參數(shù)資料
型號(hào)： M37221M6-XXXSP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, PLASTIC, SDIP-42
文件頁(yè)數(shù)： 75/113頁(yè)
文件大小： 1254K
代理商： M37221M6-XXXSP
64
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37221M4/M8/MA–XXXSP, M37221M6–XXXSP/FP
M37221EASP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
8.11.3 Clock for OSD
As a clock for display to be used for OSD, it is possible to select one
of the following 4 types.
Main clock supplied from XIN pin
Main clock supplied from XIN pin divided by I.5
Clock from the ceramic resonator or the LC or oscillator from the
pins OSC1 and OSC2
Clock from the ceramic resonator or the quartz-crystal oscillator
supplied from the pins OSC1 and OSC2.
This OSD clock for each block can be selected by the OSD clock
selection register (address 00ED16).
When selecting the main clock, set the oscillation frequency to
8 MHz.
Fig. 8.11.10 OSD clock selection Circuit
b7 b6 b5 b4 b3 b2 b1 b0
OSD clock selection register (CK) [Address 00ED16]
B
Name
Functions
After reset R W
OSD Clock Selection Register
0, 1 OSD clock
selection bits
(CK0,CK1)
0
Since the main clock is used as the
clock for display, the oscillation
frequency is limited. Because of this,
the character size in width (horizontal)
direction is also limited. In this case,
pins OSC1 and OSC2 are also used
as input ports P33 and P34 respectively.
The clock for OSD is supplied by connecting the
following across the pins OSC1 and OSC2.
a ceramic resonator only for OSD
a quartz-crystal oscillator only for OSD and a
feedback resistor (See note)
2 to 7
0
b1
The clock for display is supplied by connecting RC
or LC across the pins OSC1 and OSC2.
Functions
00
b0
OSD oscillation
frequency
= f(XIN)
OSD oscillation
frequency
= f(XIN)/1.5
Note: It is necessary to connect other ceramic resonator or quartz-crystal oscillator for OSD across the pINs XIN and XOUT.
0
1
Fix these bits to “0.”
R W
相關(guān)PDF資料
PDF描述
M37221M6H-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
M37221EASP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP42
M37221M4H-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
M37221M8H-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
M37221M6H-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37221M8H 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M8H-XXXFP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M8H-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221MAH-XXXFP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221MAH-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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