參數(shù)資料
型號： M37280MFH-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64
封裝： 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁數(shù)： 152/172頁
文件大?。?/td> 2033K
代理商： M37280MFH-XXXSP
79
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37280MFH–XXXSP, M37280MKH–XXXSP
M37280EKSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Bit 7 of Port P3
Direction Register
Clock Control
Register
8.11.4 Clock for OSD
As a clock for display to be used for OSD, it is possible to select one
of the following 3 types.
Data slicer clock output from the data slicer (approximately 26 MHz)
Clock from the LC oscillator supplied from the pins OSC1 and OSC2
Clock from the ceramic resonator or the quartz-crystal oscillator
from the pins OSC1 and OSC2
The clock for display to be used for OSD can be selected by bit 7 of
port P3 direction register, bit 2 and bit 1 of clock source control reg-
ister (address 021616). If the pins OSC1 and OSC2 are not used as
OSD clock input/output, these pins can be used as the sub-clock
input/output, or port P6.
Fig. 8.11.16 Clock Control Register
Table 8.11.3 Setting of P63/OSC1/XCIN, P64/OSC2/XCOUT
Bit 2
Bit 1
Clock input/
output pins
for OSD
Sub-clock
input/
output pins
0
Function
Registers
Input port
1
0
1
0
1
0
1
b7 b6 b5 b4 b3 b2 b1 b0
Clock control register (CS) [Address 021616]
B
Name
Functions
After reset R W
Clock Control Register
0
Clock selection bit
(CS0)
0
R W
1, 2
0: Data slicer clock
1: OSC1 clock
0
R W
70
R W
Test bit
(See note 2)
OSC1 oscillating mode
selection bits (CS1, CS2) 0 0: 32kHz oscillating mode.
0 1: Used as input port of P63
and P64 (See note 1).
1 0: LC oscillating mode
1 1: Ceramic quartz-crystal
oscillating mode
b2
b1
Note 1: Set bit 7 of address 00C716 to “1”, when OSC1 and OSC2 are used as P63
and P64.
2: Be sure to set bit 7 to “0” for program of the mask and the EPROM versions.
For the emulator MCU version (M37280ERSS), be sure to set bit 7 to “1”
when using the data slicer clock for software debugging.
00
0
Fix these bits to “0.”
0
R W
3 to 6
0
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相關(guān)代理商/技術(shù)參數(shù)
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M37280MF-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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