HT1621B：RAM Mapping 32 4 LCD Contr現個oller for I/O MCU

HT1621B Features Operating voltage: 2.制道4V~5.2V Built-in 2外睡56kHz RC oscillator Externa遠新l 32.768kHz crystal or 256kHz討務 frequency source input Selecti笑筆on of 1/2 or 1 /3 bias, and s場討election of 1/2 or 1/3 or 1 看門/4 duty LCD applicat習窗ions Internal time base frequ生資ency sources Two selectable buzzer f懂鐵requencies (2kHz/4kHz) Power down com下就mand reduces power consumption 關民 Built-in time base gene事頻rator and WDT Time base or WDT ov紙理erflow output 8 kinds of商中 time base/WDT clock s音你ources 32 4 LCD driver
Built-in 32 4 bit display熱村 RAM 3-wire serial interf山有ace Internal LCD driving frequ飛不ency source Software config但體uration feature Data mode and物道 command mode instructions R雜快/W address auto incre請年ment Three data access藍東ing modes VLCD pin for adjustin離場g LCD operating voltage HT1621: 多到48-pin SSOP package HT1621B: 我亮48-pin DIP/SSOP/LQFP package HT1621D: 2樂低8-pin SKDIP package H店舞T1621G: Gold bumped chip
General Description
The HT1621B is a 128 pattern (32 4), memory mappi慢呢ng, and multi-function LCD dr術熱iver. The S/W configuration feature o廠秒f the HT1621 makes it志明 suitable for multip放這le LCD applications including LCD 飛煙modules and display sub
systems. Only three or four lines are r長子equired for the interface between河冷 the host controller and the HT1621B. The HT1621 contains a powe現時r down command to reduce power鐵關 consumption.