pc87591l National Semiconductor Corporation, pc87591l Datasheet

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pc87591l

Manufacturer Part Number

pc87591l

Description

Lpc Mobile Embedded Controllers

Manufacturer

National Semiconductor Corporation

Datasheet

1.PC87591L.pdf (437 pages)

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© 2004 National Semiconductor Corporation

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

ACCESS.bus

(ADC) and digital-to-analog converters (DAC) for battery

charging, system control, system health monitoring and an-

alog controls.

Block Diagram

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.

Host

Controlled

Functions

®

interface, high accuracy analog-to-digital

Internal Bus

LPC

KBC + PM

I/F

Host I/F

LPC Bus I/F

Serial

IRQ

32.768 KHz

MSWC

RTC

SMI

CR Access

HFCG

Bridge

Core Bus

®

I/F Functions

PMC

Reset &

Config

Interface,

Peripheral Bus

CLK

ICU

Shared mem.

+ Security

MIWU

CR16B Core

KBSCAN +

ACM

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

Debugger

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)

Adapter

JTAG

Bus

I/F

GPIO

Processing

PS/2

RAM

I/F

Unit

Memory

ACB

(X2)

MFT16

FLASH or ROM

(X2)

Timer +

WDG

Peripherals

PWM

ADC

PRELIMINARY

DAC

DMA

USART

BIU

Memory + I/O

Revision 1.07

External

March 2004

www.national.com

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