STMicroelectronics STM32L162VDT6

Overview

STM32L162VDT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 384 KB Flash, 48 KB SRAM, 12 KB EEPROM with ECC, integrated LCD controller (8×40 segments), USB 2.0 interface, and hardware AES-128 encryption accelerator. It operates from 1.65 V to 3.6 V across -40°C to +105°C and targets battery-powered medical sensors, portable industrial meters, and smart utility meters requiring long runtime and secure data handling.

For engineers reviewing the STM32L162VDT6 datasheet, STM32L162VDT6 pinout, STM32L162VDT6 application, or STM32L162VDT6 equivalent, key selection considerations include its 0.475 µA Stop mode current, 12-bit ADC with up to 40 channels at 1 Msps, dual 12-bit DACs with buffers, 3 operational amplifiers, and 116 fast I/Os (102 5V-tolerant) supporting capacitive touch sensing and memory interfaces for external SRAM/PSRAM/NOR.

Technical Context

The STM32L162VDT6 implements dynamic voltage scaling and multiple low-power modes-Stop (0.475 µA), Standby (305 nA), and Low-power Run (11 µA)-with sub-8 µs wakeup latency. Its Cortex-M3 core runs up to 32 MHz with 1.25 DMIPS/MHz performance and includes a Memory Protection Unit (MPU) for secure task isolation.

Clock architecture integrates six oscillators: HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), LSI (37 kHz), MSI (65 kHz–4.2 MHz), and a dedicated 48 MHz PLL for USB. The flexible static memory controller (FSMC) supports asynchronous/synchronous SRAM, PSRAM, and NOR Flash with configurable timing.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 pins. Pin functions validated per STMicroelectronics DS8669 Rev 11, Section 4 "Pin descriptions" and Table 7 "STM32L162xD pin definitions".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M3 microcontroller applications.

Compared with STM32L162VDT6, STM32L432KCU6 trades EEPROM and LCD integration for FPU and lower active power, while STM32L152RET6 offers more memory but removes USB and LCD-making STM32L162VDT6 optimal for display-equipped, USB-configurable, EEPROM-dependent metering designs.

Availability

STM32L162VDT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and environmental data loggers requiring stable component supply across extended product lifecycles.

Supply support for STM32L162VDT6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering intelligent power, sensing, and control solutions for automotive, industrial, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and secure firmware execution-designed specifically for metering, wearables, and energy-harvesting systems.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32L162VDT6 achieves a maximum CPU frequency of 32 MHz. At this speed, typical Run mode current consumption is 230 µA/MHz when executing code from Flash, resulting in ~7.4 mA total. This value assumes VDD = 3.3 V, ambient temperature of 25°C, and all peripherals disabled except core logic and Flash interface.

Does the STM32L162VDT6 support external memory interfaces, and what types are compatible?

Yes, it integrates a Flexible Static Memory Controller (FSMC) supporting asynchronous and synchronous non-multiplexed/multiplexed interfaces. Compatible memories include SRAM, PSRAM, and NOR Flash with configurable address/data bus widths (8/16-bit), wait states, and timing parameters defined in DS8669 Section 3.8 and Table 36–43.

How many capacitive sensing channels does the STM32L162VDT6 support, and what is the implementation method?

The device supports up to 34 capacitive sensing channels using its built-in touch sensing controller (TSC). It employs charge-transfer acquisition with spread-spectrum modulation and hardware filtering, eliminating the need for external RC networks or dedicated touch ICs-enabling direct electrode connection to GPIO pins configured as TSC channels.

Is the 12 KB EEPROM truly erasable and writable during application runtime, and what endurance is guaranteed?

Yes, the 12 KB EEPROM is fully accessible during runtime with byte/word erase and write operations. ST specifies 100,000 write/erase cycles minimum and 20-year data retention at 55°C (DS8669 Section 6.3.9 and Table 34–35), with ECC protection ensuring bit-error correction during read-after-write verification.