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參數(shù)資料
| 型號： | M37150M8-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42 |
| 封裝： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件頁數(shù)： | 138/142頁 |
| 文件大小： | 1712K |
| 代理商： | M37150M8-XXXFP |
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37150M6/M8/MA/MC/MF-XXXFP, M37150EFFP
MITSUBISHI MICROCOMPUTERS
94
Rev. 1.0
8.14 CLOCK GENERATING CIRCUIT
This microcomputer contains two internal oscillator circuits, one os-
cillator circuit for the main clock and XCIN-XCOUT for the subclock.
The main clock and OSD clock are generated based on the refer-
ence clock from the FSCIN pin. The subclock can be obtained by
connecting a resonator between XCIN and XCOUT to configure an
oscillator circuit. Because the resistance-capacitance time constants
vary with each resonator, be sure to use the value recommended by
the resonator manufacturer. The subclock can also be supplied di-
rectly from the FSCIN pin. For the FILT pin used to generate the
main clock, insert the filter shown in Figure 8.1.4.1. Because no re-
sistors are included between XCIN and XCOUT, please insert feed-
back resistors external to the chip.
The OSD clock can be chosen to be the data slicer clock (approx. 26
MHz) that is output from the data slicer.
After reset, the internal clock f is derived from f(XIN) by dividing it by 2.
Immediately after power-on, the XIN and XCIN clocks both start oscil-
lating. To select low-speed mode for the internal clock f, set the CPU
Mode Register bit 7 to 1.
Fig.8.14.1 Ceramic Resonator Circuit Example
XCIN
FSCIN
CCIN
Microcomputer
XCOUT
Rf
Rd
CCOUT
FILT
External input
C1
0.01
F
XCIN/XCOUT
f(XIN)
f(OSC)
FSCIN
(3.58MHz)
or
(4.43MHz)
Inside system
clock of switch circuit
f(XCIN)
Main clock
Clock for OSD
Sub clock
"1"
"0"
CC2 address 021116 bit 2
"0"
CM address 00FB16 bit 7(CM7)
"0"
OC2 address 00D016 bit 3 or 4
Data slicer circuit
Generating circuit
system clock
32kHz of
oscillation circuits
f (
Φ)
f(XIN) = 8.95 MHz f(OSC) = 26.85 MHz at 3.58 MHz oscillation frequency
f(XIN) = 8.86 MHz f(OSC) = 26.58 MHz at 4.43 MHz oscillation frequency
Fig.8.14.2 Clock Generation Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37150MF-XXXFP | 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42 |
| M37150MC-XXXFP | 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42 |
| M37151MC-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
| M37151MF-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
| M37151M6-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37150MA | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37150MA-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37150MC | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37150MC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37150MF | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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