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STLUX325A：Digital controllers for lighting and power conversion applications with up to 6 programmable PWM generators, 96 MHz PLL, DALI

The STLUX™ family of controllers is a part of the STMicroelectronics^®digital devices tailored for lighting and power conversion applications. The STLUX controllers have 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

• Up to 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
• ADCs (up to 8 channels)
  • 10-bit precision, with operational amplifier to extend resolution to 12-bit equivalent
  • Sequencer functionality
  • Input impedance: 1 MΩ
  • Configurable gain value: x1 and x4
• Integrated microcontroller
  • Advanced STM8® core with Harvard architecture and 3-stage pipeline
  • Max. fCPU : 16 MHz
  • Multiple low power modes
• Memories
  • Flash and E2 PROM 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 E2 PROM; data retention:15 years at 85 °C after 100 kcycles at 85 °C
  • RAM: 2 Kbytes
• 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
• I/O
  • GPIO with highly robust design, immune against current injection
  • Fast digital input DIGIN, with configurable pull-up
• Communication interfaces
  • UART asynchronous with SW flow control and boot loader support
  • I2 C master/slave fast-slow speed rate
• Operating temperature: -40 °C up to 105 °C

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