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Microchip Technology LPC47N217-JV
- Part No.:
- LPC47N217-JV
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 64-LQFP
- Datasheet:
-
LPC47N217-JV.pdf
- Description:
- IC INTFACE SPECIALIZED 64STQFP
- Quantity:
- Payment:
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Product details
Overview
LPC47N217-JV from Microchip Technology is a 3.3 V, RoHS-compliant Super I/O controller implementing the LPC bus interface (19.2–33 MHz), featuring a 16C550A-compatible UART with 16-byte FIFO, IEEE 1284 EPP/ECP parallel port with ChiProtect™, IrDA v1.2 infrared controller, 14 GPIOs, and ACPI 2.0 compliance - deployed in legacy PC and embedded x86 platform management.
For engineers reviewing the LPC47N217-JV datasheet, LPC47N217-JV pinout, LPC47N217-JV application, or LPC47N217-JV equivalent, key selection considerations include LPC bus timing compatibility, serial/parallel/IrDA peripheral integration, software-configurable logic (SCL) for runtime reconfiguration, and 64-pin STQFP package constraints in space-constrained motherboard designs.
Technical Context
The LPC47N217-JV integrates an LPC host interface with multiplexed command/address/data lines, 8-bit I/O and DMA transfers, and 16-bit address qualification - enabling ISA/X-bus functional replacement with 64-pin footprint reduction. It supports Serial IRQ and PCI CLKRUN# for power-aware system coordination.
Its dual-serial architecture includes one full-function 16C550A UART (230/460 kbps, programmable baud generator) and a dedicated infrared UART supporting IrDA v1.2 (4 Mbps), HPSIR, ASKIR, and Consumer IR protocols - both sharing configurable I/O address spaces (96/192 base) and 15 IRQ/3 DMA options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LPC Bus Frequency | 19.2–33 MHz - defines maximum host-to-peripheral throughput and timing margin for legacy chipset coexistence. |
| UART FIFO Depth | 16-byte send/receive - reduces CPU interrupt load and enables reliable high-speed serial communication at 460 kbps. |
| Parallel Port Modes | IBM PC/AT, EPP 1.7/1.9, ECP - ensures backward compatibility and IEEE 1284 compliance for printer and scanner interfacing. |
| IrDA Speed | 4 Mbps (Fast IR) - enables high-bandwidth bidirectional data exchange with PDAs and mobile devices using infrared. |
| GPIO Count | 14 general-purpose I/O pins - provides flexible board-level control, status monitoring, and hardware customization without external logic. |
| Power Supply | 3.3 V operation with 5 V tolerant I/O - simplifies level-shifting design and supports mixed-voltage legacy peripheral attachment. |
| ACPI Compliance | ACPI 2.0 - enables OS-directed power management including SMI, PME#, and wake-event signaling for sleep/resume states. |
Pinout & Package
Package: 64-pin STQFP (7 mm × 7 mm × 1.4 mm body, 0.4 mm pitch), RoHS compliant, with 0.6 mm nominal lead foot length and 0.18 mm nominal lead width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LAD0–LAD3 | LPC Bus Data/Address | Multiplexed 4-bit bidirectional bus carrying command, address, and data - requires external latch or timing control for proper sampling. |
| LFRAME# | LPC Frame Strobe | Indicates start of LPC transaction cycle; synchronizes host-initiated I/O, DMA, or firmware memory access. |
| LDRQ# | LPC DMA Request | Asserted by LPC47N217-JV to request DMA channel arbitration from host chipset - essential for burst parallel port transfers. |
| IO_PME# | Power Management Event | Open-drain output signaling wake events (e.g., keyboard/mouse activity) to host chipset during S3/S4 sleep states. |
| IO_SMI# | System Management Interrupt | Triggers SMM handler execution for secure firmware services like password protection or hardware configuration lock. |
| TXD1/RXD1 | UART Channel 1 I/O | Asynchronous serial transmit/receive pair for primary COM port - compatible with standard 16C550A register mapping. |
| IRTX2/IRRX2 | Infrared Transmit/Receive | Dedicated IrDA PHY interface supporting 4 Mbps Fast IR modulation - isolated from main UART to prevent protocol interference. |
| PD0–PD7 | Parallel Port Data | 8-bit bidirectional data bus for EPP/ECP mode - supports handshaking via BUSY, nACK, SLCT, and nERROR signals. |
