STMicroelectronics STM32L152ZDT6

Overview

STM32L152ZDT6 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), and USB 2.0 interface. It operates from 1.65 V to 3.6 V across –40°C to +105°C and delivers 33.3 DMIPS at up to 32 MHz, targeting battery-powered industrial sensors and portable medical devices.

For engineers reviewing the STM32L152ZDT6 datasheet, STM32L152ZDT6 pinout, STM32L152ZDT6 application, or STM32L152ZDT6 equivalent, key selection criteria include its 116 fast I/Os (102 5V-tolerant), ultra-low-power Stop mode (0.475 µA), dual 12-bit DACs with output buffers, 12-bit ADC with 40-channel multiplexing, and integrated operational amplifiers for sensor signal conditioning.

Technical Context

The STM32L152ZDT6 implements dynamic voltage scaling and multiple low-power modes-Standby (305 nA), Stop (0.475 µA), and Low-power Run (11 µA)-with hardware-accelerated wakeup in 8 µs. Its memory subsystem includes dual-bank Flash enabling Read-While-Write (RWW) and 12 KB true EEPROM with error correction for robust data logging.

Peripherals are tightly coupled to power management: the LCD controller supports contrast adjustment and blinking without CPU intervention; the USB 2.0 PHY uses an internal 48 MHz PLL; and the 3x op-amps, 2x ultra-low-power comparators, and temperature sensor operate down to 1.8 V, enabling autonomous analog front-end operation in deep-sleep states.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm) package with 144-pin quad flat lead frame, rated for industrial temperature range (–40°C to +105°C) and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152ZDT6, the STM32L432KCU6 trades LCD/ECC EEPROM for FPU and security features, while the STM32L152RCT6 retains identical architecture but sacrifices I/O count and memory for compactness-making ZDT6 optimal for feature-rich, display-integrated ultra-low-power systems.

Availability

STM32L152ZDT6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial wireless sensor nodes, and portable diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32L152ZDT6 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, emphasizing energy efficiency, integrated analog peripherals, and long-term reliability for battery-operated and energy-harvesting systems.

FAQ

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

The STM32L152ZDT6 achieves a maximum CPU frequency of 32 MHz. At this speed, typical current consumption is 230 µA/MHz when executing code from Flash, resulting in approximately 7.36 mA total. This value assumes VDD = 3.3 V, ambient temperature of 25°C, and all peripherals disabled except core logic.

Does the STM32L152ZDT6 support hardware encryption or secure boot?

No, the STM32L152ZDT6 does not include dedicated hardware encryption engines (AES, DES, SHA) or secure boot ROM. It relies on software-based cryptographic libraries and standard bootloader mechanisms. For hardware security, consider the STM32L4 or STM32H7 series, which integrate cryptographic accelerators and secure firmware installation.

Can the integrated LCD controller drive graphic displays or only segment-based ones?

The LCD controller supports only static and multiplexed segment-type displays (up to 8 commons × 40 segments). It lacks a frame buffer or pixel-addressable interface, so it cannot drive dot-matrix or graphic LCDs (e.g., 128×64 OLEDs). For graphic displays, external controllers or MCUs with parallel RGB/LTDC interfaces are required.

What are the key differences between STM32L152ZDT6 and STM32L152ZET6?

The STM32L152ZET6 substitutes the 12 KB EEPROM with 16 KB of additional SRAM and removes the LCD controller. Both share identical Flash size (384 KB), CPU, and most peripherals. The ZDT6 is optimized for display-integrated, data-logging applications; the ZET6 suits RAM-intensive tasks like protocol stacks or audio buffering where LCD and EEPROM are unnecessary.