STMicroelectronics STM32L162RDT6TR

Overview

STM32L162RDT6TR 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 delivers 230 µA/MHz in Run mode - deployed in battery-powered medical sensors and portable industrial data loggers requiring long-term autonomous operation.

For engineers reviewing the STM32L162RDT6TR datasheet, STM32L162RDT6TR pinout, STM32L162RDT6TR application, or STM32L162RDT6TR equivalent, key selection criteria include standby current (305 nA), RTC-enabled Stop mode (1.15 µA), 12-bit ADC with 40-channel multiplexing, dual 12-bit DACs, and LQFP64 package compatibility with legacy STM32L1x designs.

Technical Context

The STM32L162RDT6TR implements dynamic voltage scaling and multiple low-power modes (Run, Sleep, Low-power Run, Stop, Standby) with sub-µA retention states. Its Cortex-M3 core runs up to 32 MHz with MPU, supported by a multi-source clock system including HSE (1–24 MHz), LSE (32.768 kHz), HSI (16 MHz ±1%), LSI (37 kHz), and MSI (65 kHz–4.2 MHz).

Analog subsystem includes three operational amplifiers, two ultra-low-power comparators with window mode and wakeup capability, 12-bit ADC (1 Msps, 40 channels), and dual 12-bit DACs with output buffers - all functional down to 1.8 V supply. Memory interface supports SRAM, PSRAM, and NOR Flash via FSMC.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40°C to 105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L162RDT6TR, STM32L432KCU6 trades LCD/ECC for higher compute and deeper sleep, while STM32L072RBT6 sacrifices integration and memory for cost - making the L162 optimal for display-equipped, security-aware, long-life portable instruments.

Availability

STM32L162RDT6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical diagnostics, industrial wireless sensors, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for STM32L162RDT6TR 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 automotive semiconductors since 1987.

The STM32L1 series targets ultra-low-power embedded applications demanding decade-long battery life, integrated analog peripherals, and secure firmware execution - optimized for portable instrumentation, energy metering, and wearable health devices.

FAQ

What is the maximum operating frequency and core type of the STM32L162RDT6TR?

The STM32L162RDT6TR features an Arm® Cortex®-M3 32-bit core rated for up to 32 MHz operation. It achieves 1.25 DMIPS/MHz (Dhrystone 2.1) and includes a Memory Protection Unit (MPU) for secure task isolation. The maximum frequency is sustained across the full industrial temperature range (–40°C to 105°C) under 1.8–3.6 V supply conditions.

Does the STM32L162RDT6TR support hardware encryption, and what algorithms are implemented?

Yes, it integrates a dedicated hardware AES-128 encryption accelerator compliant with FIPS-197. The module supports ECB, CBC, CTR, and GCM modes with zero CPU overhead, enabling real-time encryption of sensor payloads or secure boot verification. No external crypto IC is needed for basic TLS handshake or firmware signature validation.

What LCD capabilities does the STM32L162RDT6TR provide, and what is the maximum segment count?

The device includes a built-in LCD controller supporting up to 8 commons and 40 segments (320 segments total), with programmable contrast, blinking, and internal step-up converter. It drives static, multiplexed (1/2–1/8 bias), and memory-mapped displays directly - eliminating external bias generators and reducing PCB layer count in portable medical and metering displays.

How many analog-to-digital converter (ADC) channels does the STM32L162RDT6TR support, and what is its resolution and speed?

The STM32L162RDT6TR integrates a single 12-bit ADC with up to 40 input channels and 1 Msps sampling rate. It operates down to 1.8 V supply and includes internal temperature sensor and VREFINT reference. Channel sequencing, scan mode, and DMA-triggered conversions are supported - enabling simultaneous multi-sensor acquisition in battery-constrained systems.