參數(shù)資料
型號(hào): MC68340FE25E
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 25.16 MHz, MICROCONTROLLER, CQFP144
封裝: CERAMIC, QFP-144
文件頁數(shù): 169/446頁
文件大?。?/td> 1800K
代理商: MC68340FE25E
MOTOROLA
MC68340 USER’S MANUAL
5- 113
5.7.3.14 SAVE AND RESTORE OPERATIONS. The save and restore operations table
indicates the number of clock periods needed for the processor to perform the specified
state save or return from exception. Complete execution times and stack length are given.
No additional tables are needed to calculate total effective execution time for these
instructions. The total number of clock cycles is outside the parentheses. The numbers
inside parentheses (r/p/w) are included in the total clock cycle number. All timing data
assumes two-clock reads and writes.
Instruction
Head
Tail
Cycles
BERR on instruction
0
2
<58(2/2/12)
BERR on exception
0
2
48(2/2/12)
RTE (four-word frame)
1
2
24(4/2/0)
RTE (six-word frame)
1
2
26(4/2/0)
RTE (BERR on instruction)
1
2
50(12/12/Y)
RTE (BERR on four-word frame)
1
2
66(10/2/4)
RTE (BERR on six-word frame)
1
2
70(12/2/6)
< = Maximum time is indicated (certain data or mode combinations execute faster).
Y = If a bus error occurred during a write cycle, the cycle is rerun by the RTE.
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PDF描述
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