NXP, RT-600 series, 32-bit dual-core ARM Cortex-M33 crossover MCU at 300MHz, 4.5M x 8 RAM, external program memory, 147 I/O, USB2.0 OTG, 1.71V to 3.6V supply, -20°C to 85°C operating ambient, 249-FOWLP (7x7mm) surface-mount 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.
- PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.
Specifications
| Parameter | Value |
|---|---|
| Series | RT-600 |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | External Program Memory |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -20°C~85°C(TA) |
| Speed | 300MHz |
| Package | Tray |
| RAM size | 4.5M x 8 |
| Core size | 32-Bit Dual-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | EBI/EMI, I²C, MMC/SD/SDIO, SPDIF, SPI, UART/USART, USB2.0 OTG |
| Number of i (O) | 147 |
| Core processor | ARM® Cortex®-M33 |
| Case | 249-WFBGA |
| Data converters | A/D 12x12b |
Frequently asked questions
Can I run this part on a 3.3V rail without an LDO?
Yes. The supply range of 1.71V to 3.6V accepts 3.3V directly, and the 147 GPIO banks are 3.3V native. The USB OTG PHY on VBUS is a separate 5V domain — that needs its own 3.3V LDO from the bus, not from the core 3.3V rail.
Does the external program memory requirement mean I must add SPI flash to my BOM?
Yes. The MIMXRT685SFFOB boots from FlexSPI — it has no internal flash. You need a matched SPI or Octal Flash device and the correct boot configuration set in the OTP fuses. There is no onboard flash option to populate to reduce the BOM; a different RT600 sub-variant would be required for that.
Is the -20°C to 85°C rating sufficient for a sealed cabinet with no active cooling?
That depends on the actual cabinet interior temperature under your worst-case ambient. At 85°C TA the part is at its upper ambient limit — if your cabinet runs hotter than that, or if the thermal resistance of your board assembly pushes junction temperature above the NXP derating curve, you need the extended-temperature RT685 variant rated for higher ambient.