Kinetis KL33 Microcontroller 48 MHz ARM® Cortex®-M0+ and 128/256 KB Flash

Core Processor
    • ARM® Cortex®-M0+ core up to 48 MHz
Memories
    • 128/256 KB program flash memory
    • 16/32 KB SRAM
    • 16 KB ROM with build-in bootloader
    • 32-byte backup register
System
    • 4-channel asynchronous DMA controller
    • Watchdog
    • Low-leakage wakeup unit
    • Two-pin Serial Wire Debug (SWD) programming and debug interface
    • Micro Trace Buffer
    • Bit manipulation engine
    • Interrupt controller
Clocks
    • 48MHz high accuracy (up to 0.5%) internal reference clock
    • 8MHz/2MHz high accuracy (up to 3%) internal reference clock
    • 1KHz reference clock active under all low-power modes (except VLLS0)
    • 32–40KHz and 3–32MHz crystal oscillator
Peripherals
    • Segment LCD supporting up to 28x8 or 32x4 segments
    • One UART module supporting ISO7816, operating up to 1.5 Mbit/s
    • Two low-power UART modules supporting asynchronous operation in low-power modes
    • Two I2C modules and I2C0 supporting up to 1 Mbit/s
    • Two 16-bit SPI modules supporting up to 24 Mbit/s
    • One FlexIO module supporting emulation of additional UART, IrDA, SPI, I2C, I2S, PWM and other serial modules, etc.
    • One serial audio interface I2S
    • One 16-bit 818 ksps ADC module with high accuracy internal voltage reference (Vref) and up to 16 channels
    • High-speed analog comparator containing a 6-bit DAC for programmable reference input
    • One 12-bit DAC
    • 1.2 V internal voltage reference
Timers
    • One 6-channel Timer/PWM module
    • Two 2-channel Timer/PWM modules
    • One low-power timer
    • Periodic interrupt timer
    • Real time clock