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MAX6952 Datasheet(Hoja de datos) 1 Page - Maxim Integrated Products |
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4-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 ✕ 7 Matrix LED Display Driver ________________________________________________________________ Maxim Integrated Products 1 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. General Description The MAX6952 is a compact cathode-row display driver that interfaces microprocessors to 5 ✕ 7 dot-matrix LED displays through an SPI™-compatible serial interface. The MAX6952 drives up to four digits (140 LEDs). Included on chip are an ASCII 104-character font, mul- tiplex scan circuitry, column and row drivers, and static RAM that stores each digit, as well as font data for 24 user-definable characters. The segment current for the LEDs is set by an internal digit-by-digit digital bright- ness control. The device includes a low-power shutdown mode, seg- ment blinking (synchronized across multiple drivers, if desired), and a test mode that forces all LEDs on. The LED drivers are slew rate limited to reduce EMI. For a 2-wire interfaced version, refer to the MAX6953 data sheet. An EV kit is available for the MAX6952. Features o High-Speed 26MHz with SPI-/QSPI-™/ MICROWIRE™-Compatible Serial Interface o 2.7V to 5.5V Operation o Drives Four Monocolor or Two Bicolor Cathode- Row 5 ✕ 7 Matrix Displays o Built-In ASCII 104-Character Font o 24 User-Definable Characters Available o Automatic Blinking Control for Each Segment o 36µA Low-Power Shutdown (Data Retained) o 16-Step Digital Brightness Control o Display Blanked on Power-Up o Slew-Rate-Limited Segment Drivers for Lower EMI o 36-Pin SSOP and 40-Pin DIP Packages Ordering Information DIGIT 1 R1 R6 R7 C1 R4 R3 R2 R5 C2 C3 C5 C4 DIGIT 0 O0 O1 O2 O3 O4 O5 O6 O14 O15 O16 O17 O18 R1 R6 R7 C1 R4 R3 R2 R5 C2 C3 C5 C4 O0 O1 O2 O3 O4 O5 O6 O19 O20 O21 O22 O23 R1 R6 R7 C1 R4 R3 R2 R5 C2 C3 C5 C4 O7 O8 O9 O10 O11 O12 O13 O14 O15 O16 O17 O18 R1 R6 R7 C1 R4 R3 R2 R5 C2 C3 C5 C4 DIGIT 3 O7 O8 O9 O10 O11 O12 O13 O19 O20 O21 O22 O23 DIGIT 2 3.3V 100nF 47 µF O0 O1 O2 O3 O4 O5 O6 O7 O8 O9 O10 O11 O12 O13 O14 O15 O16 O17 O18 O19 O20 O21 O22 O23 ISET OSC V+ V+ GND GND CS GND DIN CLK DOUT CSET 26pF RSET 53.6k Ω MAX6952 BLINK 3.3V 4.7k Ω Typical Application Circuit 19-2437; Rev 1; 10/02 EVALUATION KIT AVAILABLE PART TEMP RANGE PIN-PACKAGE MAX6952EAX -40°C to +85°C 36 SSOP MAX6952EPL -40°C to +85°C 40 PDIP SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Pin Configurations appear at end of data sheet. Message Boards Medical Equipment Industrial Displays Audio/Video Equipment Gaming Machines Applications |
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