Overview
The STM32L031C6T7D is a member of the ultra-low-power STM32L031x4/6 family of microcontrollers from STMicroelectronics. This device is built around the high-performance ARM® Cortex®-M0+ 32-bit RISC core, operating at a frequency of up to 32 MHz. It is designed to provide high power efficiency and is suitable for a wide range of applications requiring low power consumption.
The STM32L031C6T7D features high-speed embedded memories, including up to 32 Kbytes of Flash program memory, 8 Kbytes of RAM, and 1 Kbyte of data EEPROM. The device also includes an extensive range of enhanced I/Os and peripherals, such as analog features, timers, and communication interfaces.
With its comprehensive set of power-saving modes, the STM32L031C6T7D is ideal for designing low-power applications, operating from a 1.8 to 3.6 V power supply and within a temperature range of -40 to +125 °C.
Key Specifications
| Specification | Value |
|---|---|
| Core | ARM® 32-bit Cortex®-M0+ |
| Maximum Clock Frequency | Up to 32 MHz |
| Flash Memory | Up to 32 Kbytes |
| RAM | 8 Kbytes |
| Data EEPROM | 1 Kbyte |
| Power Supply | 1.8 to 3.6 V (down to 1.65 V at power down) |
| Temperature Range | -40 to +125 °C |
| Standby Mode Current | 0.25 μA (2 wakeup pins) |
| Stop Mode Current | 0.38 μA (16 wakeup lines) |
| Stop Mode + RTC + 8 KB RAM Retention Current | 0.68 μA |
| Run Mode Current | Down to 76 μA/MHz |
| ADC Resolution | 12-bit |
| Number of I/Os | 38 I/Os (31 I/Os 5V tolerant) |
| Communication Interfaces | I2C, SPI, USART, Low-power UART (LPUART) |
| Timers | 3x 16-bit timers, 1x 16-bit ultra-low-power timer, 1x RTC, 1x SysTick, 2x watchdogs |
| Package | LQFP 48 7x7x1.4 mm, UFQFPN 48 7x7x0.55 mm |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, etc.)
- High-performance ARM® Cortex®-M0+ 32-bit RISC core operating at up to 32 MHz
- High-speed embedded memories: up to 32 Kbytes of Flash, 8 Kbytes of RAM, and 1 Kbyte of data EEPROM
- Rich analog peripherals: 12-bit ADC with hardware oversampling, two ultra-low-power comparators
- Extensive range of timers: three 16-bit timers, one 16-bit ultra-low-power timer, one RTC, one SysTick, and two watchdogs
- Standard and advanced communication interfaces: I2C, SPI, USART, and low-power UART (LPUART)
- Real-time clock and backup registers that remain powered in Standby mode
- Internal voltage adaptation and several low-power modes
- Up to 38 fast I/Os (31 I/Os 5V tolerant)
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Pre-programmed bootloader and serial wire debug support
Applications
The STM32L031C6T7D is suitable for a variety of low-power applications, including:
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- IoT devices and sensor networks
- Battery-powered devices and energy harvesting applications
Q & A
- What is the core architecture of the STM32L031C6T7D?
The STM32L031C6T7D is based on the ARM® 32-bit Cortex®-M0+ RISC core.
- What is the maximum clock frequency of the STM32L031C6T7D?
The maximum clock frequency is up to 32 MHz.
- What are the power supply and temperature range specifications?
The device operates from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) and within a temperature range of -40 to +125 °C.
- What are the key power-saving modes and their current consumption?
The device features Standby mode (0.25 μA), Stop mode (0.38 μA), and Stop mode + RTC + 8 KB RAM retention (0.68 μA).
- What types of communication interfaces are available?
The device includes I2C, SPI, USART, and low-power UART (LPUART) interfaces.
- What is the resolution of the ADC and how many channels does it support?
The ADC has a 12-bit resolution and supports up to 10 channels.
- How many I/Os does the STM32L031C6T7D have?
The device has up to 38 I/Os, with 31 I/Os being 5V tolerant.
- What types of timers are available on the STM32L031C6T7D?
The device features three 16-bit timers, one 16-bit ultra-low-power timer, one RTC, one SysTick, and two watchdogs.
- Does the STM32L031C6T7D support real-time clock functionality?
Yes, it includes a real-time clock and backup registers that remain powered in Standby mode.
- What are the available package options for the STM32L031C6T7D?
The device is available in LQFP 48 7x7x1.4 mm and UFQFPN 48 7x7x0.55 mm packages.
