HT1647A

www.DataSheet.co.kr HT1647A 64´16 LCD Controller for I/O MCU PATENTED PAT No. : TW 099352 Technical Document · Application Note Features · Operating voltage: 2.7V~5.2V · Built-in 32kHz RC oscillator · External 32.768kHz crystal oscillator or 32kHz · Eight kinds of time base/WDT selection · Time base or WDT overflow output · R/W address auto increment · Built-in buzzer driver (2kHz/4kHz) · Power down command reduces power consumption · Software configuration feature · Data mode and Command mode instructions · Three data accessing modes · Provides VLCD pin to adjust LCD operating voltage · Provides three kinds of bias current programming · Control of TN-type, STN-type LCDs and frequency source input · Standby current: <1mA at 3V, <2mA at 5V · Internal resistor type: 1/5 bias or 1/4 bias, 1/16 duty · Two selectable LCD frame frequencies: 89Hz or 170Hz · Max. 64´16 patterns, 64 segments and 16 commons · Built-in bit-map display RAM: 1024 bits (=64´16 bits) · Built-in internal resistor type bias generator · Six-wire interface (four data wires) ECB-type LCDs · 100-pin LQFP package and in chip form Applications · Leisure products · Games · Personal digital assistant · Cellular phone · Global positioning system · Consumer electronics General Description HT1647A 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 1024 patterns (64 segments and 16 commons). It also supports four data bits i...