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WPCN384U Legacy-Reduced SuperI/O with Two Serial Ports, Parallel Port and GPIOs for Notebook and Docking Applications
Product Brief
December 2006 Revision 1.0
WPCN384U Legacy-Reduced SuperI/O with Two Serial Ports, Parallel Port and GPIOs for Notebook and Docking Applications
General Description
The WPCN384U, a member of the Winbond LPC SuperI/O family, is targeted for a wide range of notebook and docking applications. The WPCN384U is PC2001 and ACPI compliant, and features two Serial Ports, Parallel Port and GeneralPurpose Input/Output (GPIO) support for a total of 21 ports. The WPCN384U is an optimized solution for notebook systems requiring no FIR Port, and for LPC-based docking stations implementing an on-board SuperI/O.
Outstanding Features

Pin and software compatible with the Winbond 87384 Two Serial Ports LPC bus interface, based on Intel's LPC Interface Specification Revision 1.1, August 2002 (supports CLKRUN and LPCPD signals) PC2001 and ACPI Revision 3.0 compliant IEEE 1284 Parallel Port 21 GPIO ports, including 14 with IRQ assertion capability Two testability modes (XOR Tree and TRI-STATE(R) device pins). 5V tolerant and back-drive protected pins (except LPC bus pins) 64-pin TQFP package

System Block Diagram
I/O Ports South Bridge LPC Bus
Parallel Port Interface
Portable Platform
WPCN384U
EC (WPC876xL) Serial Interface Serial Interface
TPM (WPCT200)
(c) 2006 Winbond Electronics Corporation
www.winbond.com
WPCN384U
Features
Two Serial Ports (SP1 and SP2) -- Software compatible with the 16550A and the 16450 -- Shadow register support for write-only bit monitoring -- UART data rates up to 1.5 Mbaud IEEE 1284-Compliant Parallel Port -- ECP, with Level 2 (14 mA sink and source output buffers) -- Software or hardware control -- Enhanced Parallel Port (EPP) compatible with EPP 1.7 and EPP 1.9 -- Supports EPP as mode 4 of the Extended Control Register (ECR) -- Selection of internal pull-up or pull-down resistor for Paper End (PE) pin -- Supports a demand DMA mode mechanism and a DMA fairness mechanism for improved bus utilization -- Protection circuit that prevents damage to the parallel port when a printer connected to it is powered up or is operated at high voltages (in both cases, even if the WPCN384U is in power-down state) 21 General-Purpose I/O (GPIO) Ports -- Supports IRQ assertion -- Programmable drive type for each output pin (opendrain, push-pull or output disable) -- Programmable option for internal pull-up resistor on each input pin -- Output lock option -- Input debounce mechanism
LPC System Interface -- 8-bit I/O cycles -- LPCPD and CLKRUN support -- Implements PCI mobile design guide recommendation (PCI Mobile Design Guide 1.1, Dec. 18, 1998) PC2001 and ACPI 3.0 Compliant -- PnP Configuration Register structure -- Flexible resource allocation for all logical devices Relocatable base address

15 IRQ routing options Optional 8-bit DMA channels (where applicable) selected from four possible DMA channels
Clock Sources -- 14.318 MHz or 48 MHz clock input -- LPC clock, 0 or 30 MHz to 33 MHz Strap Configuration -- Base Address (BADDR) strap to determine the base address of the Index-Data register pair -- Strap Inputs to select testability mode Power Supply -- 3.3V supply operation -- All pins are 5V tolerant, except LPC bus pins -- All pins are back-drive protected, except LPC bus pins Testability -- XOR Tree -- TRI-STATE device pins

Internal Block Diagram
14.31818 MHz LPC Interface Parallel Port Interface IEEE 1284 Parallel Port Bus Interface
Clock Generator
48 MHz GPIO Ports Serial Port Serial Port
Ports I/O
Serial Interface
Serial Interface
www.winbond.com
2
Revision 1.0
WPCN384U Legacy-Reduced SuperI/O with Two Serial Ports, Parallel Port and GPIOs for Notebook and Docking Applications
Physical Dimensions
All dimensions are in millimeters
64-Pin Thin Quad Flatpack (TQFP) Order Number WPCN384U_0MG (Replace "_" with chip revision: A, B, and so on)
Important Notice Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Furthermore, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
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Winbond Electronics Corporation America 2727 North First Street, San Jose, CA 95134, U.S.A. TEL: 1-408-9436666 FAX: 1-408-5441798
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Winbond Electronics Corporation Japan 7F Daini-ueno BLDG, 3-7-18 Shinyokohama Kohoku-ku, Yokohama, 222-0033 TEL: 81-45-4781881 FAX: 81-45-4781800
Winbond Electronics (H.K.) Ltd. Unit 9-15, 22F, Millennium City, No. 378 Kwun Tong Rd., Kowloon, Hong Kong TEL: 852-27513100 FAX: 852-27552064
For Advanced PC Product Line information contact: APC.Support@winbond.com Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this product brief belong to their respective owners. www.winbond.com

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