STLED325
STLED325 is advanced LED controller/driver manufactured by STMicroelectronics.
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
QFN32 (5 x 5 mm)
Description
The STLED325 is a pact LED controller/ driver that interfaces microprocessors to LED displays through serial I2C interface. It drives LEDs connected in mon 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 remotecontrol 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.
Table 1. Device summary
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