STMicroelectronics STM32L162VCH6

Overview

STM32L162VCH6 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, 12-bit ADC (1 Msps, 25 channels), and 12-bit dual DAC - deployed in battery-powered medical monitors and portable industrial data loggers.

For engineers reviewing the STM32L162VCH6 datasheet, STM32L162VCH6 pinout, STM32L162VCH6 application, or STM32L162VCH6 equivalent, key selection criteria include standby current (0.29 µA), AES-128 hardware acceleration, LCD step-up converter integration, and 70 I/Os with 5V tolerance - critical for energy-constrained human-interface and sensor-edge designs.

Technical Context

The device implements dynamic voltage scaling across six low-power modes (Run, Sleep, Low-power Run, Stop, Standby, VBAT), enabling sub-µA retention with RTC and backup registers active. Its clock system integrates five oscillators - including factory-trimmed 16 MHz HSI (±1%), 32 kHz LSE for RTC calibration, and PLL for USB 48 MHz generation - all managed via RCC and PWR peripherals.

Analog subsystem includes two rail-to-rail operational amplifiers, two ultra-low-power comparators with window mode and wake-up capability, and a temperature sensor with ±1.5°C accuracy over –40°C to 105°C - all functional down to 1.8 V supply, supporting precision sensing without external signal conditioning.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–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 STM32L162VCH6, the STM32L432KCU6 trades LCD/ECC-EEPROM for FPU and lower Stop-mode current, while EFM32GG11B820F2048GQ64 sacrifices USB and display integration for deeper sleep and larger memory - making STM32L162VCH6 uniquely suited for compact, battery-powered instrument displays requiring secure, long-life non-volatile storage.

Availability

STM32L162VCH6 is available at Aetrix Electronics and suitable for portable medical monitors, smart utility meters, and industrial data loggers requiring stable component supply, extended lifecycle support, and guaranteed traceability through ST's qualified manufacturing flow.

Supply support for STM32L162VCH6 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding multi-year battery life, robust security, and rich analog integration - with the L162 variant specifically optimized for LCD-based instrumentation and secure data logging.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L162VCH6 operates up to 32 MHz with 185 µA/MHz current draw in Run mode when executing code from Flash. At full speed, typical consumption is 5.92 mA (32 MHz × 185 µA/MHz), verified per DS8928 Rev 12 Section 6.3.4. This includes active core, memory, and peripheral clocks - excluding dynamic loads like LCD or USB transceivers.

Does the device support hardware encryption for firmware updates?

Yes - it integrates a dedicated AES-128 bit encryption hardware accelerator compliant with FIPS-197, enabling zero-CPU-overhead encryption/decryption of firmware images and secure key storage in protected memory sectors. The 96-bit unique ID further supports device-specific key derivation per DS8928 Section 3.16.

Can the LCD controller drive both static and multiplexed segment displays?

Yes - the integrated LCD controller supports static, 2-, 3-, and 4-multiplex configurations, driving up to 8 commons and 40 segments. It includes programmable contrast control, blinking mode, and an on-chip step-up converter generating VLCD from VDD - eliminating external charge pumps for 3.3 V systems per DS8928 Section 3.9.

What are the wakeup sources available from Standby mode?

Three dedicated wakeup pins (WKUP1–WKUP3), RTC alarm, tamper event, and external reset (NRST) can exit Standby mode. Each WKUP pin supports rising/falling edge detection and retains state during standby, enabling button-press or motion-triggered recovery with 0.29 µA quiescent current per DS8928 Section 3.1 and Table 24.