Memory budget — 32 KB Flash, 8 KB SRAM
32 KB of Flash is tight for firmware that includes a USB stack, a bootloader, and application code. The 8 KB SRAM covers stack, USB endpoint buffers, and a modest data buffer.
NXP LPC1343FHN33,518 ARM Cortex-M3 MCU, 72MHz, 32KB Flash, 8KB SRAM
MPNLPC1343FHN33,518
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NXP LPC13xx series ARM Cortex-M3 32-bit MCU, LPC1343FHN33,518, 72MHz, 32KB Flash, 8KB SRAM, USB 2.0, I2C/SPI/UART, 28 I/O, 32-HVQFN (7x7mm), -40°C to +85°C.
$4.3544Ref. price · indicative, final on quote
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 | Tape & Reel (TR) |
| RAM size | 8K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Connectivity | I²C, Microwire, SPI, SSI, SSP, UART/USART, USB |
| Number of i (O) | 28 |
| Core processor | ARM® Cortex®-M3 |
| Case | 32-VQFN Exposed Pad |
| Data converters | A/D 8x10b |
| Program memory size | 32KB (32K x 8) |
Product details
Frequently asked questions
What is the closest pin-compatible alternative to LPC1343FHN33,518?
Within the LPC13xx family, the LPC1345FHN33 (48 KB Flash) and LPC1346FHN33 (64 KB Flash) are pin-compatible upgrades that share the same 32-HVQFN footprint, core, and peripheral set. They offer more Flash without a board respin, making them the natural second-source or capacity-up option when firmware outgrows the 32 KB limit.