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Description
STM32L152VET6 Product Overview
The STM32L152VET6 is an Arm Cortex-M3 MCU at 32 MHz, LQFP-100. The STM32L152VET6 offers 512 KB Flash, 80 KB SRAM, 16 KB EEPROM, an LCD segment driver (up to 8×40), 12-bit ADC (24 ch), two 12-bit DACs, two comparators, capacitive touch channels, LP timers, RTC, 3×USART, 2×SPI, 2×I2C. Up to 83 x 5 V-tolerant I/Os. 1.8–3.6 V, -40–85 °C. Compared to the STM32L152VCT6 (256 KB Flash, 32 KB SRAM), the STM32L152VET6 significantly increases Flash and SRAM, delivering the most powerful ultra-low-power platform in the series for battery-powered smart meters, industrial instruments, and HMI devices needing maximum program space, complex data processing, segment display, and dense peripherals.
STM32L152VET6 Core Features
STM32L152VET6 Core: Arm Cortex-M3 32 MHz, low-power design
STM32L152VET6 Memory: 512 KB Flash, 80 KB SRAM, 16 KB EEPROM
STM32L152VET6 Display & Analog: LCD segment driver (up to 8×40), 2×12-bit DACs, 12-bit ADC (24 ch), 2×Comparators, capacitive touch
STM32L152VET6 Connectivity: 3×USART, 2×SPI, 2×I2C
STM32L152VET6 Timers: LP Timer, GP Timers, RTC
STM32L152VET6 I/Os: 83 (5 V-tolerant)
STM32L152VET6 Package: LQFP-100
STM32L152VET6 Temperature Range: -40°C to 85°C
STM32L152VET6 Applications
STM32L152VET6 Smart Metering & Instrumentation: Water, gas, electricity meters, industrial instruments
STM32L152VET6 Portable Devices: Wearables, portable medical devices
STM32L152VET6 Smart Home: Thermostats, smart switches, HMI panels
STM32L152VET6 Consumer Electronics: Remote controls, e-labels, smart cards
STM32L152VET6 Energy Harvesting Applications: Self-powered sensor nodes
STM32L152VET6 Key Advantages
The STM32L152VET6 offers 512 KB Flash + 80 KB SRAM + 16 KB EEPROM: the most powerful memory configuration in the series for complex algorithms and massive data logging
The STM32L152VET6 integrates an LCD Segment Driver + Ultra-Low Power: segment display with extremely low power, ideal for battery-powered display applications
The STM32L152VET6 includes Dual DACs + Comparators + Capacitive Touch: flexible analog output, signal detection, and touch sensing all integrated
The STM32L152VET6 provides 83 I/Os + 24 ADC Channels in LQFP-100: rich pins and analog channels for peripheral-intensive systems
The STM32L152VET6 features a Cortex-M3 Core: stronger processing than M0+ while balancing complex control and low power
The STM32L152VET6 has 5 V-tolerant I/Os: enhanced noise immunity and simplified external circuit design
The STM32L152VET6 ensures Full Ecosystem Compatibility: easy development with STM32CubeIDE/HAL/LL libraries
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FAQ
1. What is STM32L152VET6?
STM32L152VET6 is an ultra-low-power 32-bit MCU from STMicroelectronics' STM32L1 series, based on an Arm® Cortex®-M3 core in an LQFP-100 package. Running at up to 32 MHz, the STM32L152VET6 provides 512 KB Flash and 80 KB SRAM, and integrates a segment LCD driver, 12-bit DAC, 12-bit ADC, USB device interface, and capacitive touch sensing channels. As a mature platform designed for battery-powered devices needing a segment display, the STM32L152VET6 combines strong analog integration with excellent energy efficiency.
2. What are the key specifications of STM32L152VET6?
Core: Arm® Cortex®-M3, up to 32 MHz, 1.25 DMIPS/MHz
Memory: 512 KB Flash, 80 KB SRAM
Operating Voltage: 1.65 V to 3.6 V
Temperature Range: -40 °C to +85 °C (industrial grade)
I/O Count: up to 83
Package: LQFP-100 (14 mm × 14 mm)
3. How many segments can the built-in LCD driver handle? Is an external driver chip necessary?
The STM32L152VET6 integrates an LCD controller capable of driving up to 8 common lines and 44 segment lines (8 COM × 44 SEG), for a maximum of 320 segments. This easily satisfies the display needs of most meters, thermostats, and utility meters without any external driver chip. The LCD can keep refreshing even in low-power modes using its internal voltage converter and independent clock, making the STM32L152VET6 perfect for always-on battery-powered displays.
4. What features does the STM32L152 add compared to the STM32L151?
The STM32L152VET6 adds a segment LCD driver and a 12-bit DAC to the L151 base. This means the STM32L152VET6 can not only serve general low-power embedded applications but also directly drive segment displays and output analog voltages or waveforms. The STM32L152VET6 is ideally suited for handheld instruments, smart sensors, and industrial control panels that require local display and analog control.
5. What can the 80 KB SRAM do? Is external memory expansion supported?
The STM32L152VET6's 80 KB SRAM is a generous size within the L1 series and comfortably supports a lightweight RTOS, complex communication stacks, or LCD frame buffers and data processing. For even larger storage needs, external SPI Flash or SRAM can be added to the STM32L152VET6 via the Quad SPI or parallel interface for data logging or graphics buffering.
6. How is the low-power performance? What are the typical currents in various modes?
Temperature Range: -40 °C to +85 °C
Ultra-low-power modes:
Standby mode: ~0.3 µA (no RTC)
Stop mode: ~0.5 µA (no RTC)
Low-power Run mode: ~10 µA/MHz
Run mode: ~230 µA/MHz
7. What key communication and analog peripherals does the STM32L152VET6 offer?
Communication: USB 2.0 Full-Speed Device, I²C, SPI, UART/USART
Analog: 12-bit ADC, 12-bit DAC, ultra-low-power comparators
Others: Segment LCD driver, capacitive touch sensing channels (TSC), temperature sensor
8. What can the USB interface do? Does it support USB host mode?
The STM32L152VET6 integrates a USB 2.0 full-speed device controller, meaning the STM32L152VET6 can only operate as a device, not as a host to read/write USB flash drives. It can be configured as a CDC virtual COM port, an HID device, or a mass storage device, facilitating data exchange and firmware updates with a PC or smartphone. For USB host capability, upgrade to STM32L4 or STM32F4 series.
9. What specific application scenarios is the STM32L152VET6 suited for?
With the STM32L152VET6's segment LCD driver, DAC, USB, and ultra-low power, the STM32L152VET6 excels in battery-powered devices that need a local segment display and analog output, such as smart water/gas meters, handheld medical instruments, thermostat panels, industrial handheld terminals, and portable data loggers. The 512 KB Flash and 80 KB SRAM provide ample code and data space for these applications.
10. What development tools are needed for the STM32L152VET6?
ST provides free STM32CubeMX and STM32CubeIDE with the STM32CubeL1 firmware library. Debugging and programming use ST-Link debuggers. For rapid prototyping, boards like the NUCLEO-L152RE or other compatible development kits can be used, with highly compatible pinouts for quick code migration. The STM32L152VET6 benefits from this mature ecosystem.