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| SC230 Datasheet, PDF (10/13 Pages) Silan Microelectronics Joint-stock – GENERAL 32X3 SEG LCD DISPLAY DRIVER WITH 1/3 DUTY | |||
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KEY DATA PROCESS
1ËSuppose that the host receives the key data in normal period
SC230
t3: Key scan time (8T)⦠..The data of the two key scan is different(new key data and already exist data)
t4: Key scan time(16T)⦠The data of the two key scan is the same(new key data and already exist data)
t5: Key address(43H)transmission time
t6: Key data transmission time
T =213/fx
t7: t7=t5+ t4+LCD transmission time
(fx = system clock)
2. Suppose that the host receives key data by interrupt
t3: Key scan time (8T)⦠..The data of the two key scan is different(new key data and already exist data)
t4: Key scan time(16T)⦠The data of the two key scan is the same(new key data and already exist data)
t5: Key address(43H)transmission time
t6: Key data transmission time
T =213/fx
t8: t8= t4+LCD transmission time
(fx = system clock)
HANGZHOU MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.4 2004.08.03
Page 10 of 14
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