STMicroelectronics STM32L162QDH6TR

Overview

STM32L162QDH6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller in UFBGA132 (7 × 7 mm) package, featuring 384 KB Flash with ECC, 48 KB SRAM, 12 KB true EEPROM with ECC, integrated LCD driver (8×40 segments), USB 2.0 interface, and AES-128 hardware encryption. 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 endpoints requiring long runtime and secure firmware updates.

For engineers reviewing the STM32L162QDH6TR datasheet, STM32L162QDH6TR pinout, STM32L162QDH6TR application, or STM32L162QDH6TR equivalent, key selection criteria include standby current (305 nA), LCD segment drive capability, USB 2.0 support with internal 48 MHz PLL, AES acceleration, and 12-bit ADC with up to 40 channels at 1 Msps - all validated for operation down to 1.8 V analog supply.

Technical Context

This MCU implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) with sub-µA retention states and 8 µs wakeup latency. Its Arm Cortex-M3 core runs at up to 32 MHz with 1.25 DMIPS/MHz performance and includes a memory protection unit (MPU) for secure task isolation.

The peripheral set integrates a full-featured LCD controller with on-board step-up converter and contrast control, three operational amplifiers, two 12-bit DACs with output buffers, and dual ultra-low-power comparators with window mode and RTC wakeup capability - all designed for direct sensor signal conditioning and display control without external components.

Key Specifications

Pinout & Package

STM32L162QDH6TR uses a 132-pin UFBGA package (7 × 7 mm, 0.5 mm pitch) with 116 fast I/Os (102 5V-tolerant), all mappable to 16 external interrupt vectors. The package supports high-density PCB layouts for space-constrained portable devices while maintaining thermal reliability up to +105°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L162QDH6TR, STM32L476RG trades LCD/ECC-EEPROM integration for higher compute throughput and memory, while EFM32GG11B sacrifices interface richness for deeper sub-nA sleep - making STM32L162QDH6TR optimal for compact, display-equipped, battery-sealed devices needing secure, persistent configuration storage.

Availability

STM32L162QDH6TR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for STM32L162QDH6TR 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust security, and integrated analog peripherals - specifically engineered for metering, wearables, and environmental monitoring systems operating across wide temperature ranges.

FAQ

What is the maximum operating frequency and core type of STM32L162QDH6TR?

The STM32L162QDH6TR features an Arm Cortex-M3 core rated for up to 32 MHz operation, delivering 1.25 DMIPS/MHz (Dhrystone 2.1). Its maximum frequency is constrained by dynamic voltage scaling and supply voltage: 32 MHz at 3.0–3.6 V, 24 MHz at 2.4–3.0 V, and 16 MHz at 1.65–2.4 V - verified per DS8669 Rev 11 Section 6.3.1.

Does STM32L162QDH6TR support USB without an external PHY?

Yes - it integrates a full-speed USB 2.0 transceiver with internal 48 MHz PLL, supporting USB device mode without external PHY components. The D+/D− pins (PD0/PD1) connect directly to the USB connector, and the bootloader supports USB DFU for firmware updates - confirmed in Section 3.19.6 and Table 7 of DS8669 Rev 11.

How many LCD segments can STM32L162QDH6TR drive, and what voltage support does it provide?

It drives up to 8 commons and 40 segments (8×40 configuration) with integrated step-up converter, enabling LCD bias voltages up to 5.3 V from a 1.8–3.6 V supply. Contrast is adjustable via software-controlled voltage divider, and blinking mode is supported through dedicated registers - detailed in Section 3.10 and Table 64 of DS8669 Rev 11.

What is the endurance and retention specification for the 12 KB EEPROM?

The 12 KB true EEPROM supports 400,000 write/erase cycles and guarantees 20-year data retention at 85°C ambient temperature, with built-in ECC for single-bit correction and double-bit detection. This is specified in Table 34 and Table 35 of DS8669 Rev 11, and applies across the full industrial temperature range (–40°C to +105°C).