Key Features
| Feature | Design Value |
|---|---|
| ChiProtect™ Circuitry | Prevents latch-up or damage when powered printer is connected while LPC47N217-JV is unpowered - eliminates need for external isolation diodes. |
| Software Configurable Logic (SCL) | Enables runtime reassignment of I/O addresses, IRQs, and DMA channels via internal configuration registers - simplifies BIOS/firmware adaptation across platforms. |
| XNOR Chain Logic | Supports hardware-based logical combination of multiple GPIO inputs for custom interrupt generation - reduces firmware polling overhead. |
| PCI CLKRUN# Support | Allows host chipset to gate LPC47N217-JV clock during idle periods - directly contributes to platform-level dynamic power savings in mobile/embedded systems. |
| Serial IRQ Interface | Encodes up to 16 IRQ sources onto single SER_IRQ line using serialized packet format - conserves motherboard routing layers versus discrete IRQ lines. |
Applications
| Industrial Control Panel | Legacy Embedded PC |
|---|---|
|
Use Scenario: Fan speed monitoring, temperature sensor readout, and front-panel button input on DIN-rail mounted control hardware. IC Role / Device Role / Timing Role: Central I/O hub managing GPIO-triggered interrupts, UART-based Modbus RTU communication, and parallel port-connected status displays. Use Value: Eliminates need for discrete UART, parallel port, and GPIO expanders - reducing BOM count and PCB area while maintaining PC/AT compatibility. |
Use Scenario: Low-cost x86-based medical device requiring RS-232 diagnostics, infrared remote control, and parallel-connected barcode scanner. IC Role / Device Role / Timing Role: Integrated Super I/O providing synchronized UART, IrDA, and EPP interfaces under ACPI 2.0 power management for clinical-grade reliability. Use Value: Enables single-chip support for three distinct physical-layer interfaces with shared resource arbitration - minimizing latency between diagnostic logging and remote command execution. |
| Point-of-Sale Terminal | Thin Client Appliance |
|
Use Scenario: Receipt printer control, magnetic stripe reader interface, and customer display driver in retail kiosk hardware. IC Role / Device Role / Timing Role: Parallel port master with ChiProtect™ driving thermal printers; UART handling MSR data; GPIOs managing LED indicators and buzzer. Use Value: ChiProtect™ prevents field failures caused by hot-plugging powered receipt printers - increasing MTBF in high-turnover retail environments. |
Use Scenario: Remote desktop appliance booting from flash with local serial console, infrared keyboard support, and parallel-connected smart card reader. IC Role / Device Role / Timing Role: Firmware-managed I/O controller enabling OS-independent low-level device initialization and wake-on-IR functionality. Use Value: SMI# and PME# support allows secure firmware updates and zero-power wake-from-sleep - critical for energy-efficient managed deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Super I/O controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W83627DHG-P | 32-pin QFN package; lacks IrDA PHY; supports only 115.2 kbps UART max; no ChiProtect™ | Targeted at compact fanless systems where infrared is unused and printer hot-plug risk is mitigated externally | Select when board space is constrained and IrDA/ChiProtect™ are not required - verify LPC timing compatibility at 33 MHz. |
| Nuvoton NCT6776D | 64-pin QFP; adds hardware watchdog timer and voltage monitoring; supports LPC 4.0; 16C550A UART only (no dedicated IrDA) | Suitable for modern embedded PCs needing health monitoring and higher LPC bandwidth, but requires separate IR transceiver | Choose when system-level reliability features (watchdog, rail sensing) outweigh integrated infrared - confirm GPIO mapping alignment with LPC47N217-JV. |
Compared with Winbond W83627DHG-P and Nuvoton NCT6776D, the LPC47N217-JV uniquely combines IrDA v1.2 PHY, ChiProtect™, and XNOR chain logic in a single 64-pin STQFP - making it the only option for legacy x86 designs requiring certified hot-plug-safe parallel printing and 4 Mbps infrared without external components.
