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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32F205ZCT6

Name: STM32F205ZCT6
Brand: STMicroelectronics
SKU: STM32F205ZCT6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32F205ZCT6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 144-LQFP

Datasheet:: STM32F205ZCT6.pdf

Description:: IC MCU 32BIT 256KB FLASH 144LQFP

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Product details

Overview

STM32F205ZCT6 from STMicroelectronics is a 32-bit Arm® Cortex®-M3 microcontroller operating at up to 120 MHz, featuring 256 KB Flash, 64 + 4 KB SRAM, USB OTG HS/FS with dedicated DMA, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and dual CAN 2.0B interfaces - deployed in industrial gateways requiring real-time protocol bridging and deterministic network timing.

For engineers reviewing the STM32F205ZCT6 datasheet, STM32F205ZCT6 pinout, STM32F205ZCT6 application, or STM32F205ZCT6 equivalent, key selection criteria include Ethernet MAC+DMA coherency, dual-CAN bus arbitration capability, DCMI camera interface timing (48 MB/s), ART Accelerator™-enabled zero-wait-state Flash execution, and VBAT-backed RTC with 20×32-bit registers for secure time-stamped logging.

Technical Context

The STM32F205ZCT6 integrates a Cortex-M3 core with Memory Protection Unit (MPU) and Adaptive Real-Time Accelerator (ART Accelerator™) enabling deterministic 0-wait-state execution from Flash at 120 MHz. Its multi-AHB bus matrix concurrently services CPU, DMA, and peripheral access without contention.

It features a dedicated Ethernet MAC with IEEE 1588v2 hardware timestamping, dual CAN 2.0B controllers with programmable bit timing, and a parallel digital camera interface (DCMI) supporting 8–14-bit YUV/RGB formats at up to 48 MB/s - all synchronized via a centralized clock tree with four PLLs (main, audio, USB, and system).

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M3 @ 120 MHz; enables 150 DMIPS performance with MPU for RTOS task isolation.
Memory	256 KB Flash + 64 KB SRAM + 4 KB backup SRAM; supports XIP execution and low-latency DMA transfers.
Ethernet Interface	10/100 MAC with dedicated DMA and IEEE 1588v2 hardware timestamping; eliminates software timestamp jitter in time-critical protocols.
USB Support	OTG HS/FS with on-chip full-speed PHY and ULPI interface; enables simultaneous host/device roles and high-bandwidth peripheral attachment.
Camera Interface	DCMI parallel interface (8–14-bit) with 48 MB/s max throughput; directly captures raw sensor data without CPU intervention via DMA.
Analog Peripherals	Three 12-bit ADCs (up to 6 MSPS in triple interleaved mode) + two 12-bit DACs; supports synchronized multi-channel acquisition and waveform generation.
Communication Interfaces	2× CAN 2.0B, 3× I²C, 4× USART, 2× UART, 3× SPI (30 Mbit/s), SDIO, and I²S; enables concurrent industrial fieldbus, wireless modem, and audio subsystem control.

Pinout & Package

LQFP144 (20 × 20 mm) package with 144 pins, 5 V-tolerant I/Os (138 pins), and dedicated VCAP1/VCAP2 decoupling pins for internal regulator stability.

Pin/Terminal	Circuit Role	Design Meaning
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	136 fast I/Os (≤60 MHz), configurable as GPIO, EXTI, or AF functions; 138 pins 5 V-tolerant for mixed-voltage system interfacing.
PH0/PH1	HSE oscillator input/output	Connects external 4–26 MHz crystal; critical for Ethernet MAC clock derivation and USB HS PLL synchronization.
PC11–PC12, PD0–PD7	DCMI data bus (D0–D13)	14-bit parallel camera data path; supports hardware handshake (VSYNC, HSYNC, PIXCLK) for frame-accurate image capture.
PA1–PA7, PB8–PB9	Ethernet MAC signals (TXD0–TXD3, RXD0–RXD3, CRS, COL, etc.)	Dedicated RMII/MII pins; require controlled impedance routing to meet IEEE 802.3 timing for 100 Mbps operation.
PA11/PA12, PB14/PB15	USB OTG FS/HS physical layer	PA11/PA12 = FS D+/D−; PB14/PB15 = ULPI data bus for HS PHY; separate VBUS sensing and ID pin for OTG role negotiation.

Key Features

Feature	Design Value
ART Accelerator™	Eliminates Flash wait states at 120 MHz, enabling deterministic interrupt latency ≤12 cycles for hard real-time control loops.
Flexible Static Memory Controller (FSMC)	Supports NOR/NAND/PSRAM with 8/16-bit data bus and programmable timing; enables direct connection to external displays or legacy peripherals.
Dual CAN 2.0B controllers	Independent message RAMs and filters; allows simultaneous CANopen master/slave operation or redundant bus monitoring in automotive diagnostics.
Backup domain resources	VBAT-powered RTC + 20×32-bit backup registers + 4 KB backup SRAM; retains state across main power loss for tamper-proof event logging.
CRC calculation unit	Hardware-accelerated CRC-32 (IEEE 802.3) and CRC-8/16; offloads checksum computation from CPU during Ethernet frame or firmware update validation.

Applications

Industrial Ethernet Gateway

Smart Camera Node

Use Scenario: Protocol translation between Modbus TCP and CANopen in factory automation networks.

IC Role / Device Role / Timing Role: Central controller managing dual Ethernet and dual CAN interfaces with IEEE 1588v2 hardware timestamping for sub-microsecond synchronization.

Use Value: Eliminates software-based timestamping jitter, enabling deterministic cycle times ≤1 ms across distributed I/O nodes.

Use Scenario: Edge vision processing in surveillance systems using CMOS image sensors.

