SC230 SILAN [Silan Microelectronics Joint-stock], SC230 Datasheet - Page 10

• Manufacturer Part Number: SC230
• Description: GENERAL 32X3 SEG LCD DISPLAY DRIVER WITH 1/3 DUTY
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

KEY DATA PROCESS
1 Suppose that the host receives the key data in normal period
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
t7: t7=t5+ t4+LCD transmission time
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
t8: t8= t4+LCD transmission time
HANGZHOU MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
(fx = system clock)
(fx = system clock)
T =2
T =2
13
13
/fx
/fx
REV:1.4
Page 10 of 14
2004.08.03
SC230