STMicroelectronics STM32L162VCT6D

Overview

STM32L162VCT6D from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller in LQFP100 package, featuring 256 KB Flash with ECC, 32 KB SRAM, 8 KB true 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 portable instrumentation and smart metering systems requiring long runtime and secure data handling.

For engineers reviewing the STM32L162VCT6D datasheet, STM32L162VCT6D pinout, STM32L162VCT6D application, or STM32L162VCT6D equivalent, this page delivers verified technical context, low-power mode timing values, peripheral integration depth (e.g., dual 12-bit DACs, 2 op-amps, 2 ultra-low-power comparators), and real-world use-case mapping for embedded design validation and BOM selection.

Technical Context

The STM32L162VCT6D implements dynamic voltage scaling (DVS) with three operating voltage ranges (1.8–3.6 V, 1.65–3.6 V, and 1.65–2.2 V) enabling adaptive power/performance trade-offs. Its Cortex-M3 core runs up to 32 MHz with 1.25 DMIPS/MHz and includes a memory protection unit (MPU) for secure task isolation in RTOS environments.

Low-power operation is architecturally enforced: Standby mode draws just 0.29 µA (with 3 wakeup pins) and Stop mode consumes 0.44 µA (16 wakeup lines), both retaining full SRAM and register state. The integrated LCD driver includes on-chip step-up converter and contrast control, eliminating external bias components for segment-based displays.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; 100-pin quad flat layout optimized for thermal dissipation and routing density in space-constrained industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L162VCT6D, the STM32L476VGT6 trades LCD integration and ultra-low standby for compute headroom, while the STM32L072VZT6 reduces feature set and cost but forfeits display and USB capabilities - making the L162 optimal for secure, display-equipped, battery-constrained systems.

Availability

STM32L162VCT6D is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial wireless sensors, and asset tracking beacons requiring stable component supply, long-term lifecycle assurance, and guaranteed traceability.

Supply support for STM32L162VCT6D 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-grade components since 1987.

The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and hardware security - specifically engineered for metering, wearables, and IoT edge nodes operating under strict energy budgets.

FAQ

What is the maximum operating frequency and corresponding power supply range for STM32L162VCT6D?

The STM32L162VCT6D achieves its maximum 32 MHz CPU frequency only within the 2.4–3.6 V supply range. At 1.8–2.4 V, max frequency drops to 24 MHz; below 1.8 V (down to 1.65 V), it is limited to 16 MHz. These constraints are enforced by the embedded voltage regulator and dynamic voltage scaling logic to ensure timing closure and reliability across temperature.

Does STM32L162VCT6D support USB device functionality without an external crystal?

Yes. The device integrates a 48 MHz PLL fed by its internal 16 MHz HSI RC oscillator, enabling full-speed USB 2.0 device operation without an external crystal. This reduces BOM cost and board space, though for highest USB timing accuracy (e.g., audio class), an external 8/12 MHz crystal may be used with the PLL for tighter jitter control.

How does the integrated LCD controller handle contrast adjustment and power efficiency?

The LCD controller provides software-configurable contrast via internal resistor ladder (8-bit resolution) and supports blinking mode for visual alerts. Its on-chip step-up converter generates VLCD from VDD, eliminating external boost ICs. Power efficiency is enhanced by automatic VLCD shutdown during Stop/Standby modes and dynamic segment driving based on content.

What are the key differences between the EEPROM and Flash memory in STM32L162VCT6D?

The 8 KB true EEPROM supports byte-level erase/write (100k cycles, 20-year retention) and retains data during power loss - ideal for infrequently updated parameters like calibration coefficients. The 256 KB Flash requires page erasure (256 bytes), offers 10k cycles, and hosts executable code and bulk data. Both include ECC for bit-error correction, ensuring data integrity in harsh environments.