MAX6955AAX+

The MAX6955 is a compact display driver that interfaces microprocessors to a mix of 7-segment, 14-segment, and 16-segment LED displays through an I2C-compatible 2-wire serial interface.
The MAX6955 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 general-purpose I/O (GPIO) lines, some or all of which can be configured as a key-switch reader.
The key-switch reader automatically scans and debounces a matrix of up to 32 switches.Benefits and
Features● Simplifies Driving 5 x 7 Matrix LED Displays
• Drives Common-Cathode Monocolor and Bicolor LED Displays
• Drives Up to 16 Digits 7-Segment, 8 Digits 14-Segment, 8 Digits 16-Segment, 128 Discrete LEDs, or a Combination of Digit Types
• 2.7V to 5.5V Operation● Standard 2-Wire Interface Supports a Variety of Microprocessor Architectures
• 400kbps 2-Wire I2C-Compatible Interface● Integrated Flexibility Supports Different Application Requirements
• Built-In ASCII 104-Character Font for 14-Segment and 16-Segment Digits and Hexadecimal Font for 7-Segment Digits
• 16-Step Digit-by-Digit Digital Brightness Control
• Display Blanked on Power-Up
• Automatic Blinking Control for Each Segment
• 10µA (typ) Low-Power Shutdown (Data Retained)● 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● Slew-Rate-Limited Segment Drivers for Lower EMI● 36-Pin SSOP and 40-Pin DIP and TQFN Packages● Automotive Temperature Range Standard Covers Usage in Harsh EnvironmentsApplications Set-Top Boxes Bar Graph Displays Panel Meters Audio/Video Equipment White Goods