MAX7221CWG

MAX7221CWG 全新原装现货，联系电话：13590238352黄小姐。The MAX7219/MAX7221 are compact, serial input/out-put common-cathode display drivers that interfacemicroprocessors (µPs) to 7-segment numeric LED dis-plays of up to 8 digits, bar-graph displays, or 64 indi-vidual LEDs. Included on-chip are a BCD code-Bdecoder, multiplex scan circuitry, segment and digitdrivers, and an 8x8 static RAM that stores each digit.Only one external resistor is required to set the seg-ment current for all LEDs. The MAX7221 is compatiblewith SPI™, QSPI™, and Microwire™, and has slew-rate-limited segment drivers to reduce EMI.A convenient 3-wire serial interface connects to allcommon µPs. Individual digits may be addressed andupdated without rewriting the entire display. TheMAX7219/MAX7221 also allow the user to select code-B decoding or no-decode for each digit.The devices include a 150µA low-power shutdownmode, analog and digital brightness control, a scan-limit register that allows the user to display from 1 to 8digits, and a test mode that forces all LEDs on