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NXP Semiconductors LPC1111FHN33/103K
- Part No.:
- LPC1111FHN33/103K
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VQFN Exposed Pad
- Datasheet:
-
LPC1111FHN33/103K.pdf
- Description:
- IC MCU 32BIT 8KB FLASH 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,816
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Product details
Overview
LPC1111FHN33/103K from NXP Semiconductors is an ARM Cortex-M0 32-bit microcontroller in HVQFN33 package, featuring 8 kB flash, 2 kB SRAM, 28 GPIO pins, one UART with RS-485 support, one I²C-bus interface (Fast-mode Plus), two SPI controllers, four timers, and a 10-bit ADC-designed for low-power embedded control in lighting and alarm systems.
For engineers reviewing the LPC1111FHN33/103K datasheet, LPC1111FHN33/103K pinout, LPC1111FHN33/103K application, or LPC1111FHN33/103K equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options aligned to the LPC1100XL series specification.
Technical Context
The LPC1111FHN33/103K implements the ARM Cortex-M0 core with NVIC and system tick timer, operating at up to 50 MHz using internal 12 MHz RC oscillator (±1 %) or external crystal (1–25 MHz). It integrates a programmable windowed watchdog timer and power management unit supporting Sleep, Deep-sleep, and Deep power-down modes.
Peripherals include a 10-bit ADC with 8-channel input multiplexing, UART with fractional baud rate generation and RS-485 support, I²C-bus interface compliant with Fast-mode Plus (1 Mbit/s), and two SPI controllers with FIFO and multi-protocol capability-only the second SPI is enabled in LPC1100XL variants like this part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC, up to 50 MHz operation |
| Flash Memory | 8 kB on-chip flash with ISP/IAP support and page erase |
| SRAM | 2 kB general-purpose static RAM |
| GPIO Pins | 28 configurable I/O pins with pull-up/pull-down and open-drain mode |
| ADC | 10-bit successive approximation ADC with 8 input channels |
| Serial Interfaces | 1 UART (RS-485 capable), 1 I²C (Fast-mode Plus, 1 Mbit/s), 2 SPI |
| Timers | Four general-purpose timers: two 32-bit and two 16-bit with capture/match |
| Operating Voltage | 1.8 V to 3.6 V single-supply operation |
Pinout & Package
HVQFN33 package: plastic thermal enhanced very thin quad flat package, no leads, 33 terminals, body size 7 × 7 × 0.85 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VSS) | Ground | Primary digital ground reference for all I/O and core logic |
| 2–8, 10–16, 18–24, 26–32 | GPIO / Peripheral Function | Multi-function pins supporting UART, I²C, SPI, ADC, timers, and wake-up interrupts |
| 9 (RESET/PIO0_0) | Reset Input / GPIO | Active-low reset with configurable GPIO fallback after boot |
| 17 (XTALIN) | Clock Input | Connects to external crystal or clock source (1–25 MHz) |
| 25 (XTALOUT) | Clock Output | Drives external crystal; not available on LPC1112FHN24 |
| 33 (VDD) | Power Supply | Primary 1.8–3.6 V supply for core and I/O domains |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer | Enables safety-critical timeout monitoring with configurable window boundaries |
| Power Profiles in Boot ROM | Optimizes performance vs. power via single API call-exclusive to LPC1100XL series |
| Fast-mode Plus I²C | Supports 1 Mbit/s data rate with multiple address recognition and monitor mode |
| RS-485 UART | Integrated driver enable control and fractional baud rate generator for industrial bus compatibility |
| High-Current GPIO | One pin supports 20 mA high-current output; two I²C pins support 20 mA sink in Fast-mode Plus |
| Wake-up from Deep-sleep | Up to 13 functional pins can trigger processor wake-up without external circuitry |
Applications
| Smart Lighting Control | Home Security Panel |
|---|---|
Use Scenario: Dimmable LED driver with ambient light sensing and wireless command relay. IC Role / Device Role / Timing Role: Main controller executing lighting algorithms, managing PWM outputs, and handling I²C sensor reads and UART-based Zigbee/Bluetooth module communication. Use Value: 28 GPIO and dual SPI enable concurrent sensor interfacing and radio coexistence; 8 kB flash accommodates firmware + OTA update buffer. | Use Scenario: Battery-backed intrusion detection hub with door/window sensors, siren control, and keypad interface. IC Role / Device Role / Timing Role: Central security processor managing interrupt-driven sensor inputs, driving buzzer/siren outputs, and maintaining real-time clock via WDT and sleep modes. Use Value: Windowed WDT ensures fail-safe reset during firmware hangs; Deep power-down mode extends battery life beyond 5 years in standby. |
| Industrial Metering Interface | White Goods Appliance Controller |
Use Scenario: Pulse-counting electricity meter front-end with RS-485 communication to utility concentrator. IC Role / Device Role / Timing Role: Dedicated metering controller capturing kWh pulses via GPIO interrupts and transmitting data over RS-485 UART with hardware flow control. Use Value: UART with RTS/CTS and RS-485 support eliminates external transceiver; 10-bit ADC monitors supply voltage for tamper detection. | Use Scenario: Washing machine mainboard managing motor control, temperature sensing, display, and user input. IC Role / Device Role / Timing Role: Primary MCU coordinating motor drive timing, ADC-based thermistor reads, and button/keypad scanning via GPIO matrix. Use Value: Four independent timers precisely manage motor commutation intervals and debounce timing; 2 kB SRAM suffices for real-time state machine execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1111FHN33/203 | Same package and pinout; 4 kB SRAM instead of 2 kB; same 8 kB flash and LPC1100XL feature set | Preferred where larger data buffers or RTOS stack space required (e.g., BLE protocol stack integration) | Select when additional SRAM is needed without changing PCB layout or firmware architecture |
| LPC1112FHN33/103 | Same HVQFN33 package and LPC1100XL series; 16 kB flash (vs. 8 kB); identical peripherals and power features | Suitable for applications requiring firmware expansion headroom (e.g., field-upgradable diagnostics or dual-bank OTA) | Choose when future firmware growth is anticipated but pin compatibility and footprint must be preserved |
Compared with LPC1111FHN33/103K, the /203 variant adds 2 kB SRAM for richer data handling while the /103 variant doubles flash for scalable firmware-both retain identical timing, I/O, and safety features critical for lighting and alarm designs.
