STMicroelectronics STM32F103ZCT6TR

Overview

STM32F103ZCT6TR from STMicroelectronics is a high-density performance-line Arm® Cortex®-M3 microcontroller featuring 72 MHz operation, 512 KB Flash, 64 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and triple 12-bit ADCs with 21 input channels. It integrates 11 timers-including motor-control PWM timers with dead-time generation-and supports up to 112 I/Os in LQFP144 package for industrial control and motor drive applications.

For engineers reviewing the STM32F103ZCT6TR datasheet, STM32F103ZCT6TR pinout, STM32F103ZCT6TR application, or STM32F103ZCT6TR equivalent, key selection criteria include Flash/SRAM capacity, USB+CAN dual-interface capability, ADC channel count and sampling rate, motor-control timer features, and LQFP144 thermal/power delivery suitability.

Technical Context

This MCU implements an Arm Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide. Its memory subsystem includes 512 KB of embedded Flash (with ECC support), 64 KB SRAM, and a Flexible Static Memory Controller (FSMC) supporting NOR/PSRAM/NAND and CompactFlash.

The peripheral set is optimized for real-time embedded control: dual CAN 2.0B controllers with dedicated message RAM, USB 2.0 FS PHY with internal transceiver, three independent 12-bit ADCs (1 µs conversion, triple-sample-and-hold), two 12-bit DACs, and four advanced timers with complementary outputs and emergency stop inputs-enabling precise field-oriented control (FOC) of 3-phase motors.

Key Specifications

Pinout & Package

LQFP144 package (20 × 20 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Thermal resistance θ_JA = 30 °C/W (JEDEC standard board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VET6, the ZCT6TR provides 12 additional I/Os and FSMC for external memory expansion; versus STM32F407VGT6, it offers lower power, simpler toolchain certification, and proven reliability in long-lifecycle industrial deployments-without unnecessary compute overhead.

Availability

STM32F103ZCT6TR is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and energy metering gateways requiring stable component supply across extended production lifecycles.

Supply support for STM32F103ZCT6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs.

This part belongs to the STM32F1 "Performance Line" product family, designed specifically for cost-sensitive, high-reliability industrial control applications demanding rich analog/motor peripherals and dual high-speed interfaces (USB + CAN) in a single chip.

FAQ

What is the maximum operating temperature range for STM32F103ZCT6TR?

The STM32F103ZCT6TR 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 under which all electrical characteristics-including ADC accuracy, Flash endurance, and USB timing-are guaranteed.

Does STM32F103ZCT6TR support USB device mode without external components?

Yes. The part integrates a full-speed USB 2.0 transceiver with internal pull-up resistors and voltage regulator. Only a single 1.5 kΩ pull-up on D+ (PA12) and standard USB termination capacitors are required-no external PHY or level shifter needed per Section 2.3.24 and Figure 47 of the datasheet.

How many CAN message objects can be handled simultaneously in hardware?

The integrated bxCAN controller supports 14 dedicated message mailboxes (3 transmit, 2 receive FIFOs with 3 entries each, plus 3 dedicated single-mailbox registers). All are managed in hardware with automatic ID filtering and priority arbitration-detailed in Section 2.3.23 and Register Map RM0008.

Is the internal 8 MHz RC oscillator factory-trimmed, and what is its accuracy?

Yes. The HSI oscillator is factory-trimmed to ±1% accuracy at 25°C and 3.3 V, with typical drift of ±2% over the full temperature and voltage range (–40°C to +85°C, 2.0–3.6 V), as specified in Table 25 of DS5792 Rev 13.