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參數(shù)資料
| 型號： | PIC10F220EOT |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 6-Pin, 8-Bit Flash Microcontrollers |
| 中文描述： | 6引腳，8位閃存微控制器 |
| 文件頁數(shù)： | 13/78頁 |
| 文件大?。?/td> | 583K |
| 代理商： | PIC10F220EOT |
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2006 Microchip Technology Inc.
Preliminary
DS41270B-page 11
PIC10F220/222
3.1
Clocking Scheme/Instruction
Cycle
The clock is internally divided by four to generate four
non-overlapping quadrature clocks, namely Q1, Q2,
Q3 and Q4. Internally, the PC is incremented every Q1,
and the instruction is fetched from program memory
and latched into the Instruction Register (IR) in Q4. It is
decoded and executed during Q1 through Q4. The
clocks and instruction execution flow is shown in
Figure 3-2 and Example 3-1.
3.2
Instruction Flow/Pipelining
An instruction cycle consists of four Q cycles (Q1, Q2,
Q3 and Q4). The instruction fetch and execute are
pipelined such that fetch takes one instruction cycle,
while decode and execute takes another instruction
cycle. However, due to the pipelining, each instruction
effectively executes in one cycle. If an instruction
causes the PC to change (e.g.,
GOTO
) then two cycles
are required to complete the instruction (Example 3-1).
A fetch cycle begins with the PC incrementing in Q1.
In the execution cycle, the fetched instruction is latched
into the Instruction Register in cycle Q1. This instruc-
tion is then decoded and executed during the Q2, Q3
and Q4 cycles. Data memory is read during Q2 (oper-
and read) and written during Q4 (destination write).
FIGURE 3-2:
CLOCK/INSTRUCTION CYCLE
EXAMPLE 3-1:
INSTRUCTION PIPELINE FLOW
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
OSC1
Q1
Q2
Q3
Q4
PC
PC
PC + 1
PC + 2
Fetch INST (PC)
Execute INST (PC - 1)
Fetch INST (PC + 1)
Execute INST (PC)
Fetch INST (PC + 2)
Execute INST (PC + 1)
Internal
phase
clock
All instructions are single cycle, except for any program branches. These take two cycles, since the fetch instruction
is “flushed” from the pipeline, while the new instruction is being fetched and then executed.
1. MOVLW 03H
Fetch 1
Execute 1
Fetch 2
2. MOVWF GPIO
Execute 2
Fetch 3
3. CALL SUB_1
Execute 3
Fetch 4
4. BSF GPIO, BIT1
Flush
Fetch SUB_1 Execute SUB_1
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC10F220EP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:6-Pin, 8-Bit Flash Microcontrollers |
| PIC10F220-I | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D |
| PIC10F220I/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D |
| PIC10F220-I/MC | 功能描述:8位微控制器 -MCU 0.375KB 16B RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| PIC10F220I/OT | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:High-Performance Microcontrollers with 8-bit A/D |
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