MC68340AG25E Freescale Semiconductor, MC68340AG25E Datasheet - Page 197
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MC68340AG25E
Manufacturer Part Number
MC68340AG25E
Description
IC MPU 32BIT 25MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340AG25E
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Controller Family/series
68K
Core Size
32 Bit
No. Of I/o's
16
Cpu Speed
25MHz
No. Of Timers
2
Embedded Interface Type
UART
Digital Ic Case Style
LQFP
Rohs Compliant
Yes
Processor Series
M683xx
Core
CPU32
Maximum Clock Frequency
25 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
Quantity:
135
Company:
Part Number:
MC68340AG25E
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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5.5.4 CPU32 Stack Frames
The CPU32 generates three different stack frames: four-word frames, six-word frames,
and twelve-word bus error frames.
5.5.4.1 FOUR-WORD STACK FRAME. This stack frame is created by interrupt, format
error, TRAP #n, illegal instruction, A-line and F-line emulator trap, and privilege violation
exceptions. Depending on the exception type, the PC value is either the address of the
next instruction to be executed or the address of the instruction that caused the exception
(see Figure 5-12).
5.5.4.2 SIX-WORD STACK FRAME. This stack frame (see Figure 5-13) is created by
instruction-related traps, which include CHK, CHK2, TRAPcc, TRAPV, and divide-by-zero,
and by trace exceptions. The faulted instruction PC value is the address of the instruction
that caused the exception. The next PC value (the address to which RTE returns) is the
address of the next instruction to be executed.
Hardware breakpoints also utilize this format. The faulted instruction PC value is the
address of the instruction executing when the breakpoint was sensed. Usually this is the
address of the instruction that caused the breakpoint, but, because released writes can
overlap following instructions, the faulted instruction PC may point to an instruction
following the instruction that caused the breakpoint. The address to which RTE returns is
the address of the next instruction to be executed.
5.5.4.3 BUS ERROR STACK FRAME. This stack frame is created when a bus cycle fault
is detected. The CPU32 bus error stack frame differs significantly from the equivalent
stack frames of other M68000 Family members. The only internal machine state required
in the CPU32 stack frame is the bus controller state at the time of the error and a single
register.
5-60
+$02
+$06
+$08
SP
SP
+$02
+$06
15
15
0
0
Figure 5-12. Format $0—Four-Word Stack Frame
Figure 5-13. Format $2—Six-Word Stack Frame
0
0
Freescale Semiconductor, Inc.
0
1
For More Information On This Product,
FAULTED INSTRUCTION PROGRAM COUNTER HIGH
FAULTED INSTRUCTION PROGRAM COUNTER LOW
0
0
NEXT INSTRUCTION PROGRAM COUNTER HIGH
NEXT INSTRUCTION PROGRAM COUNTER LOW
MC68340 USER’S MANUAL
Go to: www.freescale.com
PROGRAM COUNTER HIGH
PROGRAM COUNTER LOW
STATUS REGISTER
STATUS REGISTER
VECTOR OFFSET
VECTOR OFFSET
MOTOROLA
0
0
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