MC68LC040RC25A Freescale Semiconductor, MC68LC040RC25A Datasheet - Page 231

• Manufacturer Part Number: MC68LC040RC25A
• Description: IC MPU 32BIT 25MHZ 179-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68LC040RC25A

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 179-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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
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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