ICM7244 INTERSIL [Intersil Corporation], ICM7244 Datasheet
ICM7244
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ICM7244 Summary of contents
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... Data Sheet 8-Character, Microprocessor Compatible, LED Display Decoder Driver The ICM7244 is an 8-character, alphanumeric display driver and controller which provides all the circuitry required to interface a microprocessor or digital system to a 16-segment display with internal pull-up resistors primarily intended for use in microprocessor systems, where it minimizes hardware and software overhead ...
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... Pinout SEG SEG SEG 2 ICM7244 ICM7244 ICM7244 (16-SEGMENT CHARACTER) (44 LD MQFP) TOP VIEW SEG SEG h 31 SEG j 30 ...
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... Functional Block Diagram DATA INPUT MODE D SEL A0/SEN A1/CLR MUX A2/DISP FULL OSC/OFF 3 ICM7244 ICM7244 8x6 DATA DATA D0 D LATCHES MEMORY CLR CL CL ADR ONE 8 SHOT ADDRESS LATCHES SEQUENTIAL SEQUENTIAL CONTROL ADDRESS LATCH 3 COUNTER ...
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... C lN Output Capacitance Sequential mode WR high must be ≥ For design reference only, not tested. 4 ICM7244 ICM7244 Thermal Information Thermal Resistance (Typical, Note 0.3V MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . DD SS Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www ...
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... DISPLAY FULL FIGURE 2. SEQUENTIAL ACCESS MODE TIMING (MODE = 1) INTERNAL INTER-CHARACTER BLANKING SIGNAL CHAR 1 CHAR 2 CHAR 3 CHAR 4 CHARACTERS DRIVE SIGNALS CHAR 5 CHAR 6 CHAR 7 CHAR 8 FIGURE 3. DISPLAY CHARACTERS MULTIPLEX TIMING DIAGRAM 5 ICM7244 ICM7244 VALID WPI WRITE DATA VALID FIGURE 1 ...
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... CHAR2, CHAR1 6 ICM7244 ICM7244 6-Bit ASCll Data input pins (active high). Chip Select from µP address decoder, etc. WRite pulse input pin (active low). For an active high write pulse, CS can be used. Selects data entry MODE. High selects Sequential Access (SA) mode where first entry is displayed in “ ...
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... Test Circuit SEG d1 SEG a1 SEGMENTS SEG ICM7244 ICM7244 17 SEGMENTS CHAR 8 CHAR 7 CHAR 6 CHAR 5 CHAR 4 CHAR 3 CHAR 2 CHAR 1 SEGMENTS ...
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... FULL BIT BUS + SEN ICM7244 DISP FULL CLR CHAR SEG 8 CHARACTERS 8 CHARACTERS CHAR SEG CLR CS ICM7244 DISP SEN FULL ETC + SEN ETC. ICM7244 DISP FULL CLR CHAR SEG 8 CHARACTERS January 22, 2009 ...
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... CLR CLR CHAR +5V SEN DISP FULL +5V MODE DATA 6 BUS WR CS, (WR) FIRST 8 CHARACTERS NOTE: 17 for ICM7244. FIGURE 6. MULTICHARACTER DISPLAY USING SEQUENTIAL ACCESS MODE +5V +5V 617Ω 1mA 2N2219 SEG ICM7244 14Ω (100mA CHAR 14mA r = 4Ω 2N6034 ON GND GND FIGURE 7A. COMMON CATHODE DISPLAY ...
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... CHARACTERS 8 CHARACTERS ICM7244 ICM7244 ...
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... CLR input is asynchronous, and will force-clear the Sequential Address Counter to address 000 (CHARacter 1), and set all Data Memory contents to 100000 (blank) at any time. The DISPlay FULL output will be active in SA mode to indicate the overflow status of the Sequential 11 ICM7244 ICM7244 (Continued SEGMENT DRIVER ...
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... Thus a display connected to the output may be driven by another circuit (including another ICM7244) without driver conflicts. Display Output The output of the Multiplex Counter is decoded and multiplexed into the address input of the Data Memory, ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 13 ICM7244 ICM7244 Q44.10x10 44 LEAD METRIC PLASTIC QUAD FLATPACK PACKAGE -D- SYMBOL ...