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Microchip Technology LPC47N207-JV
- Part No.:
- LPC47N207-JV
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 64-LQFP
- Datasheet:
-
LPC47N207-JV.pdf
- Description:
- IC INTFACE SPECIALIZED 64STQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
LPC47N207-JV from SMSC is a 3.3 V, RoHS-compliant LPC Super I/O controller with integrated IrDA v1.2 (4 Mbps), dual UARTs (one 16C550A-compatible with 16-byte FIFOs, one infrared-focused), 16 GPIOs, SMI/IO_PME# support, and hot-dockable LPC PortSwitch™ interface - deployed in legacy PC docking stations and industrial embedded baseboards requiring ACPI 1.0 and PC99a compliance.
For engineers reviewing the LPC47N207-JV datasheet, LPC47N207-JV pinout, LPC47N207-JV application, or LPC47N207-JV equivalent, key selection criteria include LPC bus timing compatibility, IrDA physical layer support (HPSIR/ASKIR/Consumer IR), serial IRQ serialization for PCI systems, programmable wake-up event routing via IO_PME#, and STQFP-64 package thermal and layout constraints.
Technical Context
The LPC47N207-JV implements a multiplexed 8-bit LPC host interface with 16-bit address qualification, serial IRQ signaling, and nCLKRUN support for PCI power management. It integrates two independent UART channels: UART1 is a full-function 16C550A-compatible port with modem control signals and 230/460 kbps baud rates; UART2 is dedicated to infrared communication with IrTX/IrRX pins and protocol support for IrDA v1.2, HPSIR, ASKIR, and Consumer IR.
Its LPC PortSwitch™ interface provides a secondary, hot-switchable LPC bus with buffered 14 MHz clock output and switched PCI clock capability. Power management includes Software Configurable Logic (SCL) for runtime reconfiguration of UARTs and GPIOs, plus Intelligent Auto Power Management enabling multiple low-power down modes compliant with ACPI 1.0 specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Supply | 3.3 V operation with 5 V tolerant I/O pins - enables direct interfacing with legacy 5 V peripherals without level shifters. |
| LPC Interface | Multiplexed command/address/data bus, 8-bit I/O and DMA transfers, 16-bit address qualification - matches Intel LPC specification for chipset interoperability. |
| UARTs | Two independent UARTs: UART1 supports 16C550A register set, 16-byte FIFOs, and modem control; UART2 supports IrDA v1.2 (4 Mbps), HPSIR, ASKIR, and Consumer IR protocols. |
| GPIOs | 16 general-purpose I/O pins with programmable internal pull-up resistors - configurable as inputs, outputs, or alternate functions including IRQIN1/IRQIN2 and XNOR chain logic. |
| Power Management | IO_PME# and IO_SMI# pins, ACPI 1.0 and PC99a compliance, multiple low-power down modes - enables OS-directed suspend/resume and wake-on-event functionality. |
| Package | 64-pin STQFP, lead-free, RoHS-compliant - 9.0 mm × 9.0 mm body, 0.4 mm pitch, suitable for high-density PCB layouts with standard reflow profiles. |
Pinout & Package
64-pin STQFP (Small Thin Quad Flat Package), RoHS-compliant, 0.4 mm pitch, 9.0 mm × 9.0 mm body size, 1.4 mm nominal height. Pin 1 marked by corner cut or dot; leads coplanar within 0.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LAD[3:0] | LPC Address/Data Bus | Multiplexed 4-bit bidirectional bus carrying LPC commands, addresses, and data - requires external latching and timing alignment with LFRAME#. |
| LFRAME# | LPC Frame Strobe | Indicates start/end of LPC transaction cycle; active-low, synchronous with LPC_CLK_33 - critical for bus arbitration and timing validation. |
| LDRQ0#/LDRQ1# | LPC DMA Request | Open-drain DMA request signals supporting three DMA channel options - used for burst-mode data transfer coordination with host chipset. |
| IO_PME# | Power Management Event | Active-low wake signal asserted by device to initiate system resume from S3/S4 states - routed to southbridge PME# input per ACPI spec. |
| IO_SMI# | System Management Interrupt | Active-low SMI assertion for firmware-level configuration and security operations - triggers SMM handler in BIOS/UEFI environment. |
| IRTX2 / IRRX2 | Infrared Transmit/Receive | Dedicated 2-pin IR interface for UART2 - supports IrDA v1.2 (4 Mbps), HPSIR, ASKIR, and Consumer IR modulation schemes. |
| GP30–GP37, GP10–GP11, GP15–GP17 | General Purpose I/O | 16 programmable GPIOs with internal pull-ups - configurable as IRQ inputs, XNOR chain elements, or custom control signals under SCL register control. |
Key Features
| Feature | Design Value |
|---|---|
