sc16313 Silan, sc16313 Datasheet - Page 6

• Manufacturer Part Number: sc16313
• Description: Vfd Controller / Driver
• Manufacturer: Silan

KEY SCANNING AND DISPLAY TIMING
In the first frame, those keys connected to KS1~KS4 are scanned, while the second frame scans KS5~KS8. The
data of the 8 x 2 matrix is stored in the key-input RAM.
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The key scanning and display timing diagram is given below. One cycle of key scanning consists of 2 frames.
Command 4: display control command
diagram below.
This command is used to turn ON or OFF a display. It also used to set the pulse width. Please refer to the
ON power application, the 1/16 pulse width is set and the display is turned OFF (the key scanning starts).
MSB
1
0
Don't
care
-
- b3 b2 b1 b0
Turns on / off display:
0: display OFF
1: display ON
LSB
Diming quantity settings:
000: pulse width = 1/16
001: pulse width = 2/16
010: pulse width = 4/16
011: pulse width = 10/16
100: pulse width = 11/16
101: pulse width = 12/16
110: pulse width = 13/16
111: pulse width = 14/16
REV:1.2
SC16313
Page 6 of 10
2003.08.28