MSM5839B

E2B0022-27-Y2 ¡ Semiconductor ¡ Semiconductor MSM5839B 40-DOT SEGMENT DRIVER This version: MSM5839B Nov. 1997 Previous version: Mar. 1996 GENERAL DESCRIPTION The MSM5839B is a dot matrix LCD segment driver LSI which is fabricated using low power CMOS metal gate technology. This LSI consists of two 20-bit shift registers, two 20-bit latches, a 40-bit level shifter and a 40-bit 4-level driver. It converts serial data, which is received from an LCD controller LSI, to parallel data and outputs LCD driving waveform to the LCD panel. Expansion of display can easily be made by increasing the number of characters and character patterns. This LSI can drive a variety of LCD panels because the bias voltage, which determines the LCD driving voltage, can be optionally supplied from the external source. FEATURES Supply voltage : 4.5 to 5.5V LCD driving voltage : 8 to 18V Applicable LCD duty : 1/32 to 1/128 Bias voltage can be supplied externally Applicable common driver : MSM5238 (32 outputs) Package options: 56-pin plastic QFP (QFP56-P-910-0.65-K) (Product name: MSM5839B GS-K) 56-pin plastic QFP (QFP56-P-910-0.65-L2) (Product name: MSM5839B GS-L2) 56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product name: MSM5839B GS-2K) 1/11 ¡ Semiconductor MSM5839B BLOCK DIAGRAM O1 O2 O19 O20 O21 O22 O39 O40 VDD(V1) V2 V3 VEE(V4) 40-Bit 4-Level Driver VDD VEE 40-Bit Level Shifter DF LOAD 20-Bit Latch 20-Bit Latch VDD VSS VSS DI1 CP 20-Bit Shift Register 20-Bit Shift Register DO...