NXP LPC11U14FBD48/20EL, ARM Cortex-M0, 32-bit, 50 MHz, 32 KB Flash, 6 KB RAM, USB 2.0, 40 I/O, 1.8 V to 3.6 V, -40 to 85 °C, 48-LQFP.
| Parameter | Value |
|---|---|
| Series | LPC11Uxx |
| Mounting | 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 | Tray |
| 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) | 40 |
| Core processor | ARM® Cortex®-M0 |
| Case | 48-LQFP |
| Data converters | A/D 8x10b SAR |
| Program memory size | 32KB (32K x 8) |
Temperature grade is -40 to 85 °C.
At 50 MHz the Cortex-M0 core can service USB interrupts and still poll I²C sensors. The 6 KB RAM is the constraint: a USB buffer plus protocol stack leaves limited space for variables.
The LPC11U14FBD48/20EL is listed as Active. It runs at 50 MHz.
It is a 32-bit ARM Cortex-M0 MCU running at 50 MHz, with 32 KB Flash, 6 KB RAM, USB 2.0 device, I²C, SPI, UART, 40 I/O, operating from 1.8 V to 3.6 V over -40 to 85 °C in a 48-LQFP package.
Yes, it integrates a full-speed USB 2.0 device controller, listed under its connectivity interfaces.
The /20EL suffix indicates a 50 MHz speed grade versus the original 48 MHz part. It is pin-compatible and functionally identical, so it can replace the older variant in the same socket after updating the firmware clock configuration.