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LC74786JM Scheda tecnica(PDF) 13 Page - Sanyo Semicon Device

Il numero della parte LC74786JM
Spiegazioni elettronici  On-Screen Display Controller
PDF  23 Pages
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Produttore elettronici  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC74786JM Scheda tecnica(HTML) 13 Page - Sanyo Semicon Device

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No. 5729-13/23
LC74786, 74786M, 74786JM
COMMAND4 (Display control setup command)
• First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
—
1
6
—
1
Command 4 identification code
5
—
0
Display character data write setup
4
—
0
3
TSTMOD
0
Normal operating mode
This bit must be set to 0.
1
Test mode
2
RAMERS
0
1
Erase display RAM. (The RAM data is set to FF hexadecimal.)
1
OSCSTP
0
Do not stop the crystal and LC oscillators
1
Stop the crystal and LC oscillators
0
SYSRST
0
1
Reset all registers and turn display off
• Second byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
—
0
Second byte identification bit
6
BLK2
0
Character display area
Specifies the size for complete fill in
1
Video display area
5
BLK1
0
1
Changes the blanking size
4
BLK0
0
1
3
BK1
0
Blinking period: About 0.5 s
Switches the blinking period
1
Blinking period: About 1.0 s
2
BK0
0
Blinking off
1
Blinking on
1
RV
0
Reverse video off
1
Reverse video on
0
DSPON
0
Character display off
1
Character display on
Note: All registers are set to 0 when the LC74786/M/JM is reset by the RST pin.
Blinking in reverse video mode switches the display between
normal character display and reverse video display
Erasing RAM takes about 500 µs. (This operation
must be executed in the DSPOFF state.)
Valid in external synchronization mode when
character display is off
The registers are reset when the CS pin is low, and
the reset state is cleared when CS is set high
BLK0
0
1
BLK1
0
Blanking off
Character size
1
Frame size
Complete fill in



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