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NXP Semiconductors LPC1112FHN33/101,5
- Part No.:
- LPC1112FHN33/101,5
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VQFN Exposed Pad
- Datasheet:
-
LPC1112FHN33/101,5.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,467
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Product details
Overview
LPC1112FHN33/101 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in HVQFN33 package, featuring 16 kB flash, 2 kB SRAM, one UART with RS-485 support, one I²C-bus interface (standard mode only), one SPI, four timers, and a 10-bit ADC with 8 input channels - deployed in lighting control and alarm systems requiring compact, low-power embedded processing.
For engineers reviewing the LPC1112FHN33/101 datasheet, LPC1112FHN33/101 pinout, LPC1112FHN33/101 application, or LPC1112FHN33/101 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative options for industrial and consumer embedded designs.
Technical Context
The LPC1112FHN33/101 implements an ARM Cortex-M0 core operating at up to 50 MHz with NVIC and Serial Wire Debug support. It lacks power profiles and windowed watchdog timer - distinguishing it from LPC1100L/XL variants - and uses a standard programmable watchdog timer instead.
Its peripheral set includes a single SPI controller (SSP-capable), one UART with fractional baud rate generation and internal FIFO, and a 10-bit ADC multiplexed across eight pins. The I²C interface supports full I²C specification but excludes Fast-mode Plus (1 Mbit/s) capability per datasheet Table 2 and footnote (2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC, up to 50 MHz operation |
| Flash Memory | 16 kB on-chip flash with ISP/IAP support |
| SRAM | 2 kB static RAM for data and stack storage |
| ADC | 10-bit successive approximation ADC with 8 selectable input channels |
| Timers | Four general-purpose timers: two 32-bit and two 16-bit, with match/capture capability |
| UART | One UART with RS-485/EIA-485 support, fractional baud rate generator, and 16-byte FIFO |
| I²C Interface | One I²C-bus interface compliant with standard I²C specification (not Fast-mode Plus) |
| GPIO | 28 configurable GPIO pins with pull-up/pull-down resistors and edge/level interrupt capability |
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 |
|---|---|---|
| VDD | Power supply | Two dedicated 1.8–3.6 V supply pins for core and I/O domains |
| VSS | Ground | Single ground terminal (terminal 33) for return path |
| RESET/PIO0_0 | Reset input / GPIO | Active-low reset with internal pull-up; also serves as general-purpose I/O |
| XTALIN / XTALOUT | Clock input/output | Supports external crystal (1–25 MHz) or ceramic resonator; internal 12 MHz RC oscillator available |
| SWDIO / PIO1_3 / AD4 / CT32B1_MAT2 | Debug / GPIO / ADC / Timer | Multi-function pin for SWD debug, analog input, and timer match output |
| PIO0_7 / CTS | UART clear-to-send | Hardware flow control input for UART; configurable as GPIO |
| PIO1_6 / RXD | UART receive | Asynchronous serial data input; supports RS-485 receiver mode |
| PIO1_7 / TXD | UART transmit | Asynchronous serial data output; supports RS-485 driver enable via software |
| PIO0_4 / SCL | I²C clock | Open-drain clock line for standard-mode I²C communication (≤400 kHz) |
| PIO0_5 / SDA | I²C data | Open-drain bidirectional data line for standard-mode I²C |
| PIO0_2 / SSEL0 / CT16B0_CAP0 | SPI slave select / Timer capture | Active-low chip select for SPI0; also captures timer events on falling/rising edges |
| PIO0_9 / MOSI0 / CT16B0_MAT1 | SPI master out / Timer match | Outputs data during SPI0 master transfers; toggles on timer match event |
| PIO0_8 / MISO0 / CT16B0_MAT0 | SPI master in / Timer match | Inputs data during SPI0 master transfers; toggles on timer match event |
| PIO1_4 / AD5 / CT32B1_MAT3 / WAKEUP | ADC input / Timer match / Wakeup | Analog input channel 5; generates wake-up signal from Deep-sleep mode |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M0 core | Energy-efficient 32-bit processor enabling code density and performance gains over 8/16-bit MCUs |
| Serial Wire Debug (SWD) | Two-pin debug interface reducing PCB footprint while supporting full run-control and memory access |
| Configurable GPIO | 28 pins with programmable pull-up/pull-down and interrupt sensitivity for flexible board-level interfacing |
| RS-485 UART | Integrated hardware support for half-duplex differential bus communication without external transceiver logic |
| 10-bit ADC with 8 channels | On-chip analog sensing capability across eight pins, eliminating need for external multiplexer in multi-sensor systems |
| Power supply range | 1.8 V to 3.6 V operation enables direct compatibility with Li-ion, coin-cell, and standard logic rails |
Applications
| Lighting Control | Alarm Systems |
|---|---|
Use Scenario: Digital dimming and color mixing in LED luminaires using PWM and ambient light feedback. IC Role / Device Role / Timing Role: Main controller executing lighting algorithms, managing I²C-connected sensors, and driving PWM outputs via timer match registers. Use Value: 28 GPIO and 8 ADC channels allow direct connection of multiple LEDs, buttons, and environmental sensors without external expanders. | Use Scenario: Intrusion detection panel with keypad interface, siren control, and wired sensor inputs. IC Role / Device Role / Timing Role: Central MCU handling keypad scanning, zone monitoring, and RS-485 communication to remote sensors and panels. Use Value: Integrated RS-485 UART eliminates transceiver ICs; 16 kB flash accommodates secure firmware and event logging. |
| eMetering | White Goods |
