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MAX6957 - 20-Port and 28-Port LED Display Driver and I/O Expander

General Description

The MAX6957 compact, serial-interfaced LED display driver general-purpose I/O (GPIO) peripheral provides microprocessors with up to 28 ports.

Each port is individually user configurable to either a logic input, logic output, or common-anode (CA) LED constant-current segment driver.

Key Features

  • High-Speed 26MHz SPI-/QSPI™-/.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX695 3.0V/3.3V Microprocessor Supervisory Circuits
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MAX6957 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander General Description The MAX6957 compact, serial-interfaced LED display driver general-purpose I/O (GPIO) peripheral provides microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input, logic output, or common-anode (CA) LED constant-current segment driver. Each port configured as an LED segment driver behaves as a digitally controlled constantcurrent sink, with 16 equal current steps from 1.5mA to 24mA. The LED drivers are suitable for both discrete LEDs and CA numeric and alphanumeric LED digits. Each port configured as a GPIO can be either a pushpull logic output capable of sinking 10mA and sourcing 4.