品牌	台湾合泰	型号	ht1621
封装	ssop-48	批号	10+
类型	驱动IC

features
operating voltage: 2.4v~5.2v
built-in 256khz rc oscillator
external 32.768khz crystal or 256khz frequency
source input
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)
power down command reduces power consumption
built-in time base generator and wdt
time base or wdt overflow output
8 kinds of time base/wdt clock sources

32 4 lcd driver
built-in 32 4 bit display ram
3-wire serial interface
internal lcd driving frequency source
software configuration feature
data mode and command mode instructions
r/w address auto increment
three data accessing modes
vlcd pin for adjusting lcd operating voltage
ht1621b: 48-pin ssop/lqfp packages
ht1621d: 28-pin skdip package
ht1621g: gold bumped chip