STMicroelectronics STM32L162VDY6XTR

Overview

STM32L162VDY6XTR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 384 KB Flash with ECC, 80 KB SRAM, 16 KB true EEPROM, integrated LCD controller (8×40 segments), USB 2.0 interface, and hardware AES-128 encryption. It operates from 1.65 V to 3.6 V across –40 °C to +105 °C and targets battery-powered industrial sensors and portable medical devices requiring long runtime and secure data handling.

For engineers reviewing the STM32L162VDY6XTR datasheet, STM32L162VDY6XTR pinout, STM32L162VDY6XTR application, or STM32L162VDY6XTR equivalent, key selection criteria include ultra-low standby current (290 nA), dual 12-bit ADCs (1 Msps, up to 40 channels), dual DACs with buffers, embedded RTC with calibration, and 102 5V-tolerant I/Os supporting capacitive touch sensing.

Technical Context

The STM32L162VDY6XTR implements a dual-bank Flash architecture enabling Read-While-Write (RWW) operation, critical for firmware updates without halting real-time functions. Its low-power strategy integrates dynamic voltage scaling, multiple clock sources (including 32 kHz RTC oscillator with ±10 ppm accuracy and 16 MHz factory-trimmed RC), and five distinct power modes-Run, Sleep, Low-power Run, Stop, and Standby-with sub-µA retention states.

Peripherals are optimized for energy efficiency: the 12-bit ADC achieves 1 Msps at 1.8–3.6 V with programmable sampling time; two operational amplifiers support rail-to-rail input/output and configurable gain; and the LCD driver includes built-in step-up converter and blinking control, eliminating external components in segment-based displays.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; RoHS-compliant, moisture sensitivity level 3 (MSL3). Pinout validated per STMicroelectronics DocID027268 Rev 4, Figure 3 and Table 7.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L162VDY6XTR, the STM32L476RGY6TR trades ultra-low-power modes and integrated LCD for higher compute density, while the EFM32PG12B500F1024GL125 sacrifices USB and display support to achieve deeper sleep states-making the STM32L162VDY6XTR uniquely balanced for LCD-equipped, USB-configurable, security-aware edge sensors.

Availability

STM32L162VDY6XTR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and low-power human interface modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for STM32L162VDY6XTR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust security, and rich analog integration-specifically engineered for metering, wearable health devices, and energy-harvesting systems.

FAQ

What is the maximum operating frequency and core type of the STM32L162VDY6XTR?

The STM32L162VDY6XTR features an Arm Cortex-M3 core rated for up to 32 MHz operation. Its performance is specified at 1.25 DMIPS/MHz (Dhrystone 2.1), delivering deterministic real-time execution with memory protection unit (MPU) support. The maximum frequency is achievable across the full 1.65–3.6 V supply range and –40 °C to +105 °C temperature range, subject to dynamic voltage scaling settings.

Does the STM32L162VDY6XTR support hardware encryption, and what algorithm is implemented?

Yes, the STM32L162VDY6XTR includes a dedicated hardware AES-128 encryption/decryption accelerator compliant with FIPS-197. It supports ECB, CBC, CTR, and GCM modes with zero CPU cycle overhead during cryptographic operations. Key management is handled via protected registers, and the 96-bit unique device ID enables secure key derivation for firmware authentication and data integrity.

How many I/O pins are 5V tolerant, and what is the significance of this feature?

All 102 general-purpose I/Os on the STM32L162VDY6XTR are 5V tolerant-even when VDD is as low as 1.8 V. This eliminates the need for external level-shifting circuitry when interfacing with legacy 5V sensors, actuators, or logic families, reducing BOM cost and PCB complexity. Tolerance is guaranteed per ST's electrical characteristics (Section 6.3.13, DocID027268 Rev 4).

What LCD capabilities does the STM32L162VDY6XTR provide, and how is contrast controlled?

The STM32L162VDY6XTR integrates an LCD controller supporting up to 8 commons × 40 segments. Contrast is adjusted digitally via register-controlled voltage division of the internal step-up converter output (VLCD), which generates 2.4–3.6 V from VDD. No external resistor network or external boost IC is required, simplifying design for segment-based displays in utility meters and portable instruments.