By STMicroelectronics 65


STMicroelectronics' STLUX385A device is part of the STLUX family of STMicroelectronics® digital devices tailored for lighting and power-conversion applications. The STLUX385A has been successfully integrated in a wide range of architectures and applications, starting from simple buck converters for driving multiple LED strings, boost for power factor corrections, half-bridge resonant converters for high-power dimmable LED strings and up to full-bridge controllers for HID lamp ballasts.

Key Features
  • 6 programmable PWM generators (SMEDs) (state machine event driven)
    • 10 ns event detection and reaction
    • Max.1.3 ns PWM resolution
    • Single, coupled and two coupled, operational modes
    • Up to 3 internal/external events per SMED
  • DALI (digital addressable lighting interface)
    • Interrupt-driven hardware encoder
    • Bus frequency: 1.2, 2.4 or 4.8 kHz
    • IEC 60929 and IEC 62386 compliant plus 24-bit frame extension
    • Configurable noise rejection filter
    • Reverse polarity on Tx/Rx lines
  • 4 analog comparators
    • 4 internal 4-bit references
    • 1 external reference
    • Less than 50 ns propagation time
    • Continuous comparison cycle
  • 8 analog-to-digital converters (ADCs)
    • 10-bit precision, with operational amplifier to extend resolution to 12-bit equivalent
    • Sequencer functionality
    • Input impedance: 1 MΩ
    • Configurable gain value: x 1 or x 4
  • Memories
    • Flash and E2PROM with read while write (RWW) and error correction code (ECC)
    • Program memory: 32 Kbytes Flash; data retention 15 years at 85°C after 10 kcycles at 25°C
    • Data memory: 1 Kbyte true data E2PROM; data retention:15 years at 85°C after 100 kcycles at 85°C
    • RAM: 2 Kbytes
    • ROM: 2 Kbytes
  • Integrated microcontroller
    • Advanced STM8® core with Harvard architecture and 3-stage pipeline
    • Max. fCPU: 16 MHz
  • Clock management
    • Internal 96 MHz PLL
    • Low-power oscillator circuit for external crystal resonator or direct clock input
    • Internal, user-trimmable 16 MHz RC and low-power 153.6 kHz RC oscillators
    • Clock security system with clock monitor
  • Basic peripherals
    • System and auxiliary timers
    • IWDG/WWDG watchdog, AWU, ITC
  • Reset and supply management
    • Multiple low-power modes (wait, slow, auto-wakeup, Halt) with user-definable clock gating
    • Low consumption power-on and power-down reset
  • I/O
    • 12 multifunction bidirectional GPIO with highly robust design, immune against current injection
    • 6 fast digital input DIGIN, with configurable pull-up
  • Communication interfaces
    • UART asynchronous with SW flow control
    • I2C master/slave fast-slow speed rate
  • Operating temperature
    • -40°C up to 105°C