1 Key features

1.1 Operating characteristics

• Voltage range: 2.7 to 5.5 V

• Flash write voltage range: 2.7 to 5.5 V

• Temperature range (ambient): -40 to 125°C

1.2 Performance

• Up to 40 MHz Arm® Cortex-M0+ core and up to 20 MHz bus clock

• Single cycle 32-bit x 32-bit multiplier

• Single cycle I/O access port

1.3 Memories and memory interfaces

• Up to 64 KB flash

• Up to 256 B EEPROM

• Up to 4 KB RAM

1.4 Clocks

• Oscillator (OSC) - supports 32.768 kHz crystal or 4 MHz to 20 MHz crystal or ceramic resonator; choice of low

power or high gain oscillators

• Internal clock source (ICS) - internal FLL with internal or external reference, 31.25 kHz pre-trimmed internal

reference for 40 MHz system and core clock.

• Internal 1 kHz low-power oscillator (LPO)

1.5 System peripherals

• Power management module (PMC) with three power modes: Run, Wait, Stop

• Low-voltage detection (LVD) with reset or interrupt, selectable trip points

• Watchdog with independent clock source (WDOG)

• Programmable cyclic redundancy check module (CRC)

• Serial wire debug interface (SWD)

• Bit manipulation engine (BME)

1.6 Security and integrity modules

• 64-bit unique identification (ID) number per chip

1.7 Human-machine interface

• Up to 57 general-purpose input/output (GPIO)

• Two up to 8-bit keyboard interrupt modules (KBI)

• External interrupt (IRQ)

1.8 Analog modules

• One up to 16-channel 12-bit SAR ADC, operation in Stop mode, optional hardware trigger (ADC)

• Two analog comparators containing a 6-bit DAC and programmable reference input (ACMP)

1.9 Timers

• One 6-channel FlexTimer/PWM (FTM)

• Two 2-channel FlexTimer/PWM (FTM)

• One 2-channel periodic interrupt timer (PIT)

• One real-time clock (RTC)

1.10 Communication interfaces

• Two SPI modules (SPI)

• Up to three UART modules (UART)

• One I2C module (I2C)

1.11 Package options

• 64-pin LQFP

• 32-pin LQFP