MSM6544 Datasheet | OKI Electric

DESCRIPTION The MSM6544 is a 42-segment duplex driver which can drive the LCD panel up to a maximum of 84 segments. Since the package is a 56-pin small QFP, an LCD module can be pactly configured. An internal RC oscillator is provided for ease of use. .. FEATURES - - - - - - Power supply voltage (VDD) : 3 to 6V LCD driving voltage : 3 to VDD Operating temperature : - 40 to +85°C Applicable LCD panel : 1/2 duty, 84 segments (Max) Data transmitting clock : 4 MHz (Max) Package: 56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product name : MSM6544GS-2K) BLOCK DIAGRAM SEG1 SEG42 BLANK VDD1 VDD2 GND 42-DOT SEGMENT DRIVER 42-BIT SELECTOR <A> L 42-BIT LATCH LOAD <B> L 42-BIT LATCH DATA CLOCK OSC-IN OSC-C OSC-R 42-BIT SI/PO MON DRIVER -A -B VLCM VLCL 1/32 1/12 ¡ Semiconductor PIN CONFIGURATION (TOP VIEW) .. SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 VDD2 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 42 41 40 39 38 37 36 35 34 33 32 31 30 29 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 OSC-IN OSC-C OSC-R LOAD DATA CLOCK VDD1 BLANK GND VLCL -A VLCM -B SEG1 56-Pin Plastic QFP 2/12 ¡ Semiconductor PIN DESCRIPTIONS - OSC-IN, OSC-C, OSC-R An RC oscillator circuit for 3-pin type can be configured. Since the OSC-IN pin is in a high input impedance state, it is susceptible to noise. - DATA-IN This is the display data input. When this pin is at "H" level, the segments are turned on and when at "L" level, the segments are turned off. - CLOCK Pin for clocking display data in. Display data is shifted on the rising edge of the clock...