LPC47N252

LPC47N252 PRELIMINARY _ Advanced Notebook I/O Controller with On-Board FLASH FEATURES § 3.3V Operation with 5V Tolerant Buffers § ACPI 1.0b , PC99/PC2001 Compliant § LPC Interface with Clock Run Support − Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems − 15 Direct IRQs − Four 8-Bit DMA Channels − ACPI SCI Interface − nSMI − Shadowed write only registers § Internal 64K Flash ROM − Programmed From Direct Parallel Interface, 8051, or LPC Host − 2k-Byte Lockable Boot Block − Can be Programed Without 8051 Intervention § Three Power Planes − Low Standby Current in Sleep Mode − Intelligent Auto Power Management for Super I/O § ACPI Embedded Controller Interface § Configuration Register Set Compatible with ISA Plug-and-Play Standard (Version 1.0a) § High-Performance Embedded 8051 Keyboard and System Controller − Provides System Power Management − System Watch Dog Timer (WDT) − 8042 Style Host Interface − Supports Interrupt and Polling Access − 256 Bytes Data RAM − On-Chip Memory-Mapped Control Registers − Access to RTC and CMOS Registers − Up to 16x8 Keyboard Scan Matrix − Two 16 Bit Timer/Counters − Integrated Full-Duplex Serial Port Interface − Eleven 8051 Interrupt Sources − Thirty-Two 8-Bit, Host/8051 Mailbox Registers − Thirty-six Maskable Hardware Wake-Up Events − Fast GATEA20 − Fast CPU_RESET − Multiple Clock Sources and Operating Frequencies − IDLE and SLEEP Modes − Fail-Safe Ring Oscillator § Advanced Infrared Communications Controller (IrCC 2...