NXP Semiconductors LPC1112LVFHI33/103

Overview

LPC1112LVFHI33/103 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in HVQFN33 package, operating at up to 50 MHz with 16 kB flash, 4 kB SRAM, 8-channel 8-bit ADC, and 27 GPIO pins. It integrates UART, SPI/SSP, Fast-mode Plus I²C (1 Mbit/s), four counter/timers, and supports ultra-low-power Deep-sleep mode (≤1.6 µA) for battery-constrained portable electronics.

For engineers reviewing the LPC1112LVFHI33/103 datasheet, LPC1112LVFHI33/103 pinout, LPC1112LVFHI33/103 application, or LPC1112LVFHI33/103 equivalent, key selection criteria include its 1.65–1.95 V single-supply operation, 27-pin HVQFN33 footprint, 8-channel ADC capability, Fast-mode Plus I²C support, and wake-up-from-Deep-sleep via up to 13 GPIO pins.

Technical Context

The LPC1112LVFHI33/103 implements an ARM Cortex-M0 core with integrated NVIC and Serial Wire Debug, executing from on-chip flash with 256-byte page erase. Its clock system combines a 12 MHz ±2.5% internal RC oscillator, external crystal support (1–25 MHz), programmable watchdog oscillator (9.4 kHz–2.3 MHz), and PLL for CPU frequency scaling up to 50 MHz.

Digital peripherals include accelerated AHB-based GPIO with configurable pull-up/pull-down and open-drain mode on select pins, plus dedicated timer match/capture functions distributed across CT32B0, CT32B1, CT16B0, and CT16B1 - with CT16B1_CAP0, CT16B1_MAT0, CT16B1_MAT1, CT16B0_CAP1, and CT32B0_MAT3 explicitly available on HVQFN33 per datasheet Figure 4 and Table 3.

Key Specifications

Pinout & Package

HVQFN33 package: plastic thermal enhanced very thin quad flat package, no leads, 33 terminals, body size 5 × 5 × 0.85 mm. Pin 1 marked by index area; 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 LPC1114LVFHI33/303, the LPC1112LVFHI33/103 trades flash/RAM capacity for lower BOM cost in fixed-function roles; versus LPC11U12FHN24/203, it gains 7 additional GPIO and 2 ADC channels at the expense of USB - making it optimal for sensor-rich, non-USB embedded control.

Availability

LPC1112LVFHI33/103 is available at Aetrix Electronics and suitable for mobile accessories, portable medical electronics, camera modules, and tablet subsystems requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LPC1112LVFHI33/103 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 leader specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

The LPC111xLV family was designed for cost-sensitive, ultra-low-power 32-bit embedded control in space-constrained portable electronics - delivering Cortex-M0 performance within 1.65–1.95 V operation and HVQFN packaging.

FAQ

What is the maximum operating frequency of the LPC1112LVFHI33/103?

The LPC1112LVFHI33/103 operates at a maximum CPU frequency of 50 MHz. This is achieved using the on-chip PLL driven by either the internal 12 MHz RC oscillator or an external crystal (1–25 MHz). The 50 MHz clock feeds the ARM Cortex-M0 core, timers, and peripherals - enabling real-time response in demanding sensor or communication tasks without external clock components.

Does the LPC1112LVFHI33/103 support USB functionality?

No, the LPC1112LVFHI33/103 does not include a USB controller. It provides UART, SPI/SSP, and Fast-mode Plus I²C for serial communication. For USB-enabled designs, engineers should consider NXP's LPC11Uxx series (e.g., LPC11U12FHN24/203), which integrates USB 2.0 device capability but uses a different peripheral set and package variant.

How many ADC channels are available on the LPC1112LVFHI33/103?

The LPC1112LVFHI33/103 features an 8-bit successive approximation ADC with input multiplexing across 8 pins - specifically enabled on the HVQFN33 package. Pins AD0 through AD7 correspond to PIO0_11, PIO1_0, PIO1_1, PIO1_2, PIO1_3, PIO1_4, PIO1_10, and PIO1_11. This 8-channel capability supports simultaneous multi-sensor monitoring in compact portable devices.

What power modes does the LPC1112LVFHI33/103 support?

The LPC1112LVFHI33/103 supports Sleep and Deep-sleep power modes. In Deep-sleep mode, current consumption is ≤1.6 µA with a 5 µs wake-up time - achieved by gating clocks to non-essential blocks while retaining SRAM and register state. Wake-up sources include GPIO interrupts (up to 13 pins), timer match events, and UART activity, making it ideal for battery-powered intermittent-operation systems.

Is the LPC1112LVFHI33/103 pin-compatible with other LPC111xLV variants?

Yes, the LPC1112LVFHI33/103 shares identical pinout and package (HVQFN33) with LPC1114LVFHI33/303, enabling drop-in replacement where increased flash (32 kB) or SRAM (8 kB) is required. However, it is not pin-compatible with HVQFN24 variants (e.g., LPC1112LVFHN24/003) due to differing terminal count and signal mapping - requiring PCB redesign for migration.