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NXP USA Inc. LPC1311FHN33 — Microcontrollers & Processors (MCU / MPU / DSP)
NXP USA Inc.

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).

LPC1311FHN33 datasheet
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Specifications

LPC1311FHN33 Technical Specifications
ParameterValue
SeriesLPC13xx
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed72MHz
PackageBulk
RAM size4K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, POR, WDT
ConnectivityI²C, Microwire, SPI, SSI, UART/USART
Number of i (O)28
Core processorARM® Cortex®-M3
Case32-VQFN Exposed Pad
Data convertersA/D 8x10b
Program memory size8KB (8K x 8)

Product details

72 MHz Cortex-M3 with 8 KB Flash — what it means for the BOM

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.

Connectivity and peripherals

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.