MIMXRT685SFAWBR NXP RT-600 300 MHz Dual-Core Cortex-M33 WLCSP-114 MCU
NXP RT-600 series, 32-bit dual-core ARM Cortex-M33 at 300 MHz, 4.5 MB SRAM, 65 GPIO, 114-WLCSP (4.24×4.24 mm), USB2.0 OTG, 12×12-bit ADC, 1.71–3.6 V, -20°C to 85°C, Tape & Reel / Cut Tape, ROHS3 Active.
- 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 | Tape & Reel (TR); Cut Tape (CT) |
| 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) | 65 |
| Core processor | ARM® Cortex®-M33 |
| Case | 114-UFBGA, WLCSP |
| Data converters | A/D 12x12b |
Frequently asked questions
Does NXP publish a cross-reference or alternate source for the RT685 series?
No cross-reference or officially validated second source is listed in the current ledger. For long-lifecycle builds, an RFQ lets the sourcing team confirm traceability and whether a pin-compatible RT-600 variant is available.
What is the supply voltage range and what does it mean for cold-start design?
The device operates from 1.71 V to 3.6 V. At the 1.71 V minimum under cold-start conditions (-20°C), the brown-out reset release threshold must clear before the core exits reset — confirm your supply's cold-rise profile against the BOR trip point for unheated warehouse deployments.
Can the RT685 dual-core Cortex-M33 run the same SDK partition as the RT600 EVK?
The MIMXRT685SFAWBR is in the RT-600BYLINE series and carries the standard dual-core resource allocation model. The SDK partition is toolchain-dependent — confirm your MCUXpresso version supports dual-core allocation before locking firmware architecture.