MSC1215-XX OKI [OKI electronic componets], MSC1215-XX Datasheet - Page 11
MSC1215-XX
Manufacturer Part Number
MSC1215-XX
Description
17 x 2 Duplex Driver with Dimming, Keyscan and A/D Converter Function
Manufacturer
OKI [OKI electronic componets]
Datasheet
1.MSC1215-XX.pdf
(22 pages)
- Current page: 11 of 22
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VD
(PWM Input)
¡ Semiconductor
Note: 1. Key scanning from ROW1 to ROW3 is started when any key is pushed down or
Note: 1. Timing shown for analog dimming with a duty cycle of 208/2048 at VK="H".
GRID1
GRID2
SEG1-17
ROW1
ROW2
ROW3
2. 1-bit time=T
released. Scanning will stop when CS turns to "L" from "H", after 2 times of CS pulses
and the transfer of display data.
90%
50%
10%
2048-bit times
208-bit times max.
Figure 6. SEG-GRID output Timing (Dark Mode)
t
r
OSC
(=4/f
Keyscan Cycle Time
1 Frame Cycle f
4096-bit times
Figure 7. PWM Waveform
Figure 8. Keyscan Timing
OSC
)=1.2 s typical.
t
PW
Keyscan Pulse Width
FR
T
t
f
MSC1215-xx
11/22
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