Overview
The STM32L152QEH6 is an ultra-low-power microcontroller from STMicroelectronics, part of the 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 an integrated LCD controller, USB, and various analog and digital interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| 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 |
| Power Supply | 1.65 V to 3.6 V |
| Temperature Range | -40 °C to 105 °C |
| ADC | 12-bit, 1 Msps, up to 40 channels |
| 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 basic timers, 2x watchdog timers |
| Communication Interfaces | USB 2.0, 5x USARTs, up to 8x SPIs, 2x I2Cs |
| Capacitive Sensing Channels | Up to 34 channels |
| Low-Power Modes | Standby: 290 nA, Stop: 560 nA, Low-power run: 11 µA |
Key Features
- Ultra-low-power platform with multiple power-saving modes (Standby, Stop, Low-power run, Low-power sleep)
- Integrated LCD controller (up to 8x40 segments) with contrast adjustment and blinking mode
- Rich analog peripherals including 2 operational amplifiers, 12-bit ADC, 12-bit DAC, and 2 ultra-low-power comparators
- Comprehensive set of communication interfaces: USB 2.0, USARTs, SPIs, I2Cs, and I2S
- Up to 34 capacitive sensing channels for touch sensing functionality
- DMA controller with 12 channels and memory protection unit
- Internal clock sources including crystal oscillators, internal RC oscillators, and PLL for CPU and USB clock
- Development support with serial wire debug, JTAG, and trace
Applications
The STM32L152QEH6 is suitable for a wide range 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
- Automotive systems, especially those requiring low power and high reliability
- IoT devices and sensor networks
Q & A
- What is the core architecture of the STM32L152QEH6?
The core architecture is based on the Arm® Cortex®-M3 32-bit RISC CPU. - What is the maximum frequency of the STM32L152QEH6?
The maximum frequency is up to 32 MHz. - How much Flash memory does the STM32L152QEH6 have?
The STM32L152QEH6 has 512 Kbytes of Flash memory with ECC. - What is the power supply range of the STM32L152QEH6?
The power supply range is from 1.65 V to 3.6 V. - What are the key low-power modes of the STM32L152QEH6?
The key low-power modes include Standby, Stop, Low-power run, and Low-power sleep. - Does the STM32L152QEH6 support USB?
Yes, it supports USB 2.0 with an internal 48 MHz PLL. - How many capacitive sensing channels does the STM32L152QEH6 have?
It has up to 34 capacitive sensing channels. - What types of timers are available on the STM32L152QEH6?
It includes 1x 32-bit timer, 6x 16-bit timers, 2x basic timers, and 2x watchdog timers. - Does the STM32L152QEH6 have an integrated LCD controller?
Yes, it has an integrated LCD controller capable of driving up to 8x40 segments. - What development tools are supported by the STM32L152QEH6?
It supports serial wire debug, JTAG, and trace.
