NXP LPC11Uxx series 32-bit ARM Cortex-M0 MCU, LPC11U14FHI33/201551, 50 MHz core, 32 KB Flash, 6 KB RAM, USB 2.0, I2C/SPI/UART, 26 GPIO, 8-channel 10-bit ADC, 1.8-3.6 V supply, -40 to 85 °C, 32-HVQFN package.
| Parameter | Value |
|---|---|
| Series | LPC11Uxx |
| 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 | 50MHz |
| Package | Bulk |
| RAM size | 6K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | I²C, Microwire, SmartCard, SPI, SSP, UART/USART, USB |
| Number of i (O) | 26 |
| Core processor | ARM® Cortex®-M0 |
| Case | 32-VQFN Exposed Pad |
| Data converters | A/D 8x10b |
| Program memory size | 32KB (32K x 8) |
32 KB Flash and 6 KB RAM constrain firmware to compact stacks — think USB HID or CDC class, not a full TCP/IP stack with large buffers. The USB controller is device-only; no host or OTG. Serial interfaces include SSP (synchronous serial) and Microwire compatibility, which broadens peripheral options beyond standard SPI.
The core runs at 50 MHz. That is the maximum clock for the ARM Cortex-M0 on this device, sufficient for real-time control and USB data handling.
Within the LPC11Uxx family, parts with the same 32-HVQFN footprint and pinout (e.g., LPC11U12 or LPC11U13 variants) offer lower Flash/RAM densities. For a drop-in upgrade, check the LPC11U24 with 64 KB Flash and 12 KB RAM — same package, same pinout, same peripherals. Verify exact memory and USB configuration against your firmware requirements.