STM32F439ZIT6 — STMicroelectronics ARM Cortex-M4 MCU, 180MHz, 2MB Flash, 144-LQF
STMicroelectronics STM32F4 series ARM Cortex-M4 MCU; 180MHz core with FPU and DSP; 2MB Flash, 256KB RAM; 24x12b ADC, 2x12b DAC; Ethernet, CAN, USB OTG, SPI/I²C/UART; 114 I/O; 1.8–3.6V supply; -40 to 85°C; 144-LQFP tray.
- 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.
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Specifications
| Parameter | Value |
|---|---|
| Series | STM32F4 |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 180MHz |
| Package | Tray |
| RAM size | 256K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG |
| Number of i (O) | 114 |
| Core processor | ARM® Cortex®-M4 |
| Case | 144-LQFP |
| Data converters | A/D 24x12b; D/A 2x12b |
| Program memory size | 2MB (2M x 8) |
Frequently asked questions
Does the STM32F439ZIT6 drop into an existing STM32F429ZI land pattern?
The two parts share the same 144-LQFP package and base product number, and the STM32F429ZI is the most commonly cited pin-compatible reference for footprint validation. Check the specific peripheral multiplexing and boot-pin strapping against the respective datasheets before assuming full compatibility.
What is the I/O count, and will 114 I/O cover a typical PLC discrete mapping without backplane expansion?
The STM32F439ZIT6 exposes 114 general-purpose I/O lines. For most 16- to 32-channel safety PLC or EtherNet/IP retrofit modules, 114 I/O provides sufficient discrete mapping headroom without requiring a backplane expansion — but the I/O assignment (which pins carry which functions) must be verified against the pinout before board layout is finalized.
What does the -40 to 85°C rating mean for a panel at 70°C ambient?
The 85°C rating is the ambient operating limit at the board level. During 180MHz operation the internal core junction temperature approaches 125°C — the temperature difference between 70°C ambient and the 85°C limit leaves a narrow margin that depends on the 144-LQFP thermal resistance in the actual enclosure. Verify θJA for the specific footprint and airflow conditions before committing this grade to a thermally constrained panel.