LC74730M Просмотр технического описания (PDF) - SANYO -> Panasonic
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LC74730M Datasheet PDF : 14 Pages
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LC74730M
} COMMAND 5 (Synchronizing signal control setup command)
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
PH1
PH0
BCL
INT
State
1
1
0
1
Register content
Function
Command 5 identification code
Sets up control of the synchronizing signals
0
PHASE1 PHASE0
1
0
0
0
1
0
1
0
1
1
1
Background color (phase)
π/2
π
3π/2
In phase
0 Background color displayed.
1 No background color (only the background level is set).
0 External synchronization
1 Internal synchronization
Note
Sets the background color
(one of 4 colors).
There is only one background color
(blue) in PAL-M mode.
Valid only in internal synchronization
mode
Switches between internal and external
synchronization.
Second byte
DA0 to DA7 Register name
State
Register content
Function
7
—
0 Second byte identification bit
6
—
0
5
—
0
4
—
0
0
3
SN3
1
SN3 SN2 SN1 SN0 Number of times HSYNC detected
0
0 0 00
Not detected
2
SN2
1
0 0 01
16 times
0
0 0 10
1
SN1
1
0 1 00
0
1 0 00
0
SN0
1
32 times
64 times
128 times
Note: All these registers are set to 0 by a reset due to the RST pin.
Note
External synchronizing signal detection
control
Display Screen Organization
The display screen consists of 10 lines of 24 characters each. Thus the maximum number of characters that can be
displayed is 240 characters. However, the maximum number of characters that can be displayed may be fewer than 240
when characters are enlarged. The display memory address consists of a line address (with values from 0 to 9 decimal),
and a column (character position) address (with values from 0 to 23 decimal).
No. 4247-10/14
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