STLED316S

Active

Serial-interfaced 6-digit LED controller with keyscan

Download datasheet Order Direct

Product overview

Description

The STLED316S is a compact LED controller and driver that interface microprocessors to LED displays through a serial 3-wire interface. It drives LED connected in common anode configuration.

The STLED316S drives up to 48 discrete LEDs in 8 segment/6 digit configuration while functioning from a supply voltage of 5.0V. Additionally it can be used to drive 8 discrete LEDs which form a part of LED digit. The individual LEDs are wired as segments of a digit and brightness of these individual LEDs can be controlled digitally. The maximum segment current for the display digits is set through a single external resistor. Individual digits may be addressed and updated without rewriting the entire display.

Additionally it includes key scanning for an 8x2 key matrix which automatically scans a matrix of up to 16 switches. STLED316S supports numerictype displays and reduces the overall BOM costs through high integration. Also it provides ESD protection of greater than 4 kV HBM.

The LED controller/driver is ideal as a peripheral device to interface the display with a singlechip microcomputer.

  • All features

    • A single LED digit output (DIG1_LED) can be used to drive up to 8 discrete LEDs
    • Inputs with Schmitt trigger give superior noise immunity
    • 5.0 V (± 10%) for VCC
    • 8-step dimming circuit to control brightness of individual LEDs for LED digit
    • Built-in power on reset and soft-start circuits
    • Drives common-anode LED digits
    • -40 °C to 85 °C operating temperature range
    • Available in SO24 package
    • 8-step dimming circuit to control the overall display brightness
    • 3-wire serial bus interface (CLK, STB, DIN/DOUT)
    • LED driver with 14 outputs (8 segments/6 digits)
    • Output pins connected directly to the LEDs or can be open-drain
    • 40 mA load current capability for each segment
    • Low power consumption in standby mode
    • Single external resistor for output current setting
    • Key-scanning (8 x 2 matrix)

Circuit Diagram

The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.
Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.
The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.
Budgetary PriceMarketing description of the package type.Storage method used to contain product.Main country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.The value as specified by level (minTypMax) of the ambient temperature (in Cel) in which this item was designed to operate.