- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358635 > 39504 (Microchip Technology Inc.) Section 4. Architecture PDF資料下載
參數(shù)資料
| 型號： | 39504 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Section 4. Architecture |
| 中文描述： | 第4節(jié)。建筑 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 232K |
| 代理商： | 39504 |
2000 Microchip Technology Inc.
DS39504A-page 4-5
Section 4 Architecture
A
4
4.2
Clocking Scheme/Instruction Cycle
The clock input is internally divided by four to generate four non-overlapping quadrature clocks,
namely Q1, Q2, Q3 and Q4. Internally, the program counter is incremented every Q1, and the
instruction is fetched from the program memory and latched into the instruction register in Q4.
The instruction is decoded and executed during the following Q1 through Q4. The clocks and
instruction execution flow are illustrated in
Figure 4-3
and
Example 4-1
.
Figure 4-3:
Clock/Instruction Cycle
4.2.1
Phase Lock Loop (PLL)
The clock input is multiplied by four by the PLL. Therefore, when it is internally divided by four, it
provides an instruction cycle that is the same frequency as the external clock frequency. Four
non-overlapping quadrature clocks, namely Q1, Q2, Q3 and Q4 are still generated internally.
Internally, the program counter (PC) is incremented every Q1, and the instruction is fetched from
the program memory and latched into the instruction register in Q4. The instruction is decoded
and executed during the following Q1 through Q4. The clocks and instruction execution flow are
illustrated in
Figure 4-4
and
Example 4-1
.
Figure 4-4:
Clock/Instruction Cycle with PLL
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Device Clock
(OSC1 or T1OSCI)
Q1
Q2
Q3
Q4
PC
CLKOUT
(RC mode)
PC
PC+2
PC+4
Fetch INST (PC)
Execute INST (PC-2)
Fetch INST (PC+2)
Execute INST (PC)
Fetch INST (PC+4)
Execute INST (PC+2)
Internal
phase
clock
T
CY
1
T
CY
2
T
CY
3
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
PLL Output
Q1
Q2
Q3
Q4
PC
OSC2/CLKOUT
(RC mode)
PC
PC+2
PC+4
Fetch INST (PC)
Execute INST (PC-2)
Fetch INST (PC+2)
Execute INST (PC)
Fetch INST (PC+4)
Execute INST (PC+2)
Internal
phase
clock
T
CY
1
T
CY
2
T
CY
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 3965S-1.2 | 1.5A Ultra Low Dropout Linear Regulator |
| 39BS | surface mount silicon Zener diodes |
| 39HS | DIODE ZENER SINGLE 350mW 6.2Vz 20mA-Izt 0.05 5uA-Ir 4 SOT-23 3K/REEL |
| 39LF020 | DIODE ZENER TRIPLE ISOLATED 200mW 10Vz 20mA-Izt 0.05 3uA-Ir 8 SOT-363 3K/REEL |
| 39PS | 25PS, 42PS, 44PS, 45PS and 46PS Series Pressure Switches |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 395-0400 | 制造商:DELTRON 功能描述:PLUG INLINE 4MM GREEN |
| 3950400000 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fuse |
| 39504000000 | 功能描述:保險(xiǎn)絲 125V UL FA LL .400A TE5 RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| 395040002 | 制造商:MOLEX 制造商全稱:Molex Electronics Ltd. 功能描述:3.50mm (.138") Pitch Eurostyle? Horizontal Plug, with Retention Screws, 2 Circuits |
| 39504-0002 | 功能描述:可插拔接線端子 EURO 3.5MM 2 CIRCUIT HOR PLUG W/ SCREWS RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Plugs 系列:PTS 端接類型:Spring Cage 位置/觸點(diǎn)數(shù)量:5 線規(guī)量程:26-14 節(jié)距:5 mm 電流額定值:10 A 電壓額定值:250 V 安裝風(fēng)格: 安裝角: 觸點(diǎn)電鍍: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。