STM32L073RZT6U STMicroelectronics 32bit MCU

STM32L073RZT6U Overview

The ultra-low-power STM32L073xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance Arm Cortex-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (up to 192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

The STM32L073xx devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.
The STM32L073xx devices offer several analog features, one 12-bit ADC with hardware oversampling, two DACs, two ultra-low-power comparators, several timers, one low-power timer (LPTIM), four general-purpose 16-bit timers and two basic timer, one RTC and one SysTick which can be used as timebases. They also feature two watchdogs, one watchdog with independent clock and window capability and one window watchdog based on bus clock.
Moreover, the STM32L073xx devices embed standard and advanced communication interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, a low-power UART (LPUART), and a crystal-less USB. The devices offer up to 24 capacitive sensing channels to simply add touch sensing functionality to any application.
The STM32L073xx also include a real-time clock and a set of backup registers that remain powered in Standby mode.
Finally, their integrated LCD controller has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.
The ultra-low-power STM32L073xx devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.

ECAD Model

Symbol

Footprint

Features

1.65 V to 3.6 V power supply
-40 to 125 °C temperature range
0.29 μA Standby mode (3 wakeup pins)
0.43 μA Stop mode (16 wakeup lines)
0.86 μA Stop mode + RTC + 20-Kbyte RAM retention
Down to 93 μA/MHz in Run mode
5 μs wakeup time (from Flash memory)
41 μA 12-bit ADC conversion at 10 ksps

Core: Arm 32-bit Cortex-M0+ with MPU

From 32 kHz up to 32 MHz max.
0.95 DMIPS/MHz

Memories

Up to 192-Kbyte Flash memory with ECC (2 banks with read-while-write capability)
20-Kbyte RAM
6 Kbytes of data EEPROM with ECC
20-byte backup register
Sector protection against R/W operation

Up to 84 fast I/Os (78 I/Os 5V tolerant)

Reset and supply management