECTOR #1
VECTOR #0
ITTn[E-bit]
VECTOR #1
LONG WORDS
For More Information On This Product,
PREFETCH 4
OTHERWISE
OTHERWISE
OTHERWISE
EXECUTION
T1, T0
CACR
ENTRY
VBR
I2:I0
EXIT
M
S
=
=
=
=
=
=
=
=
M68040 USER’S MANUAL
SP
Go to: www.freescale.com
PC
1
0
0
$7
$0
$0
0
0
ADDRESS ERROR
BUS ERROR
BUS ERROR OR
BUS ERROR
(DOUBLE BUS FAULT)
(DOUBLE BUS FAULT)
(DOUBLE BUS FAULT)
(PST3–PST0 = $5)
HALTED STATE
EXIT
MOTOROLA
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