Availability
LPC47N217-JV is available at Aetrix Electronics and suitable for industrial control panels, legacy embedded PCs, point-of-sale terminals, and thin client appliances requiring stable component supply and long-term obsolescence management.
Supply support for LPC47N217-JV 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
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and interface ICs, with global manufacturing and quality certifications including ISO/TS 16949.
The LPC47N217-JV belongs to Microchip's legacy Super I/O product line, designed specifically to replace ISA-based I/O controllers in PC99/PC2001-compliant x86 platforms while enabling ACPI 2.0 power management and peripheral consolidation.
FAQ
What is the maximum supported baud rate for the primary UART in LPC47N217-JV?
The LPC47N217-JV primary UART supports up to 460 kbps, enabled by its high-speed 16C550A-compatible design and programmable baud rate generator. This capability is confirmed in the official Microchip datasheet DS00001810A, and applies specifically to the TXD1/RXD1 interface. The LPC47N217-JV achieves this rate using internal clock division without requiring external crystal tuning.
Does LPC47N217-JV support hot-plug safe parallel port operation?
Yes, the LPC47N217-JV incorporates ChiProtect™ circuitry that prevents damage when a powered printer is attached while the LPC47N217-JV is unpowered or in reset. This feature is explicitly documented in the datasheet and is implemented in silicon - eliminating reliance on external protection components. ChiProtect™ is active on the PD0–PD7, BUSY, and nACK signal paths within the LPC47N217-JV.
Is LPC47N217-JV pin-compatible with other Microchip Super I/O devices?
No, the LPC47N217-JV is not pin-compatible with other Microchip Super I/O parts such as the LPC47B272 or LPC47M102. Its 64-pin STQFP footprint, LAD0–LAD3 multiplexed bus, and dedicated IRTX2/IRRX2 pins define a unique pinout. Board-level replacement requires schematic and layout revision - the LPC47N217-JV must be treated as a standalone package and signal mapping entity.
What infrared protocols does the LPC47N217-JV support natively?
The LPC47N217-JV supports IrDA v1.2 (4 Mbps Fast IR), HPSIR, ASKIR, and Consumer IR protocols through its dedicated infrared UART interface (IRTX2/IRRX2). These are implemented in hardware and do not require firmware emulation. The datasheet confirms native support for all four formats, with separate configuration registers for mode selection and timing calibration within the LPC47N217-JV.
Can LPC47N217-JV operate with a 5 V supply?
No, the LPC47N217-JV operates exclusively at 3.3 V (Vcc), as specified in the Absolute Maximum Ratings and DC Characteristics sections of DS00001810A. However, its I/O pins are 5 V tolerant - meaning it can safely interface with 5 V peripherals without level shifters. Applying 5 V to Vcc will permanently damage the LPC47N217-JV.
LPC47N217-JV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- LPC
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 64-STQFP (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LPC47N217-JV FAQ
1.How can I place an order for LPC47N217-JV through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC47N217-JV 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 LPC47N217-JV reliable?
The price and inventory of LPC47N217-JV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC47N217-JV is usually 5 days.
3.What payment methods are accepted for LPC47N217-JV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC47N217-JV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC47N217-JV?
LPC47N217-JV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC47N217-JV 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 LPC47N217-JV?
For technical support, including LPC47N217-JV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC47N217-JV requirements.
6.How does Aetrix verify that LPC47N217-JV is sourced from the original manufacturer or authorized distributors?
All LPC47N217-JV 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 LPC47N217-JV meets industry standards.
7.What is the process for return or replacement of LPC47N217-JV?
All LPC47N217-JV units undergo pre-shipment inspection (PSI). If there is an issue with LPC47N217-JV, 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 LPC47N217-JV part is unused and in its original packaging.
Return procedure for LPC47N217-JV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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