General Description
The HT16523 device is a dot matrix Vacuum Fluorescent Display, VFD, controller/driver which displays characters, numerics and symbols. Dot matrix VFD driving signals are received via a 3-line serial interface driven by an externally connected microcontroller. The display data is stored in the internal ROM and RAM for character and symbol display.

Feature
•  Logic voltage: 2.7V~5.5V
•  High voltage: 40V (max.)
•  3-line serial interface
•  Alphanumeric and symbolic display using integrated ROM
•  16 x 8-bit display data RAM (DDRAM)
•  Integrated 5x7 dot ROM containing 248 character set
•  8 user-defned characters stored in character generator RAM (CGRAM)
•  Additional symbol display data stored in 16 x 8-bit RAM (ADRAM)
•  Display content: 16 columns by 1 row + 32 symbols - each column has 1 digit character with 2 symbols
•  Supports display output: 35-segment & 16-grid
•  Supports symbol output: 2-symbol & 16-grid
•  Supports 2-pin general output port - static operation
•  Fully integrated oscillator circuit
•  64-pin LQFP package

Applications
•  Consumer products panel function control
•  Industrial measuring instrument panel function control
•  Other similar application panel function control
•  Suitable for POS terminals or message displays