STM32L071RZ Description
The access line ultra-low-power STM32L071xx microcontrollers incorporate 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 STM32L071xx devices provide high power efficiency for a wide range of performance. It is achieved with a wide choice of internal and external clock sources, an internal voltage adaptation, and several low-power modes.
STM32L071RZ Features
Ultra-low-power platform
– 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 kbps
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
– Ultra-safe, low-power BOR (brownout reset)
with 5 selectable thresholds
– Ultra-low-power POR/PDR
– Programmable voltage detector (PVD)
Clock sources
– 1 to 25 MHz crystal oscillator
– 32 kHz oscillator for RTC with calibration
– 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
– PLL for CPU clock
Pre-programmed bootloader
– USART, I2C, SPI supported
Development support
– Serial wire debug supported
