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NXP Semiconductors LPC1111FHN33/202,5
- Part No.:
- LPC1111FHN33/202,5
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VQFN Exposed Pad
- Datasheet:
-
LPC1111FHN33/202,5.pdf
- Description:
- IC MCU 32BIT 8KB FLASH 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,791
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Product details
Overview
LPC1111FHN33/202 from NXP Semiconductors is an ARM Cortex-M0 32-bit microcontroller in a 33-terminal HVQFN package, featuring 8 kB flash, 4 kB SRAM, one UART with RS-485 support, one I²C-bus interface (Fast-mode Plus), one SPI, four timers, and a 10-bit ADC with 8 input channels-designed for low-power embedded control in lighting and alarm systems.
For engineers reviewing the LPC1111FHN33/202 datasheet, LPC1111FHN33/202 pinout, LPC1111FHN33/202 application, or LPC1111FHN33/202 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative parts for rapid design-in and supply assurance.
Technical Context
The LPC1111FHN33/202 implements the ARM Cortex-M0 core with Nested Vectored Interrupt Controller (NVIC) and operates at up to 50 MHz using internal RC (12 MHz ±1 %) or external crystal (1–25 MHz) clock sources. It integrates a programmable windowed watchdog timer and power management unit supporting Sleep, Deep-sleep, and Deep power-down modes.
Its peripheral set includes a 10-bit ADC with multiplexed inputs across 8 pins, GPIO with configurable pull-up/pull-down and open-drain mode, high-current output (20 mA) on one pin, and high-current sink (20 mA) on two I²C pins-targeting cost-sensitive, low-power industrial sensing and control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC architecture optimized for deterministic real-time control |
| Max Clock Frequency | 50 MHz - enables fast interrupt response and efficient execution of sensor fusion or protocol stack tasks |
| Flash Memory | 8 kB - sufficient for compact firmware including bootloader and basic communication stacks |
| SRAM | 4 kB - supports moderate variable allocation for RTOS task stacks and buffer handling |
| ADC Resolution | 10-bit - provides 1024-level analog measurement precision for temperature, voltage, or current sensing |
| I²C Speed | 1 Mbit/s Fast-mode Plus - allows high-speed communication with multiple slave devices without bus contention |
| GPIO Count | 28 pins - includes dedicated UART, I²C, SPI, and timer I/O with flexible configuration per pin |
| Operating Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, 3.3 V logic, and battery-backed systems |
Pinout & Package
HVQFN33 package: plastic thermal-enhanced very thin quad flat package, no leads, 33 terminals, body size 7 mm × 7 mm × 0.85 mm, exposed thermal pad for improved heat dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_0 | Reset input / General-purpose I/O | Active-low hardware reset; configurable as GPIO with interrupt capability |
| XTALIN / XTALOUT | Crytal oscillator input/output | Supports 1–25 MHz external crystal for precise timing; optional internal 12 MHz RC oscillator |
| SWDIO / PIO1_3 / AD4 / CT32B1_MAT2 | Debug I/O / ADC input / Timer match | Single-wire debug interface; shares pin with ADC channel 4 and 32-bit timer match output |
| PIO0_4 / SCL | I²C clock line | Open-drain output with internal pull-up; supports Fast-mode Plus (1 Mbit/s) |
| PIO0_5 / SDA | I²C data line | Open-drain bidirectional; complements SCL for multi-master bus operation |
| PIO1_6 / RXD / CT32B0_MAT0 | UART receive / Timer match | Asynchronous serial input; also serves as 32-bit timer match output for PWM generation |
| PIO1_7 / TXD / CT32B0_MAT1 | UART transmit / Timer match | RS-485-ready UART output; dual-use for timer-based pulse generation |
| PIO0_7 / CTS | UART clear-to-send | Hardware flow control input for robust serial communication in noisy environments |
| VDD (x2) | Power supply | Dual 1.8–3.6 V supply pins ensure stable core and I/O domain operation |
| VSS (x2) | GND | Dual ground connections reduce noise coupling and improve signal integrity |
| PIO1_4 / AD5 / CT32B1_MAT3 / WAKEUP | ADC input / Timer match / Wake-up source | Enables low-power wake-up from Deep-sleep via analog threshold or digital edge detection |
Key Features
| Feature | Design Value |
|---|---|
| Power profiles in boot ROM | One function call optimizes performance vs. power consumption across Sleep, Deep-sleep, and Deep power-down modes |
| Windowed watchdog timer | Prevents runaway code by requiring service within defined time windows-critical for safety-critical alarm systems |
| Configurable open-drain mode | Enables direct connection to I²C buses and wired-AND logic without external pull-ups |
| High-current I/O drivers | 20 mA sink on I²C pins eliminates need for external level shifters in mixed-voltage designs |
| Serial Wire Debug (SWD) | Two-pin debug interface reduces PCB footprint and simplifies in-circuit programming and trace debugging |
| Unique device serial number | Enables secure firmware binding and field device authentication in connected lighting systems |
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 system controller executing lighting algorithm, ADC sampling, and UART-based Zigbee/Bluetooth module interface. Use Value: 8 kB flash accommodates lighting profile engine and communication stack; 10-bit ADC enables precise lux-level feedback for adaptive dimming. | Use Scenario: Battery-powered door/window sensor hub aggregating contact, motion, and tamper signals. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor polling, wake-up events, and encrypted UART transmission to central gateway. Use Value: Windowed WDT ensures reliable operation during extended sleep cycles; Deep power-down mode extends battery life beyond 5 years. |
| Industrial Temperature Monitor | White Goods UI Subsystem |
Use Scenario: DIN-rail mounted temperature logger with RS-485 Modbus RTU connectivity. IC Role / Device Role / Timing Role: Sensor interface MCU acquiring thermistor/RTD readings and formatting Modbus frames for master polling. Use Value: RS-485 UART with fractional baud rate generator supports legacy industrial networks; 28 GPIO allow direct LED status indicators and relay control. | Use Scenario: Appliance front-panel controller handling button matrix, LCD backlight, buzzer, and EEPROM configuration storage. IC Role / Device Role / Timing Role: Dedicated UI processor decoupled from main appliance MCU to improve responsiveness and safety isolation. Use Value: 4 kB SRAM buffers touch event queues and display refresh data; open-drain GPIO drive piezo buzzer directly without external driver. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1111FHN33/102 | Same 8 kB flash, 4 kB SRAM, HVQFN33 package, but lacks power profiles and windowed WDT | Suitable for cost-sensitive designs where advanced power management is not required | Select when full LPC1100L feature set is unnecessary and BOM cost reduction is prioritized |
| LPC1112FHN33/202 | 16 kB flash, 4 kB SRAM, identical package and peripheral set, same power profiles and windowed WDT | Provides headroom for future firmware updates or added protocol support (e.g., DALI, KNX) | Choose when firmware growth margin or dual-stack implementation (e.g., BLE + Modbus) is anticipated |
Compared with LPC1111FHN33/202, the /102 variant omits power optimization features for lower cost, while the /202 variant doubles flash capacity without changing pinout or power behavior-enabling scalable firmware development across product tiers.