| LPC PortSwitch™ Interface | Hot-switchable secondary LPC bus with buffered 14 MHz clock and switched PCI clock output - enables dynamic docking station attachment without system reset. |
| IrDA v1.2 + HPSIR/ASKIR Support | Single-chip infrared PHY layer implementation eliminating need for external transceivers in PDA sync, remote control, and industrial telemetry applications. |
| Software Configurable Logic (SCL) | Runtime reprogramming of UART configurations, GPIO directions, and interrupt mappings via internal registers - reduces BIOS/firmware customization effort. |
| ACPI 1.0 & PC99a Compliance | Fully implements required power states (S0–S5), wake events, and Plug-and-Play resource allocation - ensures Windows 9x/2000/XP driver compatibility and certification readiness. |
| Programmable Baud Rate Generator | Supports precise 230 kbps and 460 kbps UART rates using internal dividers - eliminates external crystal requirements for high-speed serial links. |
Applications
| Industrial Docking Stations | Legacy PC Baseboard Management |
|---|---|
Use Scenario: Hot-docking of expansion modules into ruggedized industrial PCs operating in factory automation environments. IC Role / Device Role / Timing Role: LPC47N207-JV acts as the primary Super I/O hub managing serial comms, IR-based module identification, and wake-on-dock events via IO_PME#. Use Value: Enables seamless module insertion/removal without OS reboot; LPC PortSwitch™ isolates docked peripherals while maintaining host LPC integrity. | Use Scenario: Embedded control boards in medical imaging devices requiring reliable serial diagnostics, IR service access, and ACPI-compliant power sequencing. IC Role / Device Role / Timing Role: LPC47N207-JV serves as the system's legacy I/O controller, providing UART1 for debug console, UART2 for IR service port, and GPIOs for hardware monitoring. Use Value: Integrates dual UARTs, 16 GPIOs, and SMI/PME signaling in one RoHS-compliant STQFP-64 package - reducing BOM count and board space vs. discrete solutions. |
| ACPI-Compliant KVM-over-IP Modules | Consumer IR Remote Interface Boards |
Use Scenario: Remote management modules in server rack infrastructure where serial console access and secure SMI-triggered firmware updates are required. IC Role / Device Role / Timing Role: LPC47N207-JV delivers Serial IRQ signaling compatible with PCI systems, IO_SMI# for secure firmware entry, and relocatable I/O ports for KVM multiplexer integration. Use Value: Eliminates need for separate SMI controller and UART bridge ICs; supports serialized IRQ routing and nCLKRUN handshake for power-aware KVM operation. | Use Scenario: Set-top box or digital signage controllers needing universal IR remote support across consumer electronics brands. IC Role / Device Role / Timing Role: LPC47N207-JV operates UART2 in Consumer IR mode, decoding NEC, RC-5, and Sony protocols via its ASKIR-capable IR receiver path. Use Value: Native ASKIR and Consumer IR support replaces external IR decoder ICs; GPIOs configure carrier frequency and demodulation thresholds in real time. |
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 |
|---|---|---|---|
| SMSC LPC47B272-JV | Same STQFP-64 package, adds third UART and enhanced GPIO interrupt capabilities; lacks IrDA v1.2 PHY but retains HPSIR/ASKIR support. | Better suited for multi-serial-port industrial gateways; not drop-in for IrDA 4 Mbps use cases requiring Fast IR timing. | Select LPC47B272-JV only if additional UART bandwidth and GPIO flexibility outweigh loss of native IrDA v1.2 compliance. |
| Nuvoton NCT6776D | Modern 128-pin QFP, supports LPC 1.1, includes hardware watchdog, temperature sensor, and fan control - no IrDA or PortSwitch™ functionality. | Targeted at modern ATX motherboards and server BMCs; incompatible with hot-dock architectures due to missing LPC PortSwitch™ and IO_PME# routing. | Choose NCT6776D for new designs requiring integrated thermal monitoring and advanced power management - not for legacy docking or IR-centric applications. |
Compared with LPC47N207-JV, LPC47B272-JV trades IrDA v1.2 support for extra UART resources and GPIO intelligence, while NCT6776D abandons docking and IR entirely in favor of sensor-rich, modern platform management - making LPC47N207-JV uniquely positioned for IR-enabled hot-dock systems.
Availability
LPC47N207-JV is available at Aetrix Electronics and suitable for industrial docking stations, legacy PC baseboard management, ACPI-compliant KVM-over-IP modules, and consumer IR remote interface boards requiring stable component supply and long-term obsolescence planning.
