27 VFD Display for Set Top Box HT16523 Characteristics VDD = 5.0V ( Full Range : 2.7V ~ 5.5V ) VH = 32V ( Maximum : 40V ) 3-Wire Serial Interface Display Content : CGROM ( 57 Dot ) : 248 Characters CGRAM ( 57 Dot ) : 8 Characters ADRAM ( Symbol Data ) : 16 Digits 2 Bits DDRAM ( Character Data Registers ) : 16 Digits 8 Bits General Output Port : 2 Bits for LED Internal Oscillator Circuit Display Output : 57 Dot 16 Digits & 2 General Outputs Two Standard Fonts Customized ROM Acceptable Application Areas Application Circuit RST signal is an external input from a MCU etc.