STM32F401RCT6 Alternatives and Equivalents
STM32F4 (ARM Cortex-M4F) · STMicroelectronics · verified against manufacturer datasheet parameters
STM32F401RCT6 — a STM32F4 (ARM Cortex-M4F) part from STMicroelectronics — is one of the most-searched part numbers in its category. This page compares its verified pin-compatible variants and closest family alternates, using manufacturer datasheet parameters, and shows what is actually available from stock.
The table below distinguishes true drop-in replacements (same package and pinout) from family alternates that need design review. Specs marked "—" vary by suffix or were not published in the source data — confirm on the datasheet before committing.
This cross-reference is part of our guide to BOM sourcing — These active-production cross-references are part of our BOM sourcing and risk-management playbook.
View STM32F401RCT6 stock & pricing
Is the STM32F401RCT6 discontinued?
STM32F401RCT6 belongs to ST's high-performance F4 line — active production, but repeatedly allocation-constrained since 2020. E and G flash variants share silicon; availability per ordering code varies week to week on the spot market.
Pin-to-pin compatible alternatives
"Drop-in" means same package and pinout; other rows are family alternates that need design review.
| Part Number | Compatibility | Package | Core Processor | Core Size | Speed | Program Memory Size | RAM Size | Number of I/O | Connectivity | Data Converters | Voltage - Supply (Vcc/Vdd) | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STM32F401RCT6 (target) | — | LQFP | ARM® Cortex®-M4 | 32-Bit | 84MHz | 256KB (256K x 8) | 64K x 8 | 50 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 16x12b | 1.7V ~ 3.6V | -40°C ~ 85°C (TA) | 64-LQFP |
| STM32F401CBU3 | Family alternate — review design | 48-UFQFN Exposed Pad | ARM® Cortex®-M4 | 32-Bit | 84MHz | 128KB (128K x 8) | 64K x 8 | 36 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 10x12b | 1.7V ~ 3.6V | -40°C ~ 125°C (TA) | 48-UFQFN Exposed Pad |
| STM32F401CBU6 | Family alternate — review design | 48-UFQFN Exposed Pad | ARM® Cortex®-M4 | 32-Bit | 84MHz | 128KB (128K x 8) | 64K x 8 | 36 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 10x12b | 1.7V ~ 3.6V | -40°C ~ 85°C (TA) | 48-UFQFN Exposed Pad |
| STM32F401CBU6TR | Family alternate — review design | 48-UFQFN Exposed Pad | ARM® Cortex®-M4 | 32-Bit | 84MHz | 128KB (128K x 8) | 64K x 8 | 36 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 10x12b | 1.7V ~ 3.6V | -40°C ~ 85°C (TA) | 48-UFQFN Exposed Pad |
| STM32F401CBY6TT | Family alternate — review design | 49-UFBGA, WLCSP | ARM® Cortex®-M4 | 32-Bit | 84MHz | 128KB (128K x 8) | 64K x 8 | 36 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 10x12b | 1.7V ~ 3.6V | -40°C ~ 85°C (TA) | 49-UFBGA, WLCSP |
| STM32F401CCU6 | Family alternate — review design | 48-UFQFN Exposed Pad | ARM® Cortex®-M4 | 32-Bit | 84MHz | 256KB (256K x 8) | 64K x 8 | 36 | I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG | A/D 10x12b | 1.7V ~ 3.6V | -40°C ~ 85°C (TA) | 48-UFQFN Exposed Pad |
STM32F401RCT6 vs STM32F401CBU3: what actually differs
The two most-compared codes differ on: Program Memory Size: STM32F401RCT6 = 256KB (256K x 8), STM32F401CBU3 = 128KB (128K x 8); Number of I/O: STM32F401RCT6 = 50, STM32F401CBU3 = 36; Data Converters: STM32F401RCT6 = A/D 16x12b, STM32F401CBU3 = A/D 10x12b.
Everything else in the compared parameter set matches. If your design has margin on the differing parameters, STM32F401CBU3 is a practical substitute; if not, hold out for the exact code — we stock both.
Migration checklist: re-validate before you swap
- Flash size (E=512 KB, G=1 MB) — verify your image fits before downgrading
- Confirm FPU and peripheral set (DCMI, Ethernet, FSMC) exist on the alternate
- Flash wait-state and ART accelerator settings may need re-tuning per variant
- Package must match exactly — LQFP100 and BGA variants are not interchangeable
- Check VDD range and power-up sequencing requirements of the alternate
Where to source STM32F401RCT6 and its alternates
We stock STM32F401RCT6 and its family variants in Hong Kong with date codes stated on every quote. Each lot passes marking verification; X-ray and electrical testing through accredited partner labs are available on request, with the report delivered before final payment.
Pricing follows the live spot market, so quotes carry a stated validity window — typically 24 to 48 hours on volatile lines. Send your quantity and required date code and the desk replies within 2 working hours.
STM32F401RCT6 can also ship consolidated with the rest of your BOM — one shipment, one invoice, one inspection standard. For recurring demand we reserve stock and schedule multi-lot releases, which smooths both price exposure and availability risk across your build calendar.
Guides: obsolete component sourcing · counterfeit detection methods
FAQ
Is STM32F401RCT6 discontinued?
No, the STM32F4 family is active. Allocation cycles make specific codes intermittently scarce.
What is the difference between E and G variants?
Flash size: E = 512 KB, G = 1 MB. Same package means pin-compatible; an E-variant design fits a G-variant chip without changes.
Are F405 and F407 interchangeable?
Same silicon family — the F407 adds Ethernet MAC and camera interface (DCMI). If you do not use them, they are drop-in compatible in the same package.
Do F4 variants share the same toolchain?
Yes — one CMSIS/HAL family, one debugger setup. Header defines differ per exact model.
How do you verify these MCUs?
Marking verification per lot, optional X-ray and functional test through partner labs, report before payment.
What quantities are available?
From single pieces to production reels; quantity and date code are stated on every quote.
Can I see photos or test reports before ordering?
Yes — label and top-marking photos of the actual lot are standard, and X-ray or lab reports can be arranged before payment on first orders. Tell the desk what your incoming inspection requires.
Do you support scheduled production deliveries?
Yes. For recurring demand we reserve stock of STM32F401RCT6 or its alternates and release shipments against your build schedule — one agreement instead of repeated spot buys.
Start an RFQ — our Hong Kong desk replies within 2 working hours.