MAX6952

19-2437; Rev 1; 10/02 KIT ATION EVALU E L B AVAILA 4-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 ✕ 7 Matrix LED Display Driver General Description 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 CathodeRow 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 MAX6952 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, multiplex 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 brightness control. The device includes a low-power shutdown mode, segment 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. Applications Message B...