STLED316SMTR datasheet(1/33 Pages) STMICROELECTRONICS

部件名	STLED316SMTR

功能描述	Serial-interfaced 6-digit LED controller with keyscan

PDF	33 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 33 page

January 2008

Rev 1

1/33

33

STLED316S

Serial-interfaced 6-digit LED controller with keyscan

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

Applications

■ Set-top-boxes

■ White goods

■ Home appliances

■ DVD players and VCRs

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 re-

writing 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 numeric-

type 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.

SO-24

Table 1.

Device summary

Part number

Package

Packaging

STLED316SMTR

SO-24

Tape and reel

www.st.com

类似零件编号 - STLED316SMTR

制造商	部件名	数据表	功能描述
STMicroelectronics	STLED316SMTR	82Kb / 4P	Serial-Interfaced 6-Digit LED controller with key scan 07-Feb-2007

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