SCH3227/SCH3226/SCH3224/SCH3222 LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports - 480 Address and 15 IRQ Options Product Features - Support IRQ Sharing among serial ports General Features - RS485 Auto Direction Control Mode - 3.3 Volt Operation (SIO Block is 5 Volt Tolerant) Infrared Port - Programmable Wake-up Event (PME) Interface - Multiprotocol Infrared Interface - PC99, PC2001 Compliant - IrDA 1.0 Compliant - ACPI 2.0 Compliant - SHARP ASK IR - Serial IRQ Interface Compatible with Serialized - 480 Addresses, Up to 15 IRQ IRQ Support for PCI Systems Multi-Mode Parallel Port with ChiProtect - ISA Plug-and-Play Compatible Register Set - Available in SCH3227, SCH3224 - Four Address Options for Power On Configuration - Standard Mode IBM PC/XT, PC/AT, and PS/2 Port Compatible Bi-directional ParallelPort - System Management Interrupt (SMI) - Enhanced Parallel Port (EPP) Compatible - EPP - General Purpose I/O pins: see Table 1-1 1.7 and EPP 1.9 (IEEE 1284 Compliant) - GPIOs with VID compatible inputs: see Table 1-1 - IEEE 1284 Compliant Enhanced Capabilities Port - Support for power button on PS/2 Keyboard (ECP) - Security Key Register (32 byte) for Device Authen- - ChiProtect Circuitry for Protection tication - 960 Address, Up to 15 IRQ and Four DMA Options Low Pin Count Bus (LPC) Interface Hardware Monitor - Supports Bus frequencies of 19MHz to 33MHz - Available in SCH3227, SCH3226, SCH3224 Watchdog Timer - Monitor Power supplies (+2.5V, +5V, +12V, Vccp Resume and Main Power Good Generator (processor voltage), VCC, Vbat and Vtr. Programmable Clock Output to 16 Hz - Remote Thermal Diode Sensing for Two External Temperature Measurements accurate to 1.5C Keyboard Controller - Internal Ambient Temperature Measurement - 8042 Software Compatible - Limit Comparison of all Monitored Values - 8 Bit Microcomputer - Programmable Automatic FAN control based on - 2k Bytes of Program ROM temperature - 256 Bytes of Data RAM - nHWM INT Pin for out-of-limit Temperature or Volt- - Four Open Drain Outputs Dedicated for Keyboard/ age Indication Mouse Interface - Thermtrip signal for over temperature indication - Asynchronous Access to Two Data Registers and IDE Reset Output and 3 PCI Reset Buffers with One Status Register Software Control Capability (SCH3227 and - Supports Interrupt and Polling Access SCH3226 by strap option) - 8 Bit Counter Timer - Port 92 Support Power Button Control and AC Power Failure - Fast Gate A20 and KRESET Outputs Recovery (SCH3227 and SCH3226 by strap - Phoenix Keyboard BIOS ROM option) Multiple Serial Ports Temperature Ranges Available - 4 Full Function Serial Ports (SCH3227, SCH3226, - Industrial (+85C to -40C) SCH3222) - Commercial (+70C to 0C) - 2 Full Function Serial Ports (SCH3224) WFBGA RoHS Compliant Packages - Two additional 4-pin Serial Ports available by strap - 144-ball (SCH3227) option (SCH3227, SCH3226) - 100-ball (SCH3226, SCH3224) - Two additional 4-pin Serial Ports available always - 84-ball (SCH3222) (SCH3224, SCH3222) - High Speed NS16C550A Compatible UARTs with Send/Receive 16-Byte FIFOs - Supports 230k, 460k, 921k and 1.5M Baud - Programmable Baud Rate Generator - Modem Control Circuitry 2016 Microchip Technology Inc. DS00002108A-page 1SCH3227/SCH3226/SCH3224/SCH3222 TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: