Overview
The STM32L151ZET6 is an ultra-low-power microcontroller from STMicroelectronics, part of the STM32L151xE and STM32L152xE series. It features the high-performance Arm® Cortex®-M3 32-bit RISC core, operating at a frequency of up to 32 MHz. This MCU is designed for low-power applications, offering a comprehensive set of power-saving modes and advanced peripherals. It includes 512 Kbytes of Flash memory, 80 Kbytes of RAM, and 16 Kbytes of true EEPROM, along with a rich set of analog and digital peripherals. The device supports various communication interfaces such as USB, USART, SPI, I2C, and I2S, making it versatile for a wide range of applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® Cortex®-M3 32-bit CPU |
| Frequency | Up to 32 MHz |
| Flash Memory | 512 Kbytes with ECC |
| RAM | 80 Kbytes |
| EEPROM | 16 Kbytes with ECC |
| Backup Register | 128 bytes |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 °C to 105 °C |
| Low-Power Modes | Standby: 290 nA (3 wakeup pins), Stop: 560 nA (16 wakeup lines) |
| ADC | 12-bit, up to 40 channels, 1 Msps |
| DAC | 12-bit, 2 channels with output buffers |
| Operational Amplifiers | 2x |
| Comparators | 2x ultra-low-power comparators |
| Timers | 1x 32-bit, 6x 16-bit, 2x 16-bit basic timers, 2x watchdog timers |
| Communication Interfaces | USB 2.0, up to 5x USART, up to 8x SPI, 2x I2C, 2x I2S |
| I/Os | Up to 116 fast I/Os (102 I/Os 5V tolerant) |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, Low-power run, Low-power sleep)
- Includes ST state-of-the-art patented technology
- Memory protection unit (MPU)
- Up to 34 capacitive sensing channels
- CRC calculation unit, 96-bit unique ID
- Low-power, ultrasafe BOR (brownout reset) with 5 selectable thresholds
- Programmable voltage detector (PVD)
- Clock sources: 1 to 24 MHz crystal oscillator, 32 kHz oscillator for RTC, internal 16 MHz oscillator, internal low-power 37 kHz oscillator, internal multispeed low-power 65 kHz to 4.2 MHz oscillator
- PLL for CPU clock and USB (48 MHz)
- Pre-programmed bootloader
- Rich analog peripherals: 2x operational amplifiers, 12-bit ADC, 12-bit DAC, 2x ultra-low-power comparators
- DMA controller with 12 channels
- Development support: serial wire debug, JTAG, and trace
Applications
- Low-power IoT devices
- Industrial automation and control systems
- Medical devices requiring low power consumption
- Consumer electronics such as smart home devices and wearables
- Automotive systems, especially those requiring low power and high reliability
- Sensor networks and data logging applications
Q & A
- What is the core architecture of the STM32L151ZET6?
The STM32L151ZET6 features an Arm® Cortex®-M3 32-bit RISC core.
- What is the maximum frequency of the CPU?
The CPU operates at a frequency of up to 32 MHz.
- How much Flash memory does the STM32L151ZET6 have?
The device has 512 Kbytes of Flash memory with ECC.
- What are the power supply voltage ranges for the STM32L151ZET6?
The device operates from a 1.65 V to 3.6 V power supply.
- What are the low-power modes available on the STM32L151ZET6?
The device supports Standby, Stop, Low-power run, and Low-power sleep modes.
- Does the STM32L151ZET6 support USB?
Yes, it supports USB 2.0 with an internal 48 MHz PLL.
- What types of timers are available on the STM32L151ZET6?
The device includes 1x 32-bit timer, 6x 16-bit timers, 2x 16-bit basic timers, and 2x watchdog timers.
- How many I/Os does the STM32L151ZET6 have?
The device has up to 116 fast I/Os (102 I/Os 5V tolerant).
- What is the temperature range for the STM32L151ZET6?
The device operates in the -40 °C to 105 °C temperature range.
- Does the STM32L151ZET6 have any analog peripherals?
Yes, it includes 2x operational amplifiers, a 12-bit ADC, a 12-bit DAC, and 2x ultra-low-power comparators.
