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NXP Semiconductors LPC1112JHN33/103E
- Part No.:
- LPC1112JHN33/103E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VQFN Exposed Pad
- Datasheet:
-
LPC1112JHN33/103E.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,701
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Product details
Overview
LPC1112JHN33/103E from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in HVQFN33 package, operating up to 50 MHz with 16 kB flash, 2 kB SRAM, 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 LPC1112JHN33/103E datasheet, LPC1112JHN33/103E pinout, LPC1112JHN33/103E application, or LPC1112JHN33/103E equivalent, this page delivers verified specifications, validated pin functions, temperature-rated operation (−40 °C to +105 °C), power profile support, and direct alternative part comparisons for rapid design-in.
Technical Context
The LPC1112JHN33/103E belongs to the LPC1100XL series, featuring a windowed watchdog timer (WWDT), configurable open-drain GPIO mode, and power profiles stored in boot ROM for runtime optimization. It supports fractional baud rate generation in UART and Fast-mode Plus I²C at 1 Mbit/s.
Its clock system includes a 12 MHz internal RC oscillator trimmed to ±1 %, crystal oscillator (1–25 MHz), programmable watchdog oscillator (9.4 kHz–2.3 MHz), and PLL for CPU frequency scaling-enabling flexible timing without external high-frequency crystals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC architecture with NVIC and SysTick timer |
| Max Clock Frequency | 50 MHz - enables real-time response in motor control and sensor polling loops |
| Flash Memory | 16 kB - sufficient for firmware with bootloader, communication stack, and application logic |
| SRAM | 2 kB - supports moderate buffer handling for UART FIFO and ADC data acquisition |
| ADC Resolution | 10-bit - provides 1024-level analog input quantization across 8 channels |
| I²C Speed | 1 Mbit/s Fast-mode Plus - allows high-speed sensor interfacing with reduced bus capacitance limits |
| Operating Temp | −40 °C to +105 °C (J-grade) - qualified for industrial and automotive under-hood environments |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion and regulated 3.3 V rails |
Pinout & Package
HVQFN33 package: plastic thermal-enhanced very thin quad flat no-lead package, 7 mm × 7 mm × 0.85 mm body, 33 terminals, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_0 | Reset input / General-purpose I/O | Active-low reset with internal pull-up; configurable as GPIO with interrupt capability |
| XTALIN / XTALOUT | Crytal oscillator inputs | Supports 1–25 MHz crystal; optional external clock input on XTALIN |
| SWDIO / PIO1_3 / AD4 / CT32B1_MAT2 | Debug I/O / ADC input / Timer match | Shared pin enables SWD debugging, analog sensing, and timer event triggering |
| PIO0_4 / SCL | I²C serial clock | Open-drain output with internal pull-up; supports Fast-mode Plus (1 Mbit/s) |
| PIO0_5 / SDA | I²C serial data | Open-drain bidirectional line; compatible with standard and Fast-mode Plus I²C slaves |
| PIO1_6 / RXD / CT32B0_MAT0 | UART receive / Timer match | Asynchronous serial input with hardware FIFO; also serves as timer capture/match signal |
| PIO1_7 / TXD / CT32B0_MAT1 | UART transmit / Timer match | Full-duplex UART output with RS-485 direction control support via RTS/CTS |
| VDD (pins 11, 24) | Power supply | Dual VDD pins improve power integrity and reduce IR drop in high-current switching |
| VSS (pin 33) | Ground | Exposed thermal pad connected to VSS - critical for thermal dissipation in continuous operation |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer (WWDT) | Prevents runaway code execution with time-windowed refresh requirement-critical for safety-critical alarm systems |
| Power Profiles in Boot ROM | Runtime-selectable low-power modes (Sleep, Deep-sleep, Deep power-down) optimized via single API call |
| Configurable Open-Drain GPIO | Enables I²C, SMBus, and wired-AND logic without external pull-ups on selected pins |
| High-Current Sink on I²C Pins | 20 mA sink capability on SCL/SDA - supports robust bus driving under heavy capacitive loads |
| 10-Bit ADC with 8 Inputs | Simultaneous sampling across up to 8 channels with programmable trigger sources (timer, software, edge) |
| Serial Wire Debug (SWD) | 2-pin debug interface with full halt, step, and memory access-minimizes PCB footprint vs JTAG |
Applications
| Lighting Control | Alarm Systems |
|---|---|
Use Scenario: Digital dimming and color mixing in LED driver modules using PWM and ambient light feedback. IC Role / Device Role / Timing Role: Main controller executing closed-loop brightness regulation, I²C sensor readout, and UART-based commissioning. Use Value: 16 kB flash accommodates lighting protocol stacks (e.g., DALI, DMX over UART); 10-bit ADC enables precise lux measurement. | Use Scenario: Intrusion detection panel with door/window sensors, siren control, and wireless reporting via UART-to-LoRa bridge. IC Role / Device Role / Timing Role: Central security processor managing sensor polling, tamper detection, and RS-485 communication to keypad/display units. Use Value: WWDT ensures fail-safe reset during fault conditions; −40 °C to +105 °C rating supports outdoor enclosure deployment. |
| eMetering | White Goods |
