STMicroelectronics STM32L162QDH6DTR

Overview

STM32L162QDH6DTR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller in UFBGA132 package, featuring 384KB Flash with ECC, 48KB SRAM, 12KB true EEPROM with ECC, integrated LCD controller (8×40 segments), USB 2.0 interface, and AES-128 hardware 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 endpoints requiring long runtime and secure firmware updates.

For engineers reviewing the STM32L162QDH6DTR datasheet, STM32L162QDH6DTR pinout, STM32L162QDH6DTR application, or STM32L162QDH6DTR equivalent, key selection criteria include ultra-low-power Stop mode current (0.475 µA), 12-bit ADC with up to 40 channels at 1 Msps, dual 12-bit DACs with buffers, on-chip step-up converter for LCD bias, and 102 5V-tolerant I/Os mappable to 16 external interrupt vectors.

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 wake-up latency. Its memory subsystem includes dual-bank Flash enabling Read-While-Write (RWW), ECC-protected SRAM and EEPROM, and FSMC supporting SRAM, PSRAM, and NOR Flash expansion.

The analog subsystem integrates three operational amplifiers, two ultra-low-power comparators with window mode and wakeup capability, a temperature sensor, and internal voltage reference (VREFINT). Clock architecture combines HSE (1–24 MHz), LSE (32.768 kHz), HSI (16 MHz ±1%), LSI (37 kHz), MSI (65 kHz–4.2 MHz), and a USB PLL generating 48 MHz.

Key Specifications

Pinout & Package

STM32L162QDH6DTR uses a 132-ball UFBGA package (7 mm × 7 mm, 0.5 mm pitch) with 116 fast I/Os - including 102 5V-tolerant pins - and dedicated power/ground ball layout optimized for low-noise analog operation and EMI robustness.

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 STM32L162QDH6DTR, STM32L152RCT6 trades LCD capability and memory size for compact packaging and lower BOM cost, while STM32L432KCU6 shifts focus toward computational performance over ultra-low-power persistence and integrated display support.

Availability

STM32L162QDH6DTR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, and industrial handheld terminals requiring stable component supply, long-term lifecycle assurance, and full production traceability.

Supply support for STM32L162QDH6DTR 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, MEMS, and automotive semiconductors.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust security, and rich analog integration - especially in wearables, metering, and IoT edge nodes.

FAQ

What is the maximum operating frequency of the STM32L162QDH6DTR?

The STM32L162QDH6DTR runs at up to 32 MHz using its internal HSI (16 MHz ±1%) with PLL or external HSE (1–24 MHz). Dynamic voltage scaling adjusts core voltage to maintain stability across this range while minimizing active power consumption.

Does STM32L162QDH6DTR support hardware encryption?

Yes - it includes a dedicated AES-128 hardware accelerator supporting ECB, CBC, CTR, and GCM modes. This offloads cryptographic operations from the CPU, enabling secure boot verification, encrypted firmware updates, and protected data-at-rest in EEPROM or Flash.

How many I/O pins are 5V tolerant on this device?

102 of the 116 general-purpose I/Os are 5V tolerant when VDD is ≥2.0 V. This allows direct interfacing with legacy 5V peripherals without level-shifting components, simplifying design and reducing BOM count in mixed-voltage systems.

Can the internal LCD controller drive graphic displays?

No - the integrated LCD controller supports only static or multiplexed segment-type displays (up to 8 commons × 40 segments). It does not support pixel-addressable graphic LCDs or TFT panels, which require external controllers or higher-bandwidth interfaces like FSMC or SPI.