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HT1622 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT1622 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 13 page  HT1622 RAM Mapping 32´8 LCD Controller for I/O MCU Selection Table HT162X HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 COM 44 8 888 16 SEG 32 32 32 32 48 64 48 Built-in Osc. ¾ ÖÖ ¾ ÖÖÖ Crystal Osc. Ö Ö ¾ ÖÖÖÖ Block Diagram Rev. 1.40 1 February 6, 2007 General Description HT1622 is a peripheral device specially designed for I/O type MCU used to expand the display capability. The max. display segment of the device are 256 patterns (32 ´8). It also supports serial interface, buzzer sound, Watchdog Timer or time base timer functions. The HT1622 is a memory mapping and multi-function LCD controller. The software configuration feature of the HT1622 make it suitable for multiple LCD applications including LCD modules and display subsystems. Only three lines are required for the interface between the host controller and the HT1622. The HT162X series have many kinds of products that match various applica- tions. Features · Operating voltage: 2.7V~5.2V · Built-in RC oscillator · 1/4 bias, 1/8 duty, frame frequency is 64Hz · Max. 32´8 patterns, 8 commons, 32 segments · Built-in internal resistor type bias generator · 3-wire serial interface · 8 kinds of time base or WDT selection · Time base or WDT overflow output · Built-in LCD display RAM · R/W address auto increment · Two selectable buzzer frequencies (2kHz or 4kHz) · Power down command reduces power consumption · Software configuration feature · Data mode and Command mode instructions · Three data accessing modes · VLCD pin to adjust LCD operating voltage · Cascade application · 64-pin QFP package W a t c h d o g T i m e r a n d T i m e B a s e G e n e r a t o r D i s p l a y R A M L C D D r i v e r / B i a s C i r c u i t C o n t r o l a n d T i m i n g C i r c u i t D A T A W R O S C I C S R D C O M 0 C O M 7 S E G 0 S E G 3 1 T o n e F r e q u e n c y G e n e r a t o r B Z B Z I R Q V S S V D D V L C D |
Similar Part No. - HT1622_07 |
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Similar Description - HT1622_07 |
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