STM32F446RCT7TR — STM32F4 Cortex-M4 MCU, 180MHz, 256KB Flash, 64-LQFP
STMicroelectronics STM32F4 series, 32-bit ARM Cortex-M4 single-core at 180MHz, 256KB Flash, 128KB RAM, 50 I/O, CANbus/USB OTG/SAI, 1.7–3.6V supply, -40°C to 105°C, 64-LQFP (10x10mm), Tape & Reel / Cut Tape.
- 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
- Date & lot codes on quoteStated per line before you commit; label photos on request.
- MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
- PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.
Specifications
| Parameter | Value |
|---|---|
| Series | STM32F4 |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.7V ~ 3.6V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 180MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 128K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 50 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 256KB (256K x 8) |
Frequently asked questions
Can I substitute the STM32F446RCT7TR with the STM32F446RET7TR without PCB layout changes?
Both parts share the same 64-LQFP 10x10 mm package and 50 I/O count — the pinout is functionally identical and no layout rework is required. However, firmware revalidation is necessary: the RET7 variant carries additional flash (512KB or 1MB depending on the specific sub-variant) which changes the memory map and linker script configuration. The A/D converter calibration constants for the 16x12b ADC do not need re-characterisation because the analog block is the same silicon — but the boot configuration and vector table placement must be verified in the build toolchain.
What does the 105°C ambient temperature rating mean for a panel-build run versus the standard 85°C variant?
The -40°C to 105°C ambient rating covers sealed enclosure deployments where internal temperatures climb above what the commercial grade tolerates. For a 40-unit panel-build run the 105°C variant carries a longer lead time than the 85°C grade because it is a lower-volume sub-variant. Tape & Reel pricing is generally more stable across volume runs than Cut Tape, but the exact MOQ and reel pricing for CT on this industrial temp grade requires an RFQ — the 105°C ambient spec is the reason to specify the TR or CT format with the distributor upfront.