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NXP Semiconductors LPC1112JHI33/203E
- Part No.:
- LPC1112JHI33/203E
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
LPC1112JHI33/203E.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 33HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,206
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Product details
Overview
LPC1112JHI33/203E from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in a 5×5 mm HVQFN33 package, featuring 16 kB flash, 4 kB SRAM, 10-bit ADC with 8 input channels, one UART with RS-485 support, one I²C-bus interface (Fast-mode Plus, 1 Mbit/s), and up to 28 GPIO pins - deployed in industrial temperature-grade (-40 °C to +105 °C) metering and lighting control systems.
For engineers reviewing the LPC1112JHI33/203E datasheet, LPC1112JHI33/203E pinout, LPC1112JHI33/203E application, or LPC1112JHI33/203E equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for embedded design and procurement decisions.
Technical Context
The LPC1112JHI33/203E belongs to the LPC1100XL series and integrates a windowed watchdog timer (WWDT), programmable power profiles in boot ROM, and configurable open-drain GPIO mode - enabling deterministic fail-safe operation and dynamic power/performance tuning. Its clock system combines a 12 MHz ±1 % internal RC oscillator, crystal oscillator (1–25 MHz), and PLL for CPU operation up to 50 MHz.
Peripheral architecture includes two SPI controllers (SSP-capable), four general-purpose timers (with capture/match capability), and an interrupt controller supporting edge- and level-sensitive GPIO interrupts. The 10-bit ADC supports multiplexed inputs across eight pins, with dedicated wake-up capability on selected channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC, up to 50 MHz operation - enables efficient execution of real-time control tasks with Thumb-2 instruction set. |
| Flash Memory | 16 kB on-chip flash with ISP/IAP support - sufficient for compact firmware with field-upgrade capability without external programmer. |
| SRAM | 4 kB on-chip SRAM - accommodates stack, heap, and real-time data buffers for sensor fusion or protocol stacks. |
| ADC | 10-bit SAR ADC with 8-channel multiplexer - provides sufficient resolution for analog sensor interfacing (e.g., current sensing, thermistor reading). |
| I²C Interface | Fast-mode Plus I²C (1 Mbit/s) with multi-address recognition - supports high-speed communication with multiple slave devices in space-constrained designs. |
| GPIO | 28 configurable GPIO pins with pull-up/pull-down, open-drain, and interrupt capability - enables direct connection to buttons, LEDs, relays, and digital sensors. |
| Operating Temp | -40 °C to +105 °C (J-grade) - qualified for under-hood automotive accessories, industrial motor controls, and outdoor lighting systems. |
Pinout & Package
HVQFN33 package: 5 mm × 5 mm × 0.85 mm body, 33-terminal no-lead thermal-enhanced quad flat package with exposed thermal pad - optimized for compact PCB layouts and improved thermal dissipation in sealed enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_0 | Reset input / GPIO port 0 pin 0 | Active-low hardware reset; dual-function pin usable as general-purpose I/O with interrupt capability. |
| XTALIN / XTALOUT | Crytal oscillator input/output | Supports external 1–25 MHz crystal for precise timing; optional bypass for internal RC oscillator use. |
| SWDIO / PIO1_3 / AD4 / CT32B1_MAT2 | Debug I/O / ADC channel 4 / Timer match output | Multi-function pin enabling SWD debugging, analog sensing, and timer event signaling - requires careful pinmux configuration. |
| PIO0_7 / CTS | UART clear-to-send input | Hardware flow control signal for robust RS-485 half-duplex communication in noisy industrial environments. |
| VDD / VSS | Power supply / Ground | Single 1.8–3.6 V supply rail; 33-terminal layout includes multiple VDD/VSS pairs for low-noise analog/digital separation. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer (WWDT) | Prevents runaway code via time-windowed refresh - critical for fail-safe operation in alarm systems and e-metering. |
| Programmable Power Profiles | Boot ROM-resident profiles enable one-call optimization of sleep/deep-sleep modes - reduces firmware development effort for battery-powered lighting nodes. |
| Configurable Open-Drain GPIO | Enables wired-AND logic, I²C bus driving, and level translation without external components - simplifies interface to legacy 5 V peripherals. |
| RS-485 UART Support | Integrated driver enable control and fractional baud rate generation - eliminates need for external transceivers in building automation networks. |
| Wake-up from Deep-sleep | Dedicated start logic allows wake-up via up to 13 GPIO pins - extends battery life in intermittent-sensing applications like smart thermostats. |
Applications
| Smart Energy Metering | LED Lighting Control |
|---|---|
Use Scenario: Residential and commercial electricity meters requiring tamper detection, pulse counting, and secure data logging. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing EEPROM storage, and communicating via RS-485 or I²C to sensor ICs. Use Value: 16 kB flash stores encryption keys and firmware updates; WWDT ensures reliable long-term operation in unattended deployments. | Use Scenario: Dimmable LED drivers with DALI or 0–10 V interface, thermal monitoring, and overcurrent protection. IC Role / Device Role / Timing Role: Real-time PWM generator and analog sensor hub coordinating LED current regulation and thermal shutdown. Use Value: 10-bit ADC reads thermistor and shunt voltage; 28 GPIO drive MOSFET gates and interface to external dimming ICs. |