Availability
LPC1111FHN33/202 is available at Aetrix Electronics and suitable for smart lighting control, home security panels, industrial temperature monitoring, and white goods UI subsystems requiring stable component supply and long-term lifecycle support.
Supply support for LPC1111FHN33/202 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 delivering secure, energy-efficient, and intelligent solutions for automotive, industrial, IoT, and mobile applications.
The LPC111x series targets cost-constrained 8/16-bit replacement applications, emphasizing low power, simple toolchain integration, and minimal board space-ideal for battery-operated and space-limited embedded systems.
FAQ
What is the maximum operating frequency of the LPC1111FHN33/202?
The LPC1111FHN33/202 operates at a maximum CPU frequency of 50 MHz. This speed is achievable using either the internal 12 MHz ±1 % RC oscillator (with PLL multiplication) or an external crystal oscillator ranging from 1 MHz to 25 MHz. The PLL allows full-speed operation without requiring a high-frequency crystal, reducing BOM cost and layout complexity in the LPC1111FHN33/202 design.
Does the LPC1111FHN33/202 support RS-485 communication?
Yes, the LPC1111FHN33/202 includes a UART with built-in RS-485/EIA-485 support, including fractional baud rate generation and internal FIFO. This enables robust half-duplex differential communication over long distances in noisy industrial environments. The UART's RTS/CTS hardware flow control and dedicated DTR/RI/DSR signals further enhance reliability in multi-node RS-485 networks using the LPC1111FHN33/202.
How many ADC input channels does the LPC1111FHN33/202 provide?
The LPC1111FHN33/202 features a 10-bit ADC with input multiplexing across 8 pins (AD[7:0]), as confirmed for HVQFN33 packages in Table 2 of the datasheet. This allows simultaneous sampling of multiple analog sensors-such as temperature, voltage, or current-without external multiplexers. The ADC supports programmable conversion triggers and can wake the core from Deep-sleep mode, making it ideal for battery-powered sensing applications using the LPC1111FHN33/202.
What debug interface does the LPC1111FHN33/202 use?
The LPC1111FHN33/202 uses Serial Wire Debug (SWD), a two-pin (SWCLK and SWDIO) ARM-standard debug interface that replaces JTAG for reduced pin count and simplified PCB routing. SWD supports full run-control, memory access, and real-time trace capabilities. The SWDIO pin (PIO1_3) is shared with ADC channel 4 and a 32-bit timer match output, enabling flexible pin reuse in the LPC1111FHN33/202 design without sacrificing debug functionality.
Is the LPC1111FHN33/202 pin-compatible with other LPC111x HVQFN33 variants?
Yes, the LPC1111FHN33/202 is pin-compatible with all LPC111x family members in the HVQFN33 package-including LPC1112FHN33/202, LPC1113FHN33/202, and LPC1114FHN33/202-as confirmed by identical pin descriptions in Tables 9 and 11 of the datasheet. This allows drop-in upgrades (e.g., from 8 kB to 16 kB flash) without PCB redesign, provided power delivery and thermal constraints remain within specification for the LPC1111FHN33/202 and its replacements.
LPC1111FHN33/202,5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VQFN Exposed Pad
- Series:
- LPC1100L
- 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:
- 4K 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:
LPC1111FHN33/202,5 FAQ
1.How can I place an order for LPC1111FHN33/202,5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1111FHN33/202,5 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 LPC1111FHN33/202,5 reliable?
The price and inventory of LPC1111FHN33/202,5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1111FHN33/202,5 is usually 5 days.
3.What payment methods are accepted for LPC1111FHN33/202,5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1111FHN33/202,5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1111FHN33/202,5?
LPC1111FHN33/202,5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1111FHN33/202,5 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 LPC1111FHN33/202,5?
For technical support, including LPC1111FHN33/202,5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1111FHN33/202,5 requirements.
6.How does Aetrix verify that LPC1111FHN33/202,5 is sourced from the original manufacturer or authorized distributors?
All LPC1111FHN33/202,5 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 LPC1111FHN33/202,5 meets industry standards.
7.What is the process for return or replacement of LPC1111FHN33/202,5?
All LPC1111FHN33/202,5 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1111FHN33/202,5, 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 LPC1111FHN33/202,5 part is unused and in its original packaging.
Return procedure for LPC1111FHN33/202,5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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