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參數(shù)資料
| 型號： | M3455AG8FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52 |
| 文件頁數(shù)： | 2/150頁 |
| 文件大?。?/td> | 1818K |
| 代理商： | M3455AG8FP |
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Rev.1.02
Nov 26, 2008
Page 8 of 146
REJ03B0224-0102
455A Group
DEFINITION OF CLOCK AND CYCLE
Operation source clock
The operation source clock is the source clock to operate this
product. In this product, the following clocks are used.
Clock (f(XIN)) by the external ceramic resonator
Clock (f(XIN)) by the external input
Clock (f(HSOCO)) of the high-speed on-chip oscillator which is
the internal oscillator
Clock (f(XCIN)) by the external quartz-crystal oscillation
Clock (f(LSOCO)) by the low-speed on-chip oscillator
System clock (STCK)
The system clock is the basic clock for controlling this product.
The system clock is selected by the clock control register MR
shown as the table below.
Machine cycle
The machine cycle is the standard cycle required to execute the
instruction.
Instruction clock (INSTCK)
The instruction clock is the basic clock for controlling CPU. The
instruction clock (INSTCK) is a signal derived by dividing the
system clock (STCK) by 3. The one instruction clock cycle
generates the one machine cycle.
Note 1. The f(HSOCO)/8 is selected after system is released from reset
Table 7
Table Selection of system clock
Register MR
System clock
Operation mode
MR3
MR2
MR1
MR0
1
0
f(STCK) = f(HSOCO)/8
Internal frequency divided by 8 mode
1
0
f(STCK) = f(HSOCO)/4
Internal frequency divided by 4 mode
0
1
0
f(STCK) = f(HSOCO)/2
Internal frequency divided by 2 mode
0
f(STCK) = f(HSOCO)
Internal frequency through mode
1
0
1
f(STCK) = f(XIN)/8
High-speed frequency divided by 8 mode
1
0
1
f(STCK) = f(XIN)/4
High-speed frequency divided by 4 mode
0
1
0
1
f(STCK) = f(XIN)/2
High-speed frequency divided by 2 mode
0
1
f(STCK) = f(XIN)
High-speed through mode
1
0
f(STCK) = f(XCIN)/8
Low-speed frequency divided by 8 mode
1
0
1
0
f(STCK) = f(XCIN)/4
Low-speed frequency divided by 4 mode
0
1
0
f(STCK) = f(XCIN)/2
Low-speed frequency divided by 2 mode
0
1
0
f(STCK) = f(XCIN)
Low-speed through mode
1
f(STCK) = f(LSOCO)/8
Internal Low-speed frequency divided by 8 mode
1
0
1
f(STCK) = f(LSOCO)/4
Internal Low-speed frequency divided by 4 mode
0
1
f(STCK) = f(LSOCO)/2
Internal Low-speed frequency divided by 2 mode
0
1
f(STCK) = f(LSOCO)
Internal Low-speed through mode
相關(guān)PDF資料 |
PDF描述 |
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| M34570MD-XXXFP | 4-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO36 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M3455AG8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AGCFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AGC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455-SL001 | 制造商:Alpha Wire 功能描述: |
| M3455-SL002 | 制造商:Alpha Wire 功能描述: |
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