Availability
LPC1111FHN33/103K is available at Aetrix Electronics and suitable for smart lighting control, home security panels, and industrial metering interfaces requiring stable component supply across extended temperature ranges (−40 °C to +85 °C).
Supply support for LPC1111FHN33/103K 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 headquartered in Eindhoven, Netherlands, delivering secure, energy-efficient, and intelligent solutions for automotive, industrial, IoT, and communication markets.
The LPC111x family targets cost-sensitive 8/16-bit replacement applications, emphasizing low power, simple toolchain adoption, and minimal code footprint-optimized for lighting, alarm, and white goods control.
FAQ
What is the maximum operating frequency of the LPC1111FHN33/103K?
The LPC1111FHN33/103K operates at CPU frequencies of up to 50 MHz. This is achieved using either the internal 12 MHz RC oscillator (trimmed to ±1 % accuracy) or an external crystal oscillator ranging from 1 MHz to 25 MHz, optionally boosted by the integrated PLL. The device maintains full peripheral functionality at maximum clock speed.
Does the LPC1111FHN33/103K support in-system programming (ISP)?
Yes, the LPC1111FHN33/103K supports In-System Programming (ISP) and In-Application Programming (IAP) via its on-chip bootloader software. This enables firmware updates through UART without requiring external debug hardware, simplifying field maintenance and reducing production test complexity for the LPC1111FHN33/103K.
What ADC resolution and channel count does the LPC1111FHN33/103K provide?
The LPC1111FHN33/103K integrates a 10-bit successive approximation ADC with input multiplexing across 8 pins. This matches the HVQFN33 package capability and supports simultaneous sampling of multiple analog sensors-such as thermistors or light-dependent resistors-in lighting and appliance applications using the LPC1111FHN33/103K.
Is the LPC1111FHN33/103K compatible with the LPC1100XL series power profiles?
Yes, the LPC1111FHN33/103K belongs to the LPC1100XL series and includes power profiles stored in boot ROM. These profiles allow developers to optimize performance versus power consumption with a single function call-enabling rapid configuration of Sleep, Deep-sleep, and Deep power-down modes without custom register-level coding for the LPC1111FHN33/103K.
What is the temperature grade of the LPC1111FHN33/103K?
The LPC1111FHN33/103K is rated for industrial temperature operation from −40 °C to +85 °C ('F' grade per NXP ordering nomenclature). This makes it suitable for deployment in lighting fixtures, security enclosures, and metering equipment exposed to uncontrolled ambient conditions-ensuring reliable operation of the LPC1111FHN33/103K across its full specified range.
LPC1111FHN33/103K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VQFN Exposed Pad
- Series:
- LPC1100XL
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1111FHN33/103K FAQ
1.How can I place an order for LPC1111FHN33/103K through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1111FHN33/103K on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPC1111FHN33/103K reliable?
The price and inventory of LPC1111FHN33/103K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1111FHN33/103K is usually 5 days.
3.What payment methods are accepted for LPC1111FHN33/103K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1111FHN33/103K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1111FHN33/103K?
LPC1111FHN33/103K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1111FHN33/103K order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPC1111FHN33/103K?
For technical support, including LPC1111FHN33/103K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1111FHN33/103K requirements.
6.How does Aetrix verify that LPC1111FHN33/103K is sourced from the original manufacturer or authorized distributors?
All LPC1111FHN33/103K products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPC1111FHN33/103K meets industry standards.
7.What is the process for return or replacement of LPC1111FHN33/103K?
All LPC1111FHN33/103K units undergo pre-shipment inspection (PSI). If there is an issue with LPC1111FHN33/103K, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPC1111FHN33/103K part is unused and in its original packaging.
Return procedure for LPC1111FHN33/103K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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