STLED325 datasheet(1/62 Pages) STMICROELECTRONICS

部件名	STLED325

功能描述	Standby power management to host

PDF	62 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 62 page

April 2011

Doc ID 17576 Rev 1

1/62

62

STLED325

I²C interfaced, advanced LED controller/driver with keyscan,

standby power management and real time clock (RTC)

Features

■ LED controller driver with 13 outputs

(8 segments/5 digits)

■ Standby power management to host

■ Integrated low-power, accurate RTC

■ Integrated remote control decoding:

– Philips (RC5, RCMM)

– Thomson (RCA, R2000)

– NEC and R-STEP

■ Wake-up using front panel keys, remote

control, real time clock (RTC), extra pin (AV or

CEC)

■ Battery or super-cap back up mode for real

time clock (RTC)

■ Keyscanning (8x2 matrix)

■ Low power consumption in standby mode

■ I2C serial bus interface (SCL, SDA)

■ 16-step dimming circuit to control the display

brightness

■ 5.0 V (± 10%) for VCC

■ Built-in thermal protection circuit

■ External crystal with internal oscillator for real

time clock (RTC)

Applications

■ Set-top boxes

■ White goods

■ Home appliances

■ DVD players, VCRs, DVD-R

Description

The STLED325 is a compact LED controller/

driver that interfaces microprocessors to LED

displays through serial I2C interface. It drives

LEDs connected in common anode configuration

and includes keyscanning for an 8 x 2 key matrix

which automatically scans and de-bounces a

matrix of up to 16 switches.

Furthermore, the STLED325 provides standby

power management to the host. It also integrates

a low-power, highly-accurate RTC and a remote-

control decoder. All functions are programmable

using the I2C bus. Low power consumption during

standby mode is achieved.

The STLED325 controller/driver is ideal as a

single peripheral device to interface the front

panel display with a single-chip host IC like CPU.

QFN32

(5 x 5 mm)

Table 1.

Device summary

Order code

Temp range

(° C)

Package

Comments

STLED325QTR

-40 to +85 °C

QFN32

250 parts per reel

www.st.com

类似零件编号 - STLED325

制造商	部件名	数据表	功能描述
STMicroelectronics	STLED316S	82Kb / 4P	Serial-Interfaced 6-Digit LED controller with key scan 07-Feb-2007
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	STLED316SMTR	441Kb / 33P	Serial-interfaced 6-digit LED controller with keyscan 09-Jan-2008
	STLED316S	441Kb / 33P	Serial-interfaced 6-digit LED controller with keyscan 09-Jan-2008

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