MAX6954AAX集成電路（IC）的顯示驅動器規(guī)格書PDF中文資料

General Description

The MAX6954 is a compact display driver that interfaces microprocessors to a mix of 7-segment, 14-segment, and 16-segment LED displays through an SPI?- or QSPI?-compatible 4-wire serial interface. The serial interface may be cascaded through multiple devices. The MAX6954 drives up to 16 digits 7-segment, 8 digits 14-segment, 8 digits 16-segment, or 128 discrete LEDs, while functioning from a supply voltage as low as 2.7V. The driver includes five I/O expander (or GPIO) lines, some or all of which may be configured as a key switch reader, which automatically scans and debounces a matrix of up to 32 switches.

Features

? High-Speed 26MHz SPI/QSPI/MICROWIRE?-Compatible Serial Interface

? 2.7V to 5.5V Operation

? Drives Up to 16 Digits 7-Segment, 8 Digits 14-Segment, 8 Digits 16-Segment, 128 Discrete LEDs, or a Combination of Digit Types

? Drives Common-Cathode Monocolor and Bicolor LED Displays

? Built-In ASCII 104-Character Font for 14-Segment and 16-Segment Digits and Hexadecimal Font for 7-Segment Digits

? Automatic Blinking Control for each Segment

? 10μA (typ) Low-Power Shutdown (Data Retained)

? 16-Step Digit-by-Digit Digital Brightness Control

? Display Blanked on Power-Up

? Slew-Rate Limited Segment Drivers for Lower EMI

? Five GPIO Port Pins Can Be Configured as Key Switch Reader to Scan and Debounce Up to 32 Switches with n-Key Rollover

? IRQ Output when a Key Input Is Debounced

? 36-Pin SSOP and 40-Pin DIP and TQFN Packages

? Automotive Temperature Range Standard

Applications

? Set-Top Boxes

? Automotive

? Panel Meters

? Bar Graph Displays

? White Goods

? Audio/Video Equipment

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