MSC7128-xx

E2C0029-27-Y4 ¡ Semiconductor MSC7128-xx ¡ Semiconductor 5 ¥ 7-Dot Character ¥ 16-Digit Display Controller/Driver This version:MSC7128-xx Nov. 1997 Previous version: Jul. 1996 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 characte...