STLED316SMTR SO-24 Serial-interfaced 6-digit LEDcontroller

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 8×2
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.

Features
¦ LED driver with 14 outputs
(8 segments/6 digits)
¦ 40 mA load current capability for each segment
¦ Output pins connected directly to the LEDs or
can be open-drain
¦ Key-scanning (8 x 2 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
¦ 5.0 V (± 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