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UPD6465CS датащи(PDF) 25 Page - NEC

номер детали UPD6465CS
подробное описание детали  ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR
PDF  52 Pages
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производитель  NEC [NEC]
домашняя страница  http://www.nec.com/
Logo NEC - NEC

UPD6465CS датащи(HTML) 25 Page - NEC

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µPD6464A,6465
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3.5
BUSY Period for Command Input
The BUSY period for command input is distinguished depending on whether a 1-byte, 2-byte, or 2-byte
contiguous command is used.
When inputting 2-byte contiguous command, there are two timings as shown below, (1) Not transferring 2-
byte contiguous command in Vsync period with detecting Vsync and (2) Transferring 2-byte contiguous
command in Vsync period without detecting Vsync.
When inputting commands in succession, observe the following timing:
3.5.1 When inputting 1-byte or 2-byte command
TB1
CLK
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Command continuous
TB1
1-byte or 2-byte command
2.0
µs
input enable time 1
3.5.2 When inputting 2-byte contiguous command
(1) Not transferring 2-byte contiguous command in Vsync period with detecting Vsync (command continuous input
enable time 2 = TB2)
CLK
TB1'
TB2
Parameter
Symbol
Condition
MIN.
TYP. MAX. Unit
Command continuous
TB2
2-byte contiguous command
Display ON TB1’ + (21/fOSC)
× S1 + THWL1
µs
input enable time 2
(= video RAM write command)
Display OFF
TB1’ + (21/fOSC)
× S1
Remark
fOSC
: clock frequency of LC oscillation
S1
: character size
THWL1 : Hsync width
TB1’
≥ 2.0
µs



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