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STM32L152RCT6

Ultra-low-power Cortex-M3 MCU, 32MHz, 256KB Flash, 32KB SRAM, LCD controller, LQFP-64

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Manufacturer Part：

STM32L152RCT6

Package：

LQFP-64 (10x10mm)

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Description

Product Overview

The STM32L152RCT6 from STMicroelectronics is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M3 core, operating at up to 32MHz. Featuring 256KB Flash, 32KB SRAM, 8KB true EEPROM, and an integrated LCD controller, it provides rich analog peripherals including dual op-amps, 12-bit ADC, and dual DACs. Housed in a 64-pin LQFP package, it operates from 1.65V to 3.6V.

Key Specifications

Core ARM Cortex-M3
Max Clock Frequency 32 MHz
Flash Memory 256 KB
SRAM 32 KB
EEPROM 8 KB (true EEPROM with ECC)
I/O Pins 51
LCD Controller Up to 8×40 segments
USB 2.0 Full Speed
USART 3
SPI 3 (2 with I2S)
I2C 2
ADC 12-bit, 1Msps, up to 25 channels
DAC 2-channel, 12-bit
Op-Amps 2
Capacitive Sensing Up to 23 channels
Supply Voltage 1.65V ~ 3.6V
Operating Temperature -40°C ~ 85°C
Package LQFP-64 (10x10mm)
Part Status Active

Features

  • Ultra-low-power: 0.29μA Standby, 0.44μA Stop, 185μA/MHz Run
  • 8μs wakeup time from Stop mode
  • True 8KB EEPROM with ECC (no flash emulation needed)
  • Integrated LCD controller with built-in step-up converter
  • Dual operational amplifiers with configurable gain
  • 12-bit ADC at 1Msps with up to 25 channels
  • Dual 12-bit DACs with output buffers
  • 23 capacitive sensing channels for touch applications
  • USB 2.0 Full Speed with internal 48MHz PLL
  • 96-bit unique device ID

Applications

  • Smart meters and energy management
  • Portable medical devices and health monitors
  • Building automation and HVAC controllers
  • Consumer electronics with LCD displays
  • Industrial sensors and low-power wireless nodes

The STM32L152RCT6 is an ultra-low-power 32-bit microcontroller from STMicroelectronics based on the ARM Cortex-M3 core, operating at up to 32MHz. It incorporates 256KB of Flash memory with ECC, 32KB of SRAM, and 8KB of true EEPROM with ECC, eliminating the need for flash-based EEPROM emulation. The device features an integrated LCD controller capable of driving up to 8×40 segments with a built-in step-up converter for contrast adjustment independent of supply voltage. Rich analog peripherals include two operational amplifiers, a 12-bit ADC at 1Msps, dual 12-bit DACs, and two ultra-low-power comparators. The USB 2.0 Full Speed interface uses an internal 48MHz PLL, requiring no external crystal for USB operation. Up to 23 capacitive sensing channels enable touch-sensing functionality without external components.

The STM32L152RCT6 employs a multi-domain power architecture to achieve ultra-low power consumption. The VCORE domain powers the Cortex-M3 core, Flash, and SRAM, with dynamic voltage scaling to optimize power at different frequency ranges. Multiple low-power modes include Run, Low-Power Run, Sleep, Low-Power Sleep, Stop (with or without RTC), and Standby (with or without RTC). The 8μs wakeup time from Stop mode enables responsive operation while maintaining low average current. The LCD controller operates independently in Stop mode, consuming minimal power while maintaining display content. The true EEPROM uses a dedicated charge pump and ECC for reliable non-volatile storage without the wear-leveling overhead of flash emulation.

Pin Name Type Description
1 VBAT PWR Battery backup supply for RTC and backup registers
2 PC13 I/O Tamper pin / RTC AF / Wakeup pin
3-6 PC14-PC15 I/O LSE oscillator / General purpose I/O
7-10 PD0-PD2, PD3 I/O LCD segment / General purpose I/O
11 NRST I System reset (active low)
12 VCAP PWR Internal voltage regulator capacitor
13 VDD PWR Main power supply (1.65V-3.6V)
14 VSS GND Ground
15-30 PA0-PA15 I/O Port A: ADC, DAC, Op-Amp, USART, SPI, I2C, USB
31-46 PB0-PB15 I/O Port B: LCD, TIM, SPI, I2C, capacitive sensing
47-62 PC0-PC15 I/O Port C: LCD, TIM, USART
63 VDD PWR Main power supply
64 VSS GND Ground
  • Smart Metering: Ultra-low-power metering with LCD display and RTC for time-of-use billing
  • Medical Wearables: 0.29μA standby current for long battery life in health monitors
  • Home Automation: LCD thermostat controllers with capacitive touch buttons
  • Portable Instruments: Multi-channel ADC with op-amps for sensor signal conditioning
  • IoT End Nodes: Low-power sensor aggregation with USB for firmware updates
Model Manufacturer Key Difference
STM32L152RET6 STMicroelectronics 512KB Flash, 80KB SRAM, LQFP-64
STM32L151RCT6 STMicroelectronics Same but without LCD controller
STM32L152VCT6 STMicroelectronics LQFP-100 package, more I/O
STM32L432KCU6 STMicroelectronics Cortex-M4, 80MHz, UFQFPN-32, newer series
MSP430F6779 Texas Instruments 16-bit ultra-low-power, LCD, metering-focused
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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