DATASHEET ICM7243 FN3162 Rev 5.00 8-Character, Microprocessor-Compatible, LED Display Decoder Driver October 2, 2015 The ICM7243 is an 8-character, alphanumeric display driver Features and controller which provides all the circuitry required to 14-Segment and 16-Segment Fonts with Decimal Point interface a microprocessor or digital system to a 14-segment or 16-segment display. It is primarily intended for use in Mask Programmable for Other Font-Sets Up to 64 microprocessor systems, where it minimizes hardware and Characters software overhead. Incorporated on-chip are a 64-character Microprocessor Compatible ASClI decoder, 8x6 memory, high power character and Directly Drives LED Common Cathode Displays segment drivers, and the multiplex scan circuitry. Cascadable Without Additional Hardware 6-bit ASCll data to be displayed is written into the memory directly from the microprocessor data bus. Data location Standby Feature Turns Display Off Puts Chip in Low depends upon the selection of either Sequential Power Mode (MODE = 1) or Random access mode (MODE = 0). In the Sequential Entry or Random Entry of Data Into Display Sequential Access mode the first entry is stored in the Single +5V Operation lowest location and displayed in the left-most character position. Each subsequent entry is automatically stored in Character and Segment Drivers, All MUX Scan Circuitry, the next higher location and displayed to the immediate 8x6 Static Memory and 64-Character ASCll Font right of the previous entry. A DISPlay FULL signal is Generator Included On-Chip provided after 8 entries this signal can be used for Pb-Free Available (RoHS Compliant) cascading devices together. A CLeaR pin is provided to clear the memory and reset the location counter. The Random Access mode allows the processor to select the memory address and display digit for each input word. The character multiplex scan runs whenever data is not being entered. It scans the memory and CHARacter drivers, and ensures that the decoding from memory to display is done in the proper sequence. Intercharacter blanking is provided to avoid display ghosting Ordering Information PART PART TEMP. RANGE PACKAGE PKG. NUMBER MARKING (C) (Pb-Free) DWG. ICM7243BlPL** (No longer available or ICM7243BlPL -25 to +85 40 Ld PDIP E40.6 supported) ICM7243BlPLZ ** (Note) ICM7243BlPLZ -25 to +85 40 Ld PDIP E40.6 ICM7243AIM44Z* (Note) (No longer ICM7243 AIM44Z -25 to +85 44 Ld MQFP Q44.10x10 available, recommended replacement: ICM7244AIM44Z, ICM7244AIM44ZT) ICM7243AIPLZ** (Note) (No longer available ICM7243AIPLZ -20 to +85 40 Ld PDIP E40.6 or supported) *Add -T suffix for tape and reel. Please refer to TB347 for details on reel specifications. **Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 FN3162 Rev 5.00 Page 1 of 17 October 2, 2015ICM7243 Pinouts ICM7243A (16-SEGMENT CHARACTER) (40 Ld PDIP) TOP VIEW V 1 40 SEG l DD SEG m 2 39 SEG g2 SEG e 3 38 SEG b SEG g1 4 37 SEG i SEG k 5 36 SEG f SEG c 6 35 SEG d2 SEG d1 7 34 D.P. SEG a1 8 33 SEG h SEG a2 9 32 SEG j D0 10 31 MODE 11 D1 30 A0/SEN D2 12 29 A1/CLR D3 13 28 A2/DISP FULL D4 14 27 OSC/OFF D5 15 26 CHAR 1 CS 16 25 CHAR 2 WR 17 24 CHAR 3 CHAR 8 18 23 CHAR 4 CHAR 7 19 22 V SS CHAR 6 20 21 CHAR 5 FN3162 Rev 5.00 Page 2 of 17 October 2, 2015