Supply support for LPC47N207-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
SMSC (Standard Microsystems Corporation) was a fabless semiconductor company specializing in connectivity, embedded control, and mixed-signal ICs before its acquisition by Microchip Technology in 2012.
The LPC47N207-JV belongs to SMSC's LPC Super I/O product line, designed specifically for legacy PC and industrial embedded platforms requiring ACPI-compliant I/O consolidation, hot-dock capability, and integrated infrared communication - not general-purpose microcontrollers or modern platform controllers.
FAQ
What is the primary function of the LPC47N207-JV in a system architecture?
The LPC47N207-JV serves as a Super I/O controller that consolidates legacy PC I/O functions onto a single chip. It manages two UARTs (one standard, one infrared-focused), 16 GPIOs, ACPI-compliant power management signals (IO_PME#, IO_SMI#), and a hot-switchable LPC PortSwitch™ interface. In systems like industrial docking stations, the LPC47N207-JV acts as the central I/O hub bridging the host chipset to serial peripherals, IR devices, and expansion modules - all while maintaining PC99a and ACPI 1.0 compliance.
Does the LPC47N207-JV support true IrDA v1.2 (Fast IR) operation at 4 Mbps?
Yes, the LPC47N207-JV explicitly supports IrDA v1.2 (Fast IR) at up to 4 Mbps on its dedicated UART2 infrared interface. This is confirmed in the product preview and block diagram, which specify IrTX2/IRRX2 pins and list "IrDA v1.2 (4Mbps)" as a core feature. The device also supports complementary infrared protocols including HPSIR, ASKIR, and Consumer IR - making the LPC47N207-JV suitable for high-speed PDA synchronization and industrial telemetry where raw IR throughput matters.
Can the LPC47N207-JV be used as a direct replacement for the LPC47M102 or LPC47B272 in existing designs?
No, the LPC47N207-JV is not a pin-compatible or functional drop-in replacement for LPC47M102 or LPC47B272. While all belong to SMSC's LPC Super I/O family and share the STQFP-64 package, their UART configurations, IR capabilities, and PortSwitch™ implementation differ. The LPC47N207-JV uniquely integrates IrDA v1.2 PHY and hot-dock switching logic absent in LPC47M102, and lacks the third UART present in LPC47B272-JV. Any substitution requires full electrical, timing, and firmware validation - especially for IO_PME# routing and UART2 IR signal integrity.
What are the key thermal and mechanical considerations for the LPC47N207-JV STQFP-64 package?
The LPC47N207-JV uses a 64-pin STQFP package with 0.4 mm pitch, 9.0 mm × 9.0 mm body size, and 1.4 mm nominal height. Its maximum solder reflow peak temperature is 260°C (per RoHS lead-free requirements), and coplanarity is controlled to ≤0.08 mm. Thermal design must account for typical power dissipation of ~350 mW at 3.3 V; recommended PCB layout includes thermal vias under the exposed pad (if present) and adequate copper pour on inner layers. The package outline specifies strict lead foot length (0.45–0.75 mm) and standoff (0.05–0.15 mm) tolerances critical for automated assembly yield.
How does the LPC PortSwitch™ interface in the LPC47N207-JV enable hot-docking functionality?
The LPC PortSwitch™ interface in the LPC47N207-JV provides a secondary, electrically isolated LPC bus with dedicated control lines (DLAD[3:0], DLFRAME#, DLDRQ1#, nDCLKRUN), buffered 14 MHz clock output (SIO_14M), and switched PCI clock capability. During hot-dock events, the LPC47N207-JV dynamically routes LPC traffic between host and docked peripherals without resetting the main LPC bus. This isolation prevents bus contention and allows safe insertion/removal of expansion modules - a capability verified in reference designs for industrial docking stations and confirmed in the LPC47N207-JV block diagram and product preview documentation.
LPC47N207-JV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Controller
- Interface:
- LPC
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 64-STQFP (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LPC47N207-JV FAQ
1.How can I place an order for LPC47N207-JV through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC47N207-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 LPC47N207-JV reliable?
The price and inventory of LPC47N207-JV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC47N207-JV is usually 5 days.
3.What payment methods are accepted for LPC47N207-JV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC47N207-JV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC47N207-JV?
LPC47N207-JV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC47N207-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 LPC47N207-JV?
For technical support, including LPC47N207-JV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC47N207-JV requirements.
6.How does Aetrix verify that LPC47N207-JV is sourced from the original manufacturer or authorized distributors?
All LPC47N207-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 LPC47N207-JV meets industry standards.
7.What is the process for return or replacement of LPC47N207-JV?
All LPC47N207-JV units undergo pre-shipment inspection (PSI). If there is an issue with LPC47N207-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 LPC47N207-JV part is unused and in its original packaging.
Return procedure for LPC47N207-JV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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