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Microchip Technology LPC47N217N-ABZJ-TR
- Part No.:
- LPC47N217N-ABZJ-TR
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
LPC47N217N-ABZJ-TR.pdf
- Description:
- IC INTERFACE SPECIALIZED 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,288
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Product details
Overview
LPC47N217N-ABZJ-TR from SMSC is a 3.3 V, ACPI 2.0–compliant Super I/O controller with LPC interface, integrated 16C550A-compatible UART (16-byte FIFO, up to 460 kbps), IEEE 1284 EPP/ECP parallel port with ChiProtect™, and 13 GPIOs - deployed in PC/AT and embedded industrial host platforms for legacy I/O consolidation.
For engineers reviewing the LPC47N217N-ABZJ-TR datasheet, LPC47N217N-ABZJ-TR pinout, LPC47N217N-ABZJ-TR application, or LPC47N217N-ABZJ-TR equivalent, key selection criteria include LPC bus timing compliance, serial/parallel port configurability via SCL registers, IO_PME# and IO_SMI# support, and QFN-56 RoHS package compatibility with PC2001 system requirements.
Technical Context
The LPC47N217N-ABZJ-TR implements a multiplexed 8-bit LPC bus with 16-bit address qualification, Serial IRQ interface, and PCI CLKRUN# support - enabling direct integration into low-pin-count x86 host systems. It features Software Configurable Logic (SCL) for runtime reconfiguration of UART base address, IRQ, and DMA channel assignments.
Its parallel port supports IBM PC/AT, EPP 1.7/1.9, and ECP modes with hardware ChiProtect™ to prevent damage from powered printers during unpowered states. The device includes two dedicated IRQ input pins, XNOR chain logic for system-level event chaining, and full ISA Plug-and-Play v1.0a register mapping for Windows OS compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LPC Interface | Multiplexed 8-bit command/address/data bus with 16-bit address qualification; enables pin-reduced ISA replacement in modern x86 motherboards. |
| UART | 16C550A-compatible with 16-byte TX/RX FIFO, programmable baud generator, 230/460 kbps max; eliminates external UART IC in legacy COM port designs. |
| Parallel Port | Multi-mode (Standard, EPP 1.7/1.9, ECP) with ChiProtect™ circuitry; prevents latch-up or damage when printer is powered while LPC47N217N-ABZJ-TR is unpowered. |
| GPIO Count | 13 general-purpose I/O pins with configurable direction and interrupt capability; provides flexible board-level control and status monitoring. |
| Power & Compliance | 3.3 V operation (5 V tolerant), ACPI 2.0 and PC2001 compliant; meets core platform power management and interoperability requirements. |
| Package | 56-pin QFN, 8 mm × 8 mm body, 0.5 mm pitch, RoHS-compliant lead-free; surface-mount compatible with standard reflow profiles. |
Pinout & Package
56-pin QFN package (JEDEC MO-220, MO-56-QFN-8x8), 8 mm × 8 mm body, 0.5 mm pitch, exposed thermal pad. Pin 1 identifier located per JEDEC standard in top-left corner area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LAD0–LAD3 | LPC Bus Data/Address | Multiplexed 4-bit bidirectional bus for LPC command, address, and data transfers. |
| LFRAME# | LPC Frame Strobe | Indicates start/end of LPC transaction cycle; synchronizes host-to-device communication. |
| LDRQ# | LPC DMA Request | Active-low signal requesting DMA service from host; supports 8-bit DMA transfers. |
| LPCPD# | LPC Power Down | Enables low-power suspend mode on LPC bus; reduces system standby current. |
| IO_PME# | Power Management Event | Wakes host from S3/S4/S5 sleep states upon configured peripheral activity (e.g., UART RX, GPIO edge). |
| IO_SMI# | System Management Interrupt | Triggers SMM handler for secure firmware operations like BIOS configuration or thermal shutdown. |
| TXD1/RXD1 | UART Channel 1 I/O | Full-duplex serial interface supporting legacy COM port functionality with hardware flow control signals. |
| PD[0:7] | Parallel Port Data | 8-bit bidirectional data bus for Standard, EPP, or ECP parallel port operation. |
