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OM4068H Datasheet(PDF) 11 Page - NXP Semiconductors |
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OM4068H Datasheet(HTML) 11 Page - NXP Semiconductors |
11 / 28 page 1998 Jun 18 11 Philips Semiconductors Product specification LCD driver for low multiplex rates OM4068 1:2MULTIPLEX DRIVE MODE When two backplanes are provided in the LCD, the 1 : 2 multiplex mode applies, as shown in Fig.6. 1:3MULTIPLEX DRIVE MODE When three backplanes are provided in the LCD, the 1 : 3 multiplex mode applies, as shown in Fig.7. MBK820 VLCD 1/2VLCD BP1 BP2 VSS Tframe SEG - BP1 SEG - BP2 Tframe Tframe 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD VLCD 1/2VLCD VSS SEG N SEG N + 1 SEG N + 2 SEG N + 3 VLCD 1/2VLCD VSS VLCD 1/2VLCD VSS VLCD 1/2VLCD VSS VLCD 1/2VLCD VSS 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD 1/2VLCD VLCD 0 V −1/2VLCD −VLCD Fig.6 Waveforms for 1 : 2 multiplex drive mode (VOP =VLCD − VSS). BACKPLANE DRIVER OUTPUTS SEGMENTS SEG N SEGN+1 SEG N+2 SEGN+3 BP1 off on off on BP2 off off on on |
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