Memory map and firmware fit
The LPC11U35FHI33/501551: 64 KB Flash is typical for a USB HID bootloader plus a moderate application. The 12 KB SRAM is the tighter constraint.
The 26 GPIOs are multiplexed with peripheral functions.
NXP LPC11U35FHI33/501551 ARM Cortex-M0 MCU, 50 MHz, 64 KB Flash
MPNLPC11U35FHI33/501551
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NXP LPC11Uxx series 32-bit ARM Cortex-M0 MCU, 50 MHz, 64 KB Flash, 12 KB RAM, USB 2.0, I²C/SPI/UART/USART, 26 GPIO, 8x10-bit ADC, -40 to 85 °C, 32-HVQFN (5x5 mm).
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| 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 | Bulk |
| RAM size | 12K 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) | 26 |
| Core processor | ARM® Cortex®-M0 |
| Case | 32-VFQFN Exposed Pad |
| Data converters | A/D 8x10b |
| Program memory size | 64KB (64K x 8) |
Product details
Frequently asked questions
What is the closest pin-compatible alternative in the LPC11Uxx family?
The LPC11U34 (48 KB Flash) and LPC11U36 (96 KB Flash) share the same 32-HVQFN footprint and peripheral set. The base LPC11xx family is also pin-compatible but lacks the USB controller.
What is the listed speed of LPC11U35FHI33/501551?
The core runs at 50 MHz, which is the maximum CPU clock for this ARM Cortex-M0 device.
What compliance documentation is available for LPC11U35FHI33/501551?
NXP provides RoHS and REACH compliance documentation for this part. The 32-HVQFN package is lead-free and compatible with standard reflow profiles.