MAX6955ATL+

The MAX6955ATL+ is a 2-wire interfaced, 2.7V to 5.5V LED display driver with I/O expander and key scan in 40 pin TQFN package. This compact display driver interfaces microprocessors to a mix of 7-segment, 14-segment and 16-segment LED displays through an I2C compatible 2-wire serial interface. The IC 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 which automatically scans and debounces a matrix of up to 32 switches. It is used in set-top boxes, panel meters, white goods and bar graph displays.

• Simplifies driving 5 x 7 matrix LED displays, drives common cathode monocolour, bicolour LED display
• Standard 2-wire interface supports a variety of microprocessor architectures
• 400Kbps 2-wire I2C compatible interface
• Operating temperature range from -40°C to 125°C
• Integrated flexibility supports different application requirements, display blanked on power-up
• Built-in ASCII 104-character font for 14-segment & 16-segment digits
• Slew-rate-limited segment drivers for lower EMI, hexadecimal font for 7-segment digits
• 10µA (typ) low-power shutdown (data retained), IRQ output when a key input is debounced
• 16-step digit-by-digit digital brightness control, automatic blinking control for each segment
• Automotive temperature range standard covers usage in harsh environments

Notas

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party