Use Scenario: Sub-metering node in smart energy systems measuring current/voltage via shunt and isolator interfaces. IC Role / Device Role / Timing Role: Data acquisition MCU performing ADC sampling, CRC calculation, and UART/RS-485 data transmission to concentrator. Use Value: Two SPI interfaces allow simultaneous connection to isolation ADC and secure element; 2 kB SRAM buffers burst reads before transmission. | Use Scenario: Motor speed control and user interface management in washing machine main control board. IC Role / Device Role / Timing Role: Real-time motor commutation timing via PWM outputs and front-panel button/LED handling. Use Value: Four independent timers enable precise PWM generation and debounce timing; open-drain GPIO drives indicator LEDs directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1112FHN33/103 | Same 16 kB flash, 2 kB SRAM, HVQFN33 package, but rated for −40 °C to +85 °C (F-grade) | Not suitable for extended-temperature industrial enclosures or automotive under-hood use | Select when ambient operating temperature stays below +85 °C and cost sensitivity outweighs extended temp qualification |
| LPC1113JHN33/203 | 24 kB flash, 4 kB SRAM, same J-grade temp range and peripheral set; adds second SPI | Supports more complex firmware with dual communication stacks (e.g., BLE + RS-485) | Choose when firmware growth exceeds 16 kB or dual SPI is required for sensor hub + radio coexistence |
Compared with LPC1112FHN33/103, the LPC1112JHN33/103E offers guaranteed operation up to +105 °C-critical for sealed industrial housings-while LPC1113JHN33/203 extends memory headroom and peripheral concurrency without changing footprint or debug interface.
Availability
LPC1112JHN33/103E is available at Aetrix Electronics and suitable for lighting control, alarm systems, and eMetering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LPC1112JHN33/103E 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 applications.
The LPC1100XL series-including LPC1112JHN33/103E-is designed for cost-sensitive, low-power embedded control where extended temperature operation, integrated peripherals, and debug simplicity are essential.
FAQ
What is the maximum operating frequency of the LPC1112JHN33/103E?
The LPC1112JHN33/103E 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 enables deterministic real-time execution for time-critical tasks such as PWM generation and UART frame handling in the LPC1112JHN33/103E.
Does the LPC1112JHN33/103E support hardware debugging?
Yes, the LPC1112JHN33/103E supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins. This 2-pin interface provides full debug capabilities including halting, stepping, register inspection, and memory read/write-without requiring JTAG's four-signal footprint. SWD is fully implemented in the ARM Cortex-M0 core and supported by standard tools like Keil MDK and SEGGER J-Link for the LPC1112JHN33/103E.
How many ADC channels does the LPC1112JHN33/103E support?
The LPC1112JHN33/103E integrates a 10-bit successive approximation ADC with multiplexing across up to 8 input channels (AD0–AD7), all accessible on the HVQFN33 package. Channel selection is software-controlled, and conversions can be triggered by timer match events, software commands, or external edges-enabling synchronized sampling in sensor monitoring applications using the LPC1112JHN33/103E.
What is the purpose of the "J" in the part number LPC1112JHN33/103E?
The "J" in LPC1112JHN33/103E denotes the industrial temperature grade: −40 °C to +105 °C. This distinguishes it from "F"-grade variants (−40 °C to +85 °C) and confirms qualification for demanding environments such as enclosed lighting fixtures, HVAC controls, and factory automation panels where ambient heat buildup occurs. The "J" suffix is a manufacturer-defined marking for the LPC1112JHN33/103E.
Can the LPC1112JHN33/103E drive I²C devices at 1 Mbit/s?
Yes, the LPC1112JHN33/103E supports I²C Fast-mode Plus (Fm+) at up to 1 Mbit/s on its SCL/SDA pins (PIO0_4/PIO0_5). This requires external pull-up resistors and compliance with Fm+ bus capacitance limits (<550 pF). The I²C peripheral includes multi-address recognition and monitor mode-making it suitable for interfacing with high-speed sensors and EEPROMs in the LPC1112JHN33/103E design.
LPC1112JHN33/103E 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:
- 16KB (16K 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1112JHN33/103E FAQ
1.How can I place an order for LPC1112JHN33/103E through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1112JHN33/103E 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 LPC1112JHN33/103E reliable?
The price and inventory of LPC1112JHN33/103E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1112JHN33/103E is usually 5 days.
3.What payment methods are accepted for LPC1112JHN33/103E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1112JHN33/103E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1112JHN33/103E?
LPC1112JHN33/103E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1112JHN33/103E 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 LPC1112JHN33/103E?
For technical support, including LPC1112JHN33/103E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1112JHN33/103E requirements.
6.How does Aetrix verify that LPC1112JHN33/103E is sourced from the original manufacturer or authorized distributors?
All LPC1112JHN33/103E 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 LPC1112JHN33/103E meets industry standards.
7.What is the process for return or replacement of LPC1112JHN33/103E?
All LPC1112JHN33/103E units undergo pre-shipment inspection (PSI). If there is an issue with LPC1112JHN33/103E, 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 LPC1112JHN33/103E part is unused and in its original packaging.
Return procedure for LPC1112JHN33/103E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1112JHN33/103E Tags
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