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PC87570-ICC/VUL 数据表(PDF) 1 Page - National Semiconductor (TI) |
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PC87570-ICC/VUL 数据表(HTML) 1 Page - National Semiconductor (TI) |
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1 / 168 page  1 - January 1998 www.national.com © 1998 National Semiconductor Corporation PRELIMINARY April 1998 PC87570 Keyboard and Power Management Controller Highlights General Description The PC87570 is a highly integrated embedded RISC-based controller optimized for power management (PM), keyboard and mouse (KBC) and system control in portable Personal Computer (PC) applications. The PC87570 incorporates National’s CompactRISC ™ CR16A core, a high performance 16-bit RISC processor core, a Bus Interface Unit (BIU) that directly interfaces with memory and I/O devices, on-chip memory and system sup- port functions. Among these are legacy functions, handled by the Host Bus Interface (HBI), that include the Real-Time Clock and Advanced Power Control (RTC and APC), and peripherals, including: frequency-multiplier-based High Fre- quency Clock Generator (HFCG), Power Mode Control (PMC), Interrupt Control Unit (ICU), Multi-Input Wake-Up (MIWU), General Purpose I/O Ports (GPIO) with internal keyboard matrix scanning, PS/2® Interface, ACCESS.bus® (ACB) Interface, two Multi-Function 16-Bit Timers (MFT16), periodic interrupt timer and WATCHDOG ™ (TWD), ADC and DAC. The PC87570 highly efficient architecture and its on-chip peripherals, supporting functions and low power consump- tion, provide a highly integrated solution for portable note- book PCs, sub-notebook PCs and other portable devices. Outstanding Features q Shared BIOS memory q Fully ACPI-compliant embedded controller q Proprietary PS/2 shift mechanism q Extremely low current consumption in Idle mode q Support for a variety of off-chip wake-up sources q Scalable design for growth without controller upgrade Block Diagram Core Bus Peripheral Bus Bus KBC + PM Host I/F RTC + Processing Unit HBI Host Bus APC Host Config RAM Memory External BIU CR16A Core 32.768 ICU HFCG PMC ADC KBSCAN ACB GPIO WDG Peripherals Legacy ROM MIWU IBM®, PC-AT® and PS/2® are registered trademarks of International Business Machines Corporation. CompactRISCTM, WATCHDOGTM and TRI-STATE® are trademarks of National Semiconductor Corporation. ACCESS.bus® is a registered trademark of Digital Equipment Corporation. I2C® is a registered trademark of Philips. Memory (ISA Compatible) MFT16 Timer + KHz Adapter PS/2 I/F I/F CLK DAC + I/O (X2) |
类似零件编号 - PC87570-ICC/VUL |
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类似说明 - PC87570-ICC/VUL |
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