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參數(shù)資料
| 型號(hào)： | UPD6461GT |
| 廠商： | NEC Corp. |
| 英文描述： | CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS |
| 中文描述： | 大規(guī)模集成電路芯片的CMOS攝像機(jī)屏幕字符顯示12行x 24個(gè)欄目 |
| 文件頁數(shù)： | 23/60頁 |
| 文件大小： | 411K |
| 代理商： | UPD6461GT |
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23
μ
PD6461, 6462
3.2 CHARACTER DISPLAY CONTROL COMMAND
This command turns on/off character display, LC oscillation, and the blinking of characters.
(1) For MSB-first transfer (Command bits are input starting from the MSB (D7).)
D7
0
D6
0
D5
0
D4
1
D3
DO
D2
LC
D1
BL1
D0
BL0
(MSB)
(LSB)
BL1
0
0
1
1
BL0
0
1
0
1
LC
0
1
DO
0
1
Function
Turns off blinking.
Turns on 2 Hz blinking.
Turns on 1 Hz blinking.
Turns on 0.5 Hz blinking.
Blinking control bits
LC oscillation control bit
Function
Turns off LC oscillator.
Turns on LC oscillator.
Function
Turns off character display.
Turns on character display.
Character display on/off control bit
(2) For LSB-first transfer (Command bits are input starting from the LSB (D0). The function of each bit is the same as
that for MSB-first transfer.)
Blinking control bits
These bits are used to turn on or off the blinking of characters for which blinking has been enabled with the displayed
character control command. The blinking ratio is 1:1, one of three blinking frequencies being selectable for the entire
screen.
LC oscillation control bit
This bit is used to turn the oscillator on or off. You can stop the oscillator when no character is being displayed,
thus reducing the power consumption.
While the oscillator is stopped, it is not possible to write to video RAM. Turn on the oscillator before attempting
to write to video RAM.
Cautions 1. When using LC oscillation (LC oscillation control bit = 1): When character display is turned on, the
oscillation is synchronized with Hsync, stopping when Hsync goes low. When character display
is turned off, oscillation continues regardless of the state of Hsync.
2. When using an external clock (LC oscillation control bit = 1): While the oscillator is turned on, clock
pulses are supplied to the IC internal circuit. While the oscillator is turned off, no clock pulses are
supplied.
Character display on/off control bit
This bit is used to turn character display on or off. Character display is turned on or off upon the detection of a
falling edge of Hsync.
(LSB)
(MSB)
D0
D1
D2
D3
D4
D5
D6
D7
BL0
BL1
LC
DO
1
0
0
0
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| UPD6464A | ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD6462 | 制造商:NEC 制造商全稱:NEC 功能描述:CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS |
| UPD6462GS | 制造商:NEC 制造商全稱:NEC 功能描述:CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS |
| UPD6464A | 制造商:NEC 制造商全稱:NEC 功能描述:ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR |
| UPD6464ACS | 制造商:NEC 制造商全稱:NEC 功能描述:ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR |
| UPD6464AGT | 制造商:NEC 制造商全稱:NEC 功能描述:ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR |
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