GENERAL DESCRIPTION
The MSC7128-xx is a general purpose display controller for vacuum fluorescent display tube.
The MSC7128-xx drives displays with up to 35 anodes (dots) and up to 16 grids (characters) plus a cursor.
The controller accepts command and display data input words on a clocked serial input line.
Commands control the on/off duty cycle, starting character position, number of characters to display and display modes (PLA mode and Lamp Test mode). An internal PLA-type character generator provides character decoding and dot pattern generation for the full 128 characters. A 35 · 128-bit PLA (ROM) code is programmable.

FEATURES
• Logic supply voltage (VDD) :+5V
• VF driver supply voltage (VEE) :–55V
• Driver output current
    – VF grid driver :–30mA
    – VF anode driver :–2mA
    – VF cursor driver :–10mA
• Direct drive capability for vacuum fluorescent display (no pull-down resistor is required)
• Built-in oscillation circuit
• Built-in power-on-reset circuit with external C
• Serial host interface (data in, clock, chip select)
• Serial data input for 8-bit control and display data words
• Command functions
    – On/off duty cycle : 0/16 to 15/16
    – Character display position : 0 to 15
    – Number of display digits :1 to 16
    – Display modes : PLA mode, and Lamp Test mode
• Built-in 35 x 128-bit PLA-type character generator
    – Character font :5 x 7
    – Number of characters :128
    – Programmable PLA code
• Package options:
    64-pin plastic SDIP (SDIP64-P-750-1.78) (Product name : MSM7128-xxSS)
    64-pin plastic QFP (QFP64-P-1420-1.00-BK) (Product name : MSM7128-xxGS-BK) xx indicates the code number.