HH1621 driver equivalent, 32 x 4 lcd driver.
_ Operating voltage: 2.2V~5.2V _ Built-in 256kHz RC oscillator _ External 32.768kHz crystal or 256kHz frequency
source input _ Selection of 1/2, 1/3 bias, and selection o.
_ Internal time base frequency sources _ Two selectable buzzer frequencies (2/4kHz) _ Built-in time base generator and W.
The HH1621 is a 128-pattern (32x4), memory mapping, and multi-function LCD driver. The S/W configuration feature of the HH1621 makes it sui.
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