The NXP LPC1311FHN33 is a 32-bit ARM Cortex-M3 MCU running at 72 MHz, with 8 KB of Flash program memory and 4 KB of SRAM. That core speed puts it in the sweet spot for control-loop tasks like motor commutation, sensor polling, and protocol bridging where a low-end 8-bit part would run out of headroom. The 8 KB Flash limits firmware to compact, single-purpose applications — think a dedicated I²C-to-UART gateway or a simple PWM controller — not a multi-stack IoT endpoint. The 4 KB SRAM is enough for a few hundred bytes of stack and moderate data buffers; anything needing large lookup tables or frame buffers will bump into the ceiling.
NXP LPC1311FHN33 ARM Cortex-M3 MCU, 72 MHz, 8 KB Flash
MPNLPC1311FHN33
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NXP LPC13xx series 32-bit ARM Cortex-M3 MCU, LPC1311FHN33, 72 MHz core, 8 KB Flash, 4 KB SRAM, 28 I/O, 8x10-bit ADC, I²C/SPI/UART, 2V–3.6V supply, -40°C to 85°C, 32-HVQFN (7x7 mm).
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | LPC13xx |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 72MHz |
| Package | Bulk |
| RAM size | 4K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | I²C, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 28 |
| Core processor | ARM® Cortex®-M3 |
| Case | 32-VQFN Exposed Pad |
| Data converters | A/D 8x10b |
| Program memory size | 8KB (8K x 8) |
Product details
Frequently asked questions
What is the difference between LPC1311 and LPC1313?
The LPC1313 doubles the Flash to 32 KB and the SRAM to 8 KB compared to the LPC1311's 8 KB Flash and 4 KB SRAM, while keeping the same 72 MHz Cortex-M3 core, package, and pinout. The LPC1313 is the part to pick if your firmware outgrows 8 KB.
What is LPC1311FHN33's speed rating?
The core runs at 72 MHz, which is the maximum clock for this Cortex-M3 implementation in the LPC13xx series.
Does LPC1311FHN33 have an ADC?
Yes, it integrates an 8-channel, 10-bit ADC, suitable for reading analog sensor inputs without an external converter.