NXP Semiconductors LPC1317FHN33,551

Overview

LPC1317FHN33,551 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller designed for embedded USB-enabled applications. It operates at up to 72 MHz, integrates 64 kB flash, 8 kB SRAM, a 12-bit 8-channel ADC (500 kSamples/s), two SSP interfaces, and an I²C-bus supporting Fast-mode Plus (1 Mbit/s). Its HVQFN33 package supports compact industrial control and medical device designs.

For engineers reviewing the LPC1317FHN33,551 datasheet, LPC1317FHN33,551 pinout, LPC1317FHN33,551 application, or LPC1317FHN33,551 equivalent, key selection criteria include USB device controller capability (no USB PLL), 28 GPIO pins in HVQFN33, 32-bit timer resources, and support for RS-485/ISO 7816 smart card interfaces via its USART.

Technical Context

The LPC1317FHN33,551 implements the ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated NVIC for deterministic interrupt handling. It uses separate instruction/data buses and includes a prefetch unit with speculative branching to sustain 72 MHz operation.

Its clock system combines a 1–25 MHz crystal oscillator, 12 MHz ±1% IRC, programmable PLL0 (for CPU), and a dedicated watchdog oscillator. Unlike LPC1347 variants, it lacks the USB PLL but retains full-speed USB 2.0 device controller functionality via ROM-based drivers - confirmed in Table 2 and Fig 2.

Key Specifications

Pinout & Package

HVQFN33 package: plastic thermal enhanced very thin quad flat package; no leads; 33 terminals; body 7 × 7 × 0.85 mm. Pin 1 index area marked; exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC1347FHN33, the LPC1317FHN33,551 trades USB PLL precision and EEPROM for lower cost and identical USB device functionality; versus LPC1316FHN33, it adds full-speed USB while retaining the same footprint and power profile - enabling seamless upgrade paths in USB-enabled product families.

Availability

LPC1317FHN33,551 is available at Aetrix Electronics and suitable for industrial control gateways, handheld medical scanners, USB audio peripherals, and consumer peripheral hubs requiring stable component supply across long production cycles.

Supply support for LPC1317FHN33,551 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC1300 series targets cost-effective, USB-integrated microcontrollers for embedded systems demanding low power, rich analog peripherals, and rapid time-to-market - especially in medical, industrial, and consumer USB peripherals.

FAQ

What is the maximum operating frequency of the LPC1317FHN33,551?

The LPC1317FHN33,551 operates at a maximum CPU frequency of 72 MHz, achieved using either the internal 12 MHz IRC oscillator (trimmed to ±1%) or an external crystal (1–25 MHz) with PLL0 multiplication. This frequency is sustained under full temperature range (−40 °C to +85 °C) and 2.0–3.6 V supply conditions, as verified in the NXP LPC1315_16_17_45_46_47 datasheet Rev. 3.

Does the LPC1317FHN33,551 include a USB PLL?

No, the LPC1317FHN33,551 does not include a dedicated USB PLL. While it features a full-speed USB 2.0 device controller with ROM-based drivers, only the LPC1345/46/47 variants in the family integrate the second PLL specifically for USB clock generation. The LPC1317FHN33,551 relies on the main PLL0 output for USB timing, which remains compliant with full-speed requirements per the datasheet Table 2 and Figure 2 pinout.

How many ADC channels does the LPC1317FHN33,551 support?

The LPC1317FHN33,551 supports eight 12-bit ADC input channels (AD0–AD7), with a maximum sampling rate of 500 kSamples/s. All channels are accessible in the HVQFN33 package, including AD0 (PIO0_11), AD1 (PIO0_12), AD2 (PIO0_13), AD3 (PIO0_14), AD4 (PIO0_15), AD5 (PIO0_16), AD6 (PIO0_22), and AD7 (PIO0_23), as confirmed in Table 3 of the official datasheet.

What debug interfaces are supported by the LPC1317FHN33,551?

The LPC1317FHN33,551 supports Serial Wire Debug (SWD) and JTAG interfaces. SWD uses SWCLK (PIO0_10) and SWDIO (PIO0_15) pins; JTAG requires TDI (PIO0_11), TDO (PIO0_13), TMS (PIO0_12), TRST (PIO0_14), and TCK (shared with SWCLK). Both are fully functional in the HVQFN33 package, with no pin limitations - confirmed in Figures 2 and 6 and Table 3 of the datasheet.

Is the LPC1317FHN33,551 pin-compatible with other LPC13xx HVQFN33 variants?

Yes, the LPC1317FHN33,551 is pin-compatible with all LPC13xx HVQFN33 variants (e.g., LPC1315FHN33, LPC1316FHN33, LPC1345FHN33), sharing identical pin count, layout, and mechanical dimensions (7 × 7 × 0.85 mm). Signal mapping is consistent across the family, though USB-related pins (e.g., USB_DP/DM) are no-connect on LPC131x devices - verified in Figures 2 and 3 and Table 1 of the datasheet.