MSC7128 Datasheet, PDF (16/27 Pages) OKI electronic componets – 5 x 7-Dot Character x 16-Digit Display Controller/Driver

¡ Semiconductor
MSC7128-xx
Display Duty Set Command
Assuming the original oscillation cycle as T, the time allocated to 1-digit display is 64T. The actual
display time may be specified as 0 to 60T in increments of 4T. Assuming the number of display
digits as n and the parameter provided by the Display Duty Set command as DC, the resultant
display duty cycle ratio is as follows:
4 (DC)
64n
=
(DC)
16n
Command format
LSB
1
0
1
0
X
X
X
X 1st byte
LSB
X
X
X
X
DG3 DG2 DG1 DG0 2nd byte
DC value (0 to 15)
Lamp Test Command
This command is used to set the All-Segment Display mode. If this occurs, the 36 segments for
each digit to be displayed are put into the ON state. The number of display digits and the display
duty cycle depend on the contents of the digit count register and of the duty register.
The contents of the internal RAM are not affected by this command. When the command is
released, the original display appears once again.
Command format
LSB
1
1
0
0
X
X
X
X ^{1st byte}
LSB
X
X
X
X
X
X
X
LT ^{2nd byte}
0: Normal mode
1: Lamp test mode
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