MSC1215 查看數據表（PDF） - Oki Electric Industry

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MSC1215

17 x 2 Duplex Driver with Dimming, Keyscan and A/D Converter Function

Oki Electric Industry 

¡ Semiconductor

MSC1215-xx

GRID1

GRID2

1 Frame Cycle fFR

4096-bit times

2048-bit times

208-bit times max.

SEG1-17

Figure 6. SEG-GRID output Timing (Dark Mode)

Note: 1. Timing shown for analog dimming with a duty cycle of 208/2048 at VK="H".

2. 1-bit time=TOSC (=4/fOSC)=1.2 µs typical.

90%

VD

(PWM Input)

50%

10%

tr

tf

tPW

T

Figure 7. PWM Waveform

ROW1

ROW2

Keyscan Cycle Time

Keyscan Pulse Width

ROW3

Figure 8. Keyscan Timing

Note: 1. Key scanning from ROW1 to ROW3 is started when any key is pushed down or

released. Scanning will stop when CS turns to "L" from "H", after 2 times of CS pulses

and the transfer of display data.

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