Use Scenario: Sub-metering unit for energy consumption tracking in commercial HVAC or power distribution units. IC Role / Device Role / Timing Role: Data acquisition node collecting voltage/current samples via ADC and transmitting via UART to gateway. Use Value: 10-bit ADC resolution and 50 MHz CPU enable accurate sampling at >1 kHz rates with minimal firmware overhead. | Use Scenario: User interface and motor control coordination in washing machines or dishwashers. IC Role / Device Role / Timing Role: Front-panel controller managing display, buttons, buzzer, and relay drivers via GPIO and timer-based PWM. Use Value: 2 kB SRAM suffices for UI state machine and real-time motor timing; HVQFN33 footprint saves space on crowded control boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1112FHN33/102 | Same 16 kB flash / 2 kB SRAM, but adds power profiles and standard watchdog (no windowed WDT) | Enables dynamic power optimization in battery-powered devices via ROM-based API calls | Select when low-power operation across Sleep/Deep-sleep modes is required; same pinout and code compatibility |
| LPC1112FHN33/201 | Same 16 kB flash but doubles SRAM to 4 kB; no power profiles or windowed WDT | Supports larger protocol stacks (e.g., Modbus RTU) or real-time buffering without external RAM | Select when application requires >2 kB RAM for buffers or complex state machines; identical package and peripherals |
Compared with LPC1112FHN33/101, the /102 variant adds runtime power management APIs without changing footprint or clock/peripheral configuration, while the /201 variant trades SRAM capacity for identical power behavior - both retain full software compatibility and require no PCB changes.
Availability
LPC1112FHN33/101 is available at Aetrix Electronics and suitable for lighting control, alarm systems, and eMetering requiring stable component supply, long-term manufacturability, and consistent parametric performance across production batches.
Supply support for LPC1112FHN33/101 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, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC111x series was designed for cost-sensitive, low-power embedded applications where 32-bit performance, small footprint, and integrated analog/digital peripherals replace legacy 8/16-bit microcontrollers.
FAQ
What is the maximum operating frequency of the LPC1112FHN33/101?
The LPC1112FHN33/101 operates at a maximum CPU frequency of 50 MHz, achievable using either the internal 12 MHz RC oscillator (with PLL multiplication) or an external crystal up to 25 MHz. This frequency is fully supported across its specified temperature range of −40 °C to +85 °C.
Does the LPC1112FHN33/101 support Fast-mode Plus I²C?
No, the LPC1112FHN33/101 does not support Fast-mode Plus (1 Mbit/s). Per datasheet Table 2 and footnote (2), Fast-mode Plus is excluded from this variant - only standard I²C (≤400 kHz) is implemented on the I²C interface.
How much SRAM and flash memory does the LPC1112FHN33/101 include?
The LPC1112FHN33/101 integrates 16 kB of on-chip flash memory for program storage and 2 kB of SRAM for data and stack operations. Both memories are accessible via the AHB-Lite bus and support in-system programming (ISP) and in-application programming (IAP).
What package type is used for the LPC1112FHN33/101?
The LPC1112FHN33/101 uses the HVQFN33 package: a leadless, thermally enhanced quad flat package with 33 terminals, 7 mm × 7 mm body size, and 0.85 mm height. Pin 33 is designated as VSS (ground).
Does the LPC1112FHN33/101 include a windowed watchdog timer?
No, the LPC1112FHN33/101 does not include a windowed watchdog timer. It features only a standard programmable watchdog timer (WDT), as confirmed by its LPC1100 series designation in Table 2 - windowed WDT is exclusive to LPC1100L and LPC1100XL variants.
LPC1112FHN33/101,5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VQFN Exposed Pad
- Series:
- LPC1100
- 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:
- 16KB (16K 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
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1112FHN33/101,5 FAQ
1.How can I place an order for LPC1112FHN33/101,5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1112FHN33/101,5 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 LPC1112FHN33/101,5 reliable?
The price and inventory of LPC1112FHN33/101,5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1112FHN33/101,5 is usually 5 days.
3.What payment methods are accepted for LPC1112FHN33/101,5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1112FHN33/101,5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1112FHN33/101,5?
LPC1112FHN33/101,5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1112FHN33/101,5 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 LPC1112FHN33/101,5?
For technical support, including LPC1112FHN33/101,5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1112FHN33/101,5 requirements.
6.How does Aetrix verify that LPC1112FHN33/101,5 is sourced from the original manufacturer or authorized distributors?
All LPC1112FHN33/101,5 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 LPC1112FHN33/101,5 meets industry standards.
7.What is the process for return or replacement of LPC1112FHN33/101,5?
All LPC1112FHN33/101,5 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1112FHN33/101,5, 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 LPC1112FHN33/101,5 part is unused and in its original packaging.
Return procedure for LPC1112FHN33/101,5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1112FHN33/101,5 Tags
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