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參數(shù)資料
| 型號： | M34518M4-XXXSP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32 |
| 封裝： | 0.400 INCH, 1.78 MM PITCH, PLASTIC, SDIP-32 |
| 文件頁數(shù)： | 154/157頁 |
| 文件大?。?/td> | 1783K |
| 代理商： | M34518M4-XXXSP |
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ML610Q411/ML610Q412/ML610Q415 User’s Manual
Chapter 6
Clock Generation Circuit
6 – 11
6.3.2.3
Operation of High-Speed Clock Generation Circuit
The high-speed clock generation circuit is activated in 500Hz RC oscillation mode by power-on reset generation.
As a result of the occurrence of power-on reset, the circuit goes into system reset mode and then shifts to program
operating mode after the elapse of the high-speed RC oscillation start time (TRC) and the oscillation stabilization time
(Count: 8192) of the high-speed oscillation clock (OSCLK) and at the same time, a high-speed clock (HSCLK) is
supplied to the peripheral circuits.
Figure 6-6 shows the waveforms of the high-speed clock generation circuit at power on.
For the high-speed RC
oscillation start time (TRC), see Appendix C, “Electrical Characteristics”.
Figure 6-6
Operation of High-Speed Clock Generation Circuit at Power-On
The high-speed clock generation circuit allows selection of an oscillation mode and start/stop of oscillation by using the
frequency control registers 0 and 1 (FCON0 and FCON1).
Oscillation can be started by setting the ENOSC bit to “1” after selecting a high-speed oscillation mode in FCON0 and
a high-speed oscillation frequency.
After the start of oscillation, HSCLK starts supply of a clock to the peripheral
circuits following the elapse of the high-speed oscillation start period (TRC) and the oscillation stabilization period of
the high-speed oscillation clock.
The high-speed clock generation circuit stops oscillation in STOP mode. When the STOP mode is released by external
interrupt, HSCLK supplies clocks to peripheral circuits following the elapse of the high-speed oscillation start period
(TRC) and the oscillation stabilization period of the high-speed clock. The oscillation stabilization period is the duration
of 128 clock pulses.
High-speed oscillation
Count: 8192
CPU start
High-speed oscillation clock waveform
TRC: Oscillation start time
Power supply VDD
RESET
High-speed oscillation
clock waveform
System clock
SYSCLK
SYSCLK waveform
HSCLK waveform
High-speed clock
HSCLK
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| M34519M8-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34520M8A-XXXFP | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP64 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34518M6-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34518M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34519E8FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES |
| M34519M6-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES |
| M34519M8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES |
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