| GP10–GP14, GP23, GP4[1:7] | GPIO Terminals | 13 individually configurable digital I/Os; usable as inputs with interrupt, outputs with drive strength control, or alternate functions. |
Key Features
| Feature | Design Value |
|---|---|
| Software Configurable Logic (SCL) | Runtime reprogramming of UART/parallel port I/O addresses, IRQ assignments, and DMA channels without hardware changes. |
| ChiProtect™ Circuitry | Hardware isolation between parallel port and attached printer power domains; prevents latch-up and component stress during mismatched power sequencing. |
| Serial IRQ Interface | Serialized interrupt signaling compatible with PCI systems; reduces IRQ pin count and eliminates shared interrupt conflicts. |
| PCI CLKRUN# Support | Enables dynamic clock gating for LPC bus during idle periods; lowers platform power consumption in mobile/embedded applications. |
| XNOR Chain Logic | Hardware event propagation path linking multiple Super I/O devices; simplifies system-level wakeup and SMI event coordination. |
Applications
| Industrial Control Panel | Legacy Embedded PC |
|---|---|
Use Scenario: Fanless x86-based HMI panel requiring RS-232 serial console, parallel printer interface, and GPIO for sensor readback and relay control. IC Role / Device Role / Timing Role: Centralized I/O hub managing UART debug port, ECP printer output, and 13 GPIOs for discrete I/O expansion. Use Value: Eliminates need for separate UART, parallel port, and GPIO expander ICs - reducing BOM cost and PCB area by >40%. | Use Scenario: Retrofit of aging ATX motherboard where ISA slots are removed but legacy COM/LPT ports must be retained for field equipment compatibility. IC Role / Device Role / Timing Role: LPC-based Super I/O replacing discontinued ISA-bus I/O chips while maintaining identical software driver stack. Use Value: Full Plug-and-Play v1.0a register compatibility ensures zero-modification Windows driver reuse and BIOS initialization continuity. |
| Medical Diagnostic Terminal | POS Kiosk System |
Use Scenario: UL-certified diagnostic workstation requiring safe power sequencing with powered peripherals (e.g., label printer) connected before main power-on. IC Role / Device Role / Timing Role: Parallel port controller with ChiProtect™ enabling hot-attach safety for medical-grade printers. Use Value: Prevents field failures caused by printer-induced latch-up during cold-start sequences - critical for regulatory compliance. | Use Scenario: Retail kiosk using parallel-connected receipt printer and serial-connected barcode scanner, with GPIOs driving LED indicators and button inputs. IC Role / Device Role / Timing Role: Single-chip I/O aggregator handling concurrent serial, parallel, and GPIO traffic under Windows CE or Linux. Use Value: SCL-configurable IRQ/DMA avoids resource conflicts in constrained embedded OS environments with limited interrupt vectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Super I/O applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Nuvoton NCT6776D | 64-pin QFN, integrated hardware monitor, no ChiProtect™, supports SMBus instead of LPC-only interface. | Requires SMBus host controller; lacks parallel port ChiProtect™ for hot-attached printers. | Select when thermal monitoring is required and parallel port safety is secondary. |
| ITE IT8728F | 128-pin LQFP, supports both LPC and ISA interfaces, includes fan control PWM, no ECP mode. | Higher pin count increases layout complexity; EPP-only parallel port limits high-speed printer compatibility. | Select for legacy ISA-based designs or when fan speed regulation is mandatory. |
Compared with NCT6776D and IT8728F, the LPC47N217N-ABZJ-TR uniquely delivers ChiProtect™-enabled IEEE 1284 ECP parallel operation in a compact 56-pin QFN, making it optimal for space-constrained, printer-critical industrial PCs where safe hot-attach is non-negotiable.
