Features

• • Ultra-low-power platform
    
    - 1.65V to 3.6V power supply
    
         *1.65V~1.8V @Max.4.2MHz (Flash read only)
    
         *1.8V~2.2V @Max.4.2MHz (Flash read & write)
    
         *2.3V~3.6V @Max.32MHz (Flash read & write)
    
    - -40°C to 105°C temperature range
    
    - 0.3 µA Standby mode
    
    - 1.0 µA Standby mode with RTC on
    
    - 0.6 µA Stop mode
    
    - 1.3 µA Stop mode with RTC on
    
    • Core: ARMI® 32-bit CortexI®-M0 processor
    - From 65.5 kHz up to 32 MHz Max.
    - 0.88 DMIPS/MHz
    
    • Interrupt Source
      
    - ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC).
    
    - 32 external interrupt inputs, each with four levels of priority.
    
    - Dedicated non-Maskable Interrupt (NMI) input.
    
    - Support for both level-sensitive and pulse-sensitive interrupt lines
    
    - Wake-up Interrupt Controller (WIC), supports ultra-low power sleep mode
    
    • System Tick Timer
      
    - 24-bit timer clock is fixed to the frequency of the system clock.
    
    • Memories
      
    - WT32L064: Up to 64 KB Flash memory
    
    - WT32L032: Up to 32 KB Flash memory
    
    - 8 KB RAM
    
    • Up to 51 fast I/Os (most 5V tolerant)
      
    • Reset and supply management
      
    - Ultra-safe, low-power BOR (Brownout Reset) with 5 selectable thresholds
    
    - Ultra-low-power POR/PDR
    
    - Programmable Voltage Detector (PVD)
    
    • Clock sources
      
    - 1 MHz to 25 MHz crystal oscillator
    
    - 32 kHz oscillator for RTC and calendar function
    
    - High speed internal 16 MHz factory-trimmed RC (± 1%)
    
    - Internal low-power 37 kHz RC
    
    - Internal multispeed low-power 65 kHz to 4.2 MHz RC
    
    - Internal self- calibration of 48 MHz RC for USB
    
    - PLL for CPU clock
    
    • Development support
      
    - Serial wire debug supported
    
    • Rich Analog peripherals
      
    - 12-bit SAR ADC 0.5 Ms/s up to 16 channels (down to 1.8V)
    
    - 12-bit channel DACs with output buffers (down to 1.8V)
    
    - ultra-low-power comparators (window mode and wake up capability, down to 1.65V)
    
    • 7-channel DMA controller, supporting ADC, SPI, I2C, UART, Timers, and USB
      
    • Peripheral communication interfaces
      
    - 1x USB 1.1 crystal-less
    
    - 2x UART
    
    - Up to 2x SPI 16 M bits/sec
    
    - 2x I2C
    
    - 1x I2S up to 32-bit word size
    
    • 6x timers: 3x 16-bit with up to 4 channels, 1x RTC and 2x Watchdogs (independent/window)
      
    • 4-channel PWM
      
    • CRC calculation unit
      
    • Green package: LQFP-64 (7mmx7mm), LQFP-48 (7mmx7mm), and QFN32 (5mmx5mm)