參數(shù)資料
型號(hào)： GMS37112T
廠商： HYNIX SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 4-BIT SINGLE CHIP MICROCOMPUTERS
中文描述： 4-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP20
封裝： 0.300 INCH, PLASTIC, DIP-20
文件頁(yè)數(shù)： 38/109頁(yè)
文件大小： 813K
代理商： GMS37112T
4-5
State Counter (SC)
A fundamental machine cycle timing chart is shown below. Every instruction is
one byte length. Its execution time is the same. Execution of one instruction
takes 6 clocks for fetch cycle and 6 clocks for execute cycle (12 clocks in total).
Virtually these two cycles proceed simultaneously, and thus it is apparently
completed in 6 clocks (one machine cycle). Exceptionally BR, CAL and RTN
instructions is normal execution time since they change an addressing sequentially.
Therefore, the next instruction is prefetched so that its execution is completed
within the fetch cycle.
Fig. 4-3 Fundamental timing chart
T1 T2 T3 T4 T5 T6 T1 T2 T3 T4 T5 T6
Fetch cycle N
Execute cycle N-1
Execute cycle N
Fetch cycle N-1
Phase
é
Phase
ê
Phase
Machine
Cycle
Machine
Cycle
Chapter 4. FUNCTIONAL DESCRIPTION
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GMS-3-QY 制造商:Panduit Corp 功能描述:
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