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MAX6951CEE Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX6951CEE Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 19 page General Description The MAX6950/MAX6951 are compact common-cath- ode display drivers that interface microprocessors to individual 7-segment numeric LED digits, bar graph, or discrete LEDs through an SPI™-, QSPI™-MICROWIRE™- compatible serial interface. The supply voltage can be as low as 2.7V. The MAX6950 drives up to five 7-segment digits or 40 discrete LEDs. The MAX6951 drives up to eight 7-seg- ment digits or 64 discrete LEDs. Included on-chip are hexadecimal character decoders (0–9, A–F), multiplex scan circuitry, segment and digit drivers, and a static RAM that stores each digit. The user may select hexadecimal decoding or no-decode for each digit to allow any mix of 7-segment digits, bar graph, or discrete LEDs to be driven. The segment cur- rent for the LEDs is set by an internal digital brightness control. The segment drivers are slew-rate limited to reduce EMI. Individual digits may be addressed and updated with- out rewriting the entire display. The devices include a low-power shutdown mode, digital brightness control, a scan-limit register that allows the user to display from one to eight digits, segment blinking that can be syn- chronized across drivers, and a test mode that forces all LEDs on. Applications Set-Top Boxes Panel Meters White Goods Bar Graphs and Matrix Displays Industrial Controllers and Instrumentation Professional Audio Equipment Medical Equipment Features ♦ High-speed 26MHz SPI-, QSPI-, MICROWIRE- Compatible Serial Interface ♦ +2.7V to +5.5V Operation ♦ Individual LED Segment Control ♦ Segment Blinking Control that Can Be Synchronized Across Multiple Drivers ♦ Hexadecimal Decode/No-Decode Digit Selection ♦ Digital Brightness Control ♦ Display Blanked on Power-Up ♦ Drives Common-Cathode LED Digits ♦ Multiplex Clock Syncronizable to External Clock ♦ Slew-Rate Limited Segment Drivers for Low EMI ♦ 75µA Low-Power Shutdown (Data Retained) ♦ Small 16-Pin QSOP Package Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers ________________________________________________________________ Maxim Integrated Products 1 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 DIN V+ (DIG6)/SEG6 DIG4/SEG4 (DIG5)/SEG5 (DIG7)/SEG7 SEG8 OSC TOP VIEW MAX6950 MAX6951 QSOP CS CLK DIG3/SEG3 DIG0/SEG0 DIG2/SEG2 DIG1/SEG1 ISET GND ( ) MAX6951 ONLY Pin Configuration 19-2227; Rev 2; 3/05 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information PART TEMP RANGE PIN-PACKAGE MAX6950CEE 0°C to +70°C 16 QSOP-EP* MAX6950EEE -40°C to +85°C 16 QSOP-EP* MAX6951CEE 0°C to +70°C 16 QSOP-EP* MAX6951EEE -40°C to +85°C 16 QSOP-EP* Functional Diagram appears at end of data sheet. Typical Application appears at end of data sheet. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. *EP = Exposed pad. |
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