LC74784 View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC74784 Datasheet PDF : 17 Pages
| |||
LC74784, 74784M
COMMAND4 (Display control setup command)
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
TSTMOD
RAMERS
OSCSTP
SYSRST
State
1
1
0
0
0
1
Register content
Function
Command 4 identification code
Display control
Normal operating mode
Test mode
0
1 Erase display RAM (set to FF hexadecimal)
0 Do not stop the crystal oscillator and LC oscillator circuits.
1 Stop the crystal oscillator and LC oscillator circuits.
0
1 Reset all registers and turn the display off.
Note
This bit must be zero.
The RAM erase operation requires about
500 µs (It is executed in the DSPOFF
state.)
Valid when character display is off in
external synchronization mode.
Reset occurs when the CS pin is low, and
the reset is cleared when CS goes high.
Second byte
DA0 to DA7
7
6
5
4
3
Register name
—
BLK2
BLK1
BLK0
BK1
State
0
0
1
0
1
0
1
0
1
Register content
Function
Second byte identification bit
Character display block
Video display block
BLK1
BLK0
0
0
Blanking off
1
Border size
Blinking period: about 0.5 s
Blinking period: about 1.0 s
1
Character size
Full character size
0 Blinking off
2
BK0
1 Blinking on
0 Reverse (character reversing) off
1
RV
1 Reverse (character reversing) on
0 Character display off
0
DSPON
1 Character display on
Note: The register states are all set to zero when the LC74784/M is reset with the RST pin.
Note
Full character size specification
Changes the blanking size.
Switches the blinking period.
When blinking is specified for reversed
characters, the blinking will be between
normal character and reversed character
display.
No. 4991-11/15
Share Link: 