Maxim 2 line interface, 2.7V~5.5V LED display driver

It is reported that, Maxim launched 2 wire interface, 2.7V~5.5V LED display driver, its model is "MAX6955".

MAX6955 is a compact display driver, through the I2C compatible 2 wire serial interface microprocessor interface to the 7, 14 and 16 LED display. Serial interface supports multi chip MAX6955 cascade.

The MAX6955 can drive up to 16 bit, 7 bit, 8 bit, 16 bit, 8 bit, or 128 discrete LED, and the supply voltage can be as low as 2.7V. The device also includes 5 I/O extension lines (or GPIO), some or all of which can be configured as a key switch input, auto scan and shake up to 32 matrix switches.

The device contains all 14 segments and 16 segments of 104 ASCII character font, 7 segment display using 16 hexadecimal font, multi scanning circuit, the anode and cathode driver, as well as for the static RAM memory you display. The maximum segment current of the display bit can be set by a single external resistor. The display brightness can be adjusted independently by the 16 level digital brightness control circuit.

Key characteristics

400kbps and I2C compatible 2 line serial interface - working voltage of 2.7V to 5.5V - can control up to 16 7, 8 14, 8 16, paragraph 128 discrete LED, combination of various types of common cathode drive or single or double color LED display - built in 14 section and 16 section 104 a ASCII character font and 7 segment display flashing automatically control the use of 16 hexadecimal font - individually - 10 A (typ) low power shutdown mode (keeping) - digital brightness level 16 of all independent control power on display during the blanking - limit slope segment of the current drive to reduce EMI - 5 port GPIO pin can switch input key configuration, with automatic scanning and to shake up to 32 buttons, and support multi key and press - the automotive temperature range to shake after the key input output IRQ - 36 pin SSOP and 40 pin DIP package in standard

The MAX6955 also contains a low-power shutdown mode, limit the scan (bit register allows the user to select 1 to 16 bit for display), a flicker control (if necessary, can drive synchronization) and forcing all LED light test mode. LED drive appliance Limited slope output to reduce EMI.

Source: LEDinside