STLED316S Serial-Interfaced 6-Digit LED controller with key scan Data Brief Features ■ LED driver with 14 outputs (8 segments / 6 digits) ■ 40mA load current capability for each segment ■ Outputs connect directly to the LEDs or can be open-drain ■ Key-scanning (8x2 matrix) ■ Low power consumption in standby mode ■ 3-wire Serial Bus Interface (CLK, STB, DIN/DOUT) ■ 8-step dimming circuit to control the overall display brightness ■ Single external resistor for output current setting ■ Inputs with Schmitt trigger give superior noise immunity ■ A single LED digit output (DIG1_LED) can be used to drive up to 8 discrete LEDs ■ 8-step dimming circuit to control brightness of individual LEDs for LED digit ■ 5.0V (± 10%) for VCC ■ Drives common-anode LED digits ■ Built-in power on reset and soft-start circuits ■ Available in SO24 package ■ -40°C to 85°C operating temperature range SO-24 Description The STLED316S is a compact LED controller and driver that interface microprocessors to LED displays through 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 2kV HBM. Applications ■ Set Top Boxes ■ White goods ■ Home appliances ■ DVD players, VCRs The LED controller/driver is ideal as a peripheral device to interface the display with a singlechip microcomputer. Order codes Part number Temperature range Package Packaging STLED316SMTR -65 to +150 °C SO-24 250 parts per reel February 2007 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 Package mechanical data STLED316S Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com SO-24 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 2.35 2.65 0.093 0.104 A1 0.1 0.30 0.004 0.012 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.013 D 15.20 15.60 0.598 0.614 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10.00 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 L 0.4 1.27 0.016 0.050 k 0° 8° 0° 8° ddd 0.100 0.004 0070769C 2/4 STLED316S Revision history Revision history Table 1. Revision history Date Revision 07-Feb-2007 1 Changes First release 3/4 STLED316S Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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