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
- 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 1Mbit/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
