NXP LPC11Uxx series 32-bit ARM Cortex-M0 MCU, 50 MHz, 40 KB Flash, 8 KB RAM, 4 KB EEPROM, USB 2.0, 40 I/O, 48-LQFP, -40 to 85°C.
| 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 | 8K x 8 |
| Core size | 32-Bit Single-Core |
| EEPROM size | 4K x 8 |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | I²C, Microwire, SmartCard, SPI, SSP, UART/USART, USB |
| Number of i (O) | 40 |
| Core processor | ARM® Cortex®-M0 |
| Case | 48-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 40KB (40K x 8) |
The LPC11U34FBD48/311151: 40 KB Flash holds a USB stack (CDC or HID), a bootloader, and application code for a single-function device. 8 KB RAM is tight for large data buffers — plan for double-buffered USB endpoints and a small packet queue.
The LPC11Uxx family includes pin-compatible variants with larger Flash and RAM — for example, the LPC11U37FBD48/311151 offers 128 KB Flash and 12 KB RAM in the same 48-LQFP footprint. Check the NXP LPC11Uxx datasheet for the full memory-option matrix.
The core runs at 50 MHz, which is the maximum CPU clock for this ARM Cortex-M0 device.