STMicroelectronics STM32F103ZEH6TR

Overview

STM32F103ZEH6TR from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 512 KB Flash, 64 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and triple 12-bit ADCs with 21 channels - deployed in industrial motor control systems requiring real-time PWM generation, analog sensing, and fieldbus communication.

For engineers reviewing the STM32F103ZEH6TR datasheet, STM32F103ZEH6TR pinout, STM32F103ZEH6TR application, or STM32F103ZEH6TR equivalent, key selection criteria include LFBGA144 package compatibility, 72 MHz CPU clock with zero-wait-state Flash execution, 112 I/Os with 5 V tolerance, and integrated USB/CAN dual-protocol support for embedded gateway designs.

Technical Context

The device implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide, executing at up to 72 MHz with 1.25 DMIPS/MHz (Dhrystone 2.1). It integrates nested vectored interrupt controller (NVIC) supporting 84 interrupt channels and programmable priority levels.

Its peripheral set includes three 12-bit ADCs with triple-sample-and-hold, two 12-bit DACs, 12-channel DMA supporting memory-to-peripheral transfers, and flexible static memory controller (FSMC) with four chip-select outputs for NOR/PSRAM/NAND expansion - enabling direct connection to external displays or industrial I/O modules.

Key Specifications

Pinout & Package

LFBGA144 package (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, ECOPACK® certified - optimized for high-density PCB layouts with thermal pad for enhanced power dissipation in continuous motor control operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F103VET6, the ZEH6TR adds FSMC and LCD interface for display integration; versus STM32F407VGT6, it delivers identical CAN/USB functionality at lower power and cost - making it optimal for resource-constrained industrial gateways where deterministic real-time response matters more than raw compute throughput.

Availability

STM32F103ZEH6TR is available at Aetrix Electronics and suitable for industrial motor control, smart energy gateways, medical infusion pumps, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for STM32F103ZEH6TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F103 series belongs to ST's mainstream Cortex-M3 portfolio, engineered specifically for cost-sensitive, high-reliability embedded applications demanding rich analog integration, real-time responsiveness, and long-term supply assurance in harsh environments.

FAQ

What is the maximum operating temperature range for STM32F103ZEH6TR?

The STM32F103ZEH6TR is rated for industrial temperature range: −40°C to +85°C. This is confirmed in Section 5.3.1 of DS5792 Rev 13, specifying ambient operating conditions and thermal characteristics for LFBGA144 packages. The device maintains full functionality across this range, including accurate ADC/DAC operation and stable USB/CAN timing.

Does STM32F103ZEH6TR support external memory interfaces beyond FSMC?

No - the only external memory interface is the Flexible Static Memory Controller (FSMC), which supports asynchronous/synchronous NOR, PSRAM, NAND, and CompactFlash. There is no SDIO-based external RAM interface or Octo-SPI support; those features appear only in later STM32 families (e.g., F4/F7/H7). FSMC is the sole path for off-chip memory expansion.

Can the internal 8 MHz RC oscillator be used for USB clock generation?

No - USB full-speed operation requires a precise 48 MHz clock derived from the PLL, which must be fed by either the HSE (4–16 MHz crystal) or HSI (8 MHz RC) *after calibration*. While the HSI can serve as PLL source, ST specifies that USB timing compliance requires HSE-based PLL configuration in production designs per Section 5.3.7 and USB electrical specs in Table 58 of DS5792.

How many pins on STM32F103ZEH6TR support external interrupt capability?

All 112 GPIO pins can be configured as external interrupt sources via the EXTI line mapping - each of the 16 EXTI lines connects to up to 7 GPIO pins (one per port), allowing any GPIO to trigger interrupts. This is documented in Section 2.3.8 (EXTI) and Table 5 of DS5792, confirming full port-to-EXTI remapping capability across all supported packages including LFBGA144.