| Industrial Alarm Systems | White Goods Control |
Use Scenario: Fire/smoke detection panels with multi-zone inputs, buzzer control, and CAN or RS-485 network reporting. IC Role / Device Role / Timing Role: Central alarm processor handling sensor polling, fault diagnostics, and communication protocol stack. Use Value: J-grade temperature range ensures reliability in panel enclosures; open-drain GPIO directly drives relay coils and optocouplers. | Use Scenario: Washing machine main control board managing motor phase control, water level sensing, and user interface. IC Role / Device Role / Timing Role: System supervisor coordinating motor driver signals, ADC-based pressure/temperature readings, and front-panel button/LED management. Use Value: 4 kB SRAM buffers sensor data during spin cycles; deep-sleep wake-up on door-open interrupt minimizes standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1112FHI33/203 | Same 16 kB flash, 4 kB SRAM, HVQFN33 package, but rated for -40 °C to +85 °C (F-grade) only. | Lacks extended temperature qualification - unsuitable for under-hood or outdoor industrial deployments. | Select when ambient operating temperature remains ≤85 °C and cost sensitivity outweighs thermal margin requirements. |
| LPC1113JHI33/203 | 24 kB flash, 4 kB SRAM, same J-grade temp range and HVQFN33 package - direct pin-compatible upgrade path. | Provides additional firmware space for bootloader, OTA updates, or enhanced feature sets without PCB change. | Choose when future firmware expansion or dual-application partitioning (e.g., safety + control) is anticipated. |
Compared with LPC1112JHI33/203E, the FHI33/203 variant sacrifices extended temperature capability for lower unit cost, while the LPC1113JHI33/203 offers 50 % more flash at identical thermal and mechanical compatibility - making it the preferred upgrade for scalable product families.
Availability
LPC1112JHI33/203E is available at Aetrix Electronics and suitable for smart energy metering, LED lighting control, and industrial alarm systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LPC1112JHI33/203E 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 LPC1112JHI33/203E - was designed for cost-sensitive, low-power embedded control in metering, lighting, and appliance applications where extended temperature operation and integrated analog peripherals are essential.
FAQ
What is the maximum operating frequency of the LPC1112JHI33/203E?
The LPC1112JHI33/203E 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 oscillator up to 25 MHz. This frequency enables real-time response in control loops and protocol processing without external clock sources.
Does the LPC1112JHI33/203E support in-system programming (ISP)?
Yes, the LPC1112JHI33/203E supports In-System Programming (ISP) via its built-in bootloader, allowing firmware updates through UART without requiring a dedicated debugger. This capability is fully functional across all operating conditions and is validated for use in field-deployed LPC1112JHI33/203E units.
How many ADC input channels does the LPC1112JHI33/203E provide?
The LPC1112JHI33/203E features a 10-bit ADC with multiplexed input selection across eight pins (AD0–AD7), as confirmed in the HVQFN33 pinout for the LPC1100XL series. All eight channels are accessible and functional in the LPC1112JHI33/203E package variant.
Is the LPC1112JHI33/203E pin-compatible with other LPC111x HVQFN33 variants?
Yes, the LPC1112JHI33/203E shares identical pinout and footprint with all LPC111x HVQFN33 packages (e.g., LPC1113JHI33/203, LPC1114JHI33/303), including matching power, ground, debug, and peripheral signal assignments - enabling drop-in replacement within the same package family.
What debug interface does the LPC1112JHI33/203E support?
The LPC1112JHI33/203E supports Serial Wire Debug (SWD) via dedicated SWDIO and SWCLK pins, providing full JTAG-equivalent functionality including breakpoints, memory inspection, and real-time register access - compatible with standard ARM Cortex-M0 debug probes and IDEs.
LPC1112JHI33/203E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-VFQFN 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:
LPC1112JHI33/203E FAQ
1.How can I place an order for LPC1112JHI33/203E through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1112JHI33/203E 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 LPC1112JHI33/203E reliable?
The price and inventory of LPC1112JHI33/203E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1112JHI33/203E is usually 5 days.
3.What payment methods are accepted for LPC1112JHI33/203E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1112JHI33/203E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1112JHI33/203E?
LPC1112JHI33/203E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1112JHI33/203E 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 LPC1112JHI33/203E?
For technical support, including LPC1112JHI33/203E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1112JHI33/203E requirements.
6.How does Aetrix verify that LPC1112JHI33/203E is sourced from the original manufacturer or authorized distributors?
All LPC1112JHI33/203E 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 LPC1112JHI33/203E meets industry standards.
7.What is the process for return or replacement of LPC1112JHI33/203E?
All LPC1112JHI33/203E units undergo pre-shipment inspection (PSI). If there is an issue with LPC1112JHI33/203E, 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 LPC1112JHI33/203E part is unused and in its original packaging.
Return procedure for LPC1112JHI33/203E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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