IC Role / Device Role / Timing Role: Image acquisition engine capturing 720p@30fps via DCMI, buffering frames in SRAM, and forwarding metadata over UART/USB.

Use Value: 48 MB/s DCMI bandwidth and triple-interleaved ADC support enable real-time light-metering and auto-exposure control without CPU overhead.

Medical Data Logger

Energy Monitoring Hub

Use Scenario: Battery-powered patient monitor recording ECG, SpO₂, and temperature with secure time stamping.

IC Role / Device Role / Timing Role: Low-power controller using Stop mode with VBAT-backed RTC and 4 KB backup SRAM to retain session data during sleep.

Use Value: 2.7 µA Stop mode current + hardware RTC calendar ensures >1-year battery life while maintaining traceable event timestamps.

Use Scenario: DIN-rail mounted meter aggregating current/voltage readings from CT/PT sensors via isolated SPI/UART.

IC Role / Device Role / Timing Role: High-accuracy analog front-end manager using three synchronized 12-bit ADCs with 6 MSPS aggregate sampling rate.

Use Value: Triple-interleaved ADC mode achieves effective 18 MSPS sampling for harmonic analysis up to 50th order in 50/60 Hz power systems.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32F207ZCT6	Same package and pinout; adds USB HS PHY and Ethernet PTP hardware acceleration (IEEE 1588v2 enhanced).	Required for precise time-synchronized packet injection in TSN-capable industrial switches.	Select when IEEE 1588v2 hardware timestamping accuracy <50 ns is mandatory and USB HS PHY integration reduces BOM count.
STM32H743ZIT6	Arm Cortex-M7 @ 480 MHz, dual-core option, 1 MB Flash, 1 MB SRAM, no DCMI, but adds JPEG codec and GPU.	Suitable for AI inference at edge with camera input via MIPI CSI-2 (not supported on F2 series).	Choose for higher compute throughput and advanced graphics; avoid if DCMI, dual CAN, or Ethernet MAC+DMA coherency are required.

Compared with STM32F205ZCT6, the STM32F207ZCT6 extends precision timing capabilities for TSN, while the STM32H743ZIT6 trades deterministic peripheral coherency for raw compute power - making the F205 optimal for cost-sensitive, latency-critical industrial connectivity where DCMI and dual CAN are essential.

Availability

STM32F205ZCT6 is available at Aetrix Electronics and suitable for industrial gateways, smart camera nodes, medical data loggers, and energy monitoring hubs requiring stable component supply and long-term production continuity.

Supply support for STM32F205ZCT6 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 components for industrial, automotive, and consumer markets.

The STM32F2 series targets high-performance industrial connectivity applications, emphasizing real-time Ethernet, dual CAN, USB OTG, and camera interface integration - optimized for deterministic protocol bridging and edge data acquisition.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32F205ZCT6?

The STM32F205ZCT6 operates at a maximum CPU frequency of 120 MHz, delivering 150 DMIPS (Dhrystone 2.1) performance with the ART Accelerator™ enabled. This is validated under 3.3 V supply and 25 °C ambient conditions per DS6329 Rev 18 Section 6.3.1. The MPU and 0-wait-state Flash execution ensure deterministic real-time behavior for RTOS-based applications.

Does the STM32F205ZCT6 support hardware-based IEEE 1588v2 timestamping for Ethernet packets?

Yes, the integrated 10/100 Ethernet MAC includes dedicated hardware timestamping compliant with IEEE 1588v2 Annex D, providing sub-microsecond precision for PTP event messages. This capability is independent of CPU load and requires no software timestamp insertion - confirmed in Section 3.26 and Table 6.3.26 of the datasheet.

How many I/O pins are 5 V-tolerant, and what is their maximum toggle speed?

138 I/O pins are 5 V-tolerant, including all GPIOs except those used for JTAG/SWD debug and specific analog inputs. Their maximum toggle speed is 60 MHz, verified under VDD = 3.3 V and CL = 30 pF per Section 6.3.16 of DS6329 Rev 18. This allows safe interfacing with legacy 5 V logic without level shifters.

What is the purpose and electrical requirement of the VCAP1 and VCAP2 pins?

VCAP1 and VCAP2 connect to external 2.2 µF ceramic capacitors that stabilize the internal voltage regulator's output. These pins must be decoupled within 5 mm of the MCU using X7R dielectric capacitors rated ≥6.3 V, as specified in Section 6.3.2 and Figure 13 of DS6329 Rev 18. Failure to meet this requirement causes unstable core voltage and unpredictable reset behavior.

STM32F205ZCT6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 144-LQFP

Series:: STM32F2

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M3

Core Size:: 32-Bit Single-Core

Speed:: 120MHz

Connectivity:: CANbus, I2C, IrDA, LINbus, MMC, SPI, UART/USART, USB OTG

Peripherals:: Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT

Number of I/O:: 114

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 100K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 3.6V

Data Converters:: A/D 24x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32F205ZCT6 FAQ

1.How can I place an order for STM32F205ZCT6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32F205ZCT6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32F205ZCT6 reliable?

The price and inventory of STM32F205ZCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F205ZCT6 is usually 5 days.

3.What payment methods are accepted for STM32F205ZCT6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F205ZCT6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32F205ZCT6?

STM32F205ZCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32F205ZCT6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32F205ZCT6?

For technical support, including STM32F205ZCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F205ZCT6 requirements.

6.How does Aetrix verify that STM32F205ZCT6 is sourced from the original manufacturer or authorized distributors?

All STM32F205ZCT6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F205ZCT6 meets industry standards.

7.What is the process for return or replacement of STM32F205ZCT6?

All STM32F205ZCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F205ZCT6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32F205ZCT6 part is unused and in its original packaging.

Return procedure for STM32F205ZCT6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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