Availability
LPC47N217N-ABZJ-TR is available at Aetrix Electronics and suitable for industrial control panels, legacy embedded PCs, and medical diagnostic terminals requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for LPC47N217N-ABZJ-TR 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, timing, and embedded I/O solutions before its acquisition by Microchip Technology in 2012.
The LPC47N217N-ABZJ-TR belongs to SMSC's Super I/O product line, designed specifically to consolidate legacy PC I/O functions - serial, parallel, GPIO, and power management - onto a single LPC-interfaced chip for x86 platform cost and footprint reduction.
FAQ
What is the operating voltage range for the LPC47N217N-ABZJ-TR?
The LPC47N217N-ABZJ-TR operates at 3.3 V nominal with 5 V tolerance on all I/O pins. This allows direct interfacing with legacy 5 V peripherals without level-shifting circuitry, while maintaining compatibility with modern low-voltage host platforms. Its internal regulators and logic are optimized for stable 3.3 V supply operation across industrial temperature ranges.
Does the LPC47N217N-ABZJ-TR support ECP mode on its parallel port?
Yes, the LPC47N217N-ABZJ-TR fully supports IEEE 1284 Enhanced Capabilities Port (ECP) mode in addition to Standard and EPP modes. Its parallel port implements hardware compression, channel addressing, and DMA-driven data transfer - enabling high-throughput bidirectional communication with modern printers and scanners without CPU overhead.
How does ChiProtect™ function in the LPC47N217N-ABZJ-TR?
ChiProtect™ in the LPC47N217N-ABZJ-TR is a hardware isolation circuit that electrically decouples the parallel port data lines from the internal logic when the device is unpowered. This prevents back-driving and latch-up if a powered printer is connected before system power-up - a known failure mode in medical and industrial deployments where peripheral power sequencing is uncontrolled.
Can the LPC47N217N-ABZJ-TR be used in ACPI-compliant suspend/resume cycles?
Yes, the LPC47N217N-ABZJ-TR is ACPI 2.0 compliant and supports full S3/S4/S5 sleep state transitions. Its IO_PME# pin generates wake events from UART receive, GPIO edge detection, or parallel port activity, allowing the host to resume operation without polling - essential for energy-efficient embedded systems meeting ErP Lot 6 requirements.
Is the LPC47N217N-ABZJ-TR pin-compatible with other SMSC Super I/O devices?
No, the LPC47N217N-ABZJ-TR is not pin-compatible with other SMSC Super I/O devices such as the LPC47B272 or LPC47M102 due to differences in pin assignment, package size (56-pin QFN vs. 100-pin QFP), and internal signal routing. Board-level redesign is required for substitution; only software register compatibility is maintained across the LPC47N family.
LPC47N217N-ABZJ-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller
- Interface:
- LPC
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 56-QFN
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LPC47N217N-ABZJ-TR FAQ
1.How can I place an order for LPC47N217N-ABZJ-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC47N217N-ABZJ-TR 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 LPC47N217N-ABZJ-TR reliable?
The price and inventory of LPC47N217N-ABZJ-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC47N217N-ABZJ-TR is usually 5 days.
3.What payment methods are accepted for LPC47N217N-ABZJ-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC47N217N-ABZJ-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC47N217N-ABZJ-TR?
LPC47N217N-ABZJ-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC47N217N-ABZJ-TR 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 LPC47N217N-ABZJ-TR?
For technical support, including LPC47N217N-ABZJ-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC47N217N-ABZJ-TR requirements.
6.How does Aetrix verify that LPC47N217N-ABZJ-TR is sourced from the original manufacturer or authorized distributors?
All LPC47N217N-ABZJ-TR 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 LPC47N217N-ABZJ-TR meets industry standards.
7.What is the process for return or replacement of LPC47N217N-ABZJ-TR?
All LPC47N217N-ABZJ-TR units undergo pre-shipment inspection (PSI). If there is an issue with LPC47N217N-ABZJ-TR, 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 LPC47N217N-ABZJ-TR part is unused and in its original packaging.
Return procedure for LPC47N217N-ABZJ-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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