Weltrend

Products

WT32L064/032

【 General Description 】

The WT32L064/032 is an ultra-low power Arm Cortex M0-based 32-bit microcontroller with 64KB/32KB embedded flash memory and 8KB SRAM. It could operate up to 32MHz and is able to achieve 32 MIPS performance due to the advanced design by Weltrend, where zero wait-state can be obtained while accessing flash memory.

In addition, with low power design technique and extremely low leakage semiconductor process technology, the power consumption of WT32L064/032 can be less than 0.6µA in stop mode and less than 0.3µA in standby mode.

This highly integrated MCU contains rich peripherals such as 12-bit ADC, 12-bit DAC, CRC32, GPIO, PWM, USB 2.0 (full-speed), I2S, I2C, UART, SPI, and etc., which is perfectly suitable for battery-powered and energy harvesting applications.

Some examples of the applications of the WT32L064/032 include True Wireless Stereo (TWS) charging case, dual-mode wireless gaming keyboard and mouse, flowmeter, various sensor applications such as gas, temperature, humidity, and pressure sensor as well as for use as a sensor hub.

【 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)

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