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HT1620 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT1620 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 17 page  HT1620 RAM Mapping 32´4 LCD Controller for I/O mC Selection Table HT162X HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 HT1627 HT16270 COM 4 48 8 8 8 16 16 16 SEG 32 32 32 32 48 64 48 64 64 Built-in Osc. ÖÖ Ö Ö Ö Ö Crystal Osc. ÖÖ Ö Ö Ö Ö Ö 1 July 26, 1999 Features · Logic operating voltage: 2.4V~3.3V · LCD voltage: 3.6V~4.9V · Low operating current <3mAat3V · External 32.768kHz crystal oscillator · Selection of 1/2 or 1/3 bias, and selection of 1/2 or 1/3 or 1/4 duty LCD applications · Internal time base frequency sources · Two selectable buzzer frequencies (2kHz/4kHz) · Built-in capacitor type bias charge pump · Time base or WDT overflow output · 8 kinds of time base/WDT clock source · 32´4 LCD driver · Built-in 32´4-bit display RAM · 3-wire serial interface · Internal LCD driving frequency source · Software configuration feature · R/W address auto increment · Data mode and command mode instructions · Three data accessing modes General Description The HT1620 is a 128 pattern (32´4), memory mapping, and multi-function LCD driver. The S/W configuration feature of the HT1620 makes it suitable for multiple LCD applica- tions including LCD modules and display sub- systems. Only three or four lines are required for the interface between the host controller and the HT1620. The HT1620 consumes low operating current owing to adopting capacitor type bias charge pump. The HT162X series have many kinds of products that match vari- ous applications. |
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