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PC87591L Fiches technique(PDF) 1 Page - National Semiconductor (TI) |
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PC87591L Fiches technique(HTML) 1 Page - National Semiconductor (TI) |
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1 / 437 page  © 2004 National Semiconductor Corporation www.national.com PRELIMINARY March 2004 Revision 1.07 PC87591E, PC87591S and PC87591L LPC Mobile Embedded Controllers General Description The National Semiconductor PC87591E, PC87591S and PC87591L are highly integrated, embedded controllers with an embedded-RISC core and integrated advanced func- tions. These devices are targeted for a wide range of porta- ble applications that use the Low Pin Count (LPC) interface. The PC87591S is targeted for security applications and in- cludes supporting hardware such as the Hardware Random Number Generator. The PC8591L replaces the on-chip flash with 4K of boot ROM for value solutions using shared BIOS architecture. “PC87591x” refers to all the devices. The PC87591x incorporates National’s CompactRISC CR16B core (a high-performance 16-bit RISC processor), on-chip flash (ROM for the PC87591L) and RAM memories, system support functions and a Bus Interface Unit (BIU) that directly interfaces with optional external memory (such as flash) and I/O devices. System support functions include: WATCHDOG and other timers, interrupt control, general-purpose I/O (GPIO) with internal keyboard matrix scanning, PS/2® Interface, ACCESS.bus® interface, high accuracy analog-to-digital (ADC) and digital-to-analog converters (DAC) for battery charging, system control, system health monitoring and an- alog controls. The PC87591x interfaces with the host via an LPC interface that provides the host with access to the Keyboard and em- bedded controller interface channels, integrated functions, Real-Time Clock (RTC), BIOS firmware and security func- tions. Like members of National’s SuperI/O family, the PC87591x is PC01 and ACPI compliant. Outstanding Features ■ Host interface, based on Intel’s LPC Interface Specifi- cation Revision 1.0, September 29th, 1997 ■ PC01 Rev 1.0, and ACPI 2.0 compliant ■ 16-bit RISC core, with 2 Mbyte address space, and running at up to 20 MHz ■ Software and Hardware controlled clock throttling ■ Shared BIOS flash memory (internal and/or external) ■ Y2K-compliant RTC ■ 84/117 GPIO ports (for 128-pin/176-pin packages) with a variety of wake-up events ■ Extremely low current consumption in Idle mode ■ JTAG-based debugger interface ■ 128-pin and 176-pin options, in LQFP package (PC87591L is 176-pin only) Block Diagram Core Bus Peripheral Bus Bus KBC + PM Host I/F RTC Processing Unit RAM External BIU CR16B Core 32.768 KHz ICU HFCG PMC ADC ACB GPIO WDG FLASH or ROM MIWU Memory + I/O MFT16 Timer + Adapter PS/2 I/F (X2) CLK DAC (X2) Memory Debugger I/F Shared mem. + Security LPC I/F Serial IRQ SMI Functions Internal Bus CR Access DMA JTAG KBSCAN + ACM USART Peripherals LPC Bus I/F I/F Functions PWM Reset & Config MSWC Bridge Controlled Host National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brand or product names are trademarks or registered trademarks of their respective holders. |
Numéro de pièce similaire - PC87591L |
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Description similaire - PC87591L |
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