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)