Holtek BS82B12A-3 - Page 143

Rev. 1.20 142 January 23, 2015 Rev. 1.20 143 January 23, 2015
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
Theaccompanyingwaveformdiagramshowsatypical1/3BiasLCDwaveformgeneratedusingthe
applicationprogram.Notethatthedepictionofa"1"inthediagramillustratesanilluminatedLCD
pixel.TheCOMsignalpolaritygeneratedonpinsSCOM0~SCOM3,whether0or1,aregenerated
usingthecorrespondingI/Odataregisterbits,whicharebitsPA0~PA2,PA4inthePAregister.
Note:ThelogicalvaluesshowninthediagramarethePAI/Oregisterbitvalues,PA0~PA2,PA4.
1/3 Bias LCD Waveform