 System:
 ARM Cortex-M0+ processor, running at frequencies of up to 30 MHz with
single-cycle multiplier and fast single-cycle I/O port.
 ARM Cortex-M0+ built-in Nested Vectored Interrupt Controller (NVIC).
 System tick timer.
 Serial Wire Debug (SWD) and JTAG boundary scan modes supported.
 Micro Trace Buffer (MTB) supported.
 Memory:
 Up to 16 kB on-chip flash programming memory with 64 Byte page write and erase.
 Up to 4 kB SRAM.
 ROM API support:
 Boot loader.
 USART drivers.
 I2C drivers.
 Power profiles.
 Flash In-Application Programming (IAP) and In-System Programming (ISP).
 Digital peripherals:
 High-speed GPIO interface connected to the ARM Cortex-M0+ IO bus with up to 18
General-Purpose I/O (GPIO) pins with configurable pull-up/pull-down resistors,
programmable open-drain mode, input inverter, and glitch filter.
 High-current source output driver (20 mA) on four pins.
 High-current sink driver (20 mA) on two true open-drain pins.
 GPIO interrupt generation capability with boolean pattern-matching feature on eight
GPIO inputs.
 Switch matrix for flexible configuration of each I/O pin function.