Описание
The KL27 series is optimized for cost-sensitive and batterypowered applications requiring low-power USB connectivity. The product offers: USB FS 2.0 device without requiring an external crystal Embedded ROM with boot loader for flexible program upgrade High accuracy internal voltage and clock reference FlexIO to support any standard and customized serial peripheral emulation Down to 54uA/MHz in very low power run mode and 1.96uA in deep sleep mode (RAM + RTC retained)
- Core Processor
- ARM® Cortex®-M0+ core up to 48 MHz
- Memories
- 128/256 KB program flash memory
- 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
- Operating Characteristics
- Voltage range: 1.71 to 3.6 V
- Flash write voltage range: 1.71 to 3.6 V
- Temperature range: –40 to 105 °C
- Packages
- 64 LQFP 10mm x 10mm, 0.5mm pitch, 1.6mm thickness
- 64 MAPBGA 5mm x 5mm, 0.5mm pitch, 1.23mm thickness
- 48 QFN 7mm x 7mm, 0.5mm pitch, 0.65mm thickness
- 32 QFN 5mm x 5mm, 0.5mm pitch, 0.65mm thickness
- Peripherals
- USB full-speed 2.0 device controller supporting crystal-less operation
- 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
- Security and Integrity
- 80-bit unique identification number per chip
- Advanced flash security
- I/O
- Up to 50 general-purpose input/output pins (GPIO) and 6 high-drive pad
- Low Power
- Down to 54uA/MHz in very low power run mode
- Down to 1.96uA in VLLS3 mode (RAM + RTC retained)
- Six flexible static modes
