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PC87591E-VLB |PC87591EVLBNSCN/a127avaiLPC Mobile Embedded Controllers [Life-time buy]
PC87591E-VPC |PC87591EVPCNSCN/a2900avaiLPC Mobile Embedded Controllers [Life-time buy]
PC87591E-VPCI01 |PC87591EVPCI01NSC ?N/a8avaiLPC Mobile Embedded Controllers [Life-time buy]
PC87591L-VPCN01 |PC87591LVPCN01NSCN/a2800avaiLPC Mobile Embedded Controllers [Life-time buy]
PC87591S-VPC |PC87591SVPCNSCN/a30avaiLPC Mobile Embedded Controllers [Life-time buy]
PC87591S-VPCI00 |PC87591SVPCI00NSCN/a6600avaiLPC Mobile Embedded Controllers [Life-time buy]


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PC87591E-VLB-PC87591E-VPC-PC87591E-VPCI01-PC87591L-VPCN01-PC87591S-VPC-PC87591S-VPCI00
LPC Mobile Embedded Controllers [Life-time buy]
PC87591E, PC87591S and PC87591L LPC Mobile Embedded Controllers
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 embedded-RISC core and integrated advanced func-
tions. These devices are targetedfora wide rangeof porta-
ble applications that usethe Low Pin Count (LPC) interface.
The PC87591Sis targetedfor security applications andin-
cludes supporting hardware suchasthe Hardware Random
Number Generator. The PC8591L replaces the on-chip
flash with4Kof boot ROMfor 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 (ROMfor the PC87591L) and RAMmemories,
system support functions and aBus Interface Unit (BIU)that
directly interfaces with optional external memory (suchas
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 withthe hostviaan LPC interface
that provides the host with accessto the Keyboard and em-
bedded controller interface channels, integrated functions,
Real-Time Clock (RTC), BIOS firmware and security func-
tions.
Like membersof National’s SuperI/O family, the PC87591x
is PC01 and ACPI compliant.
Outstanding Features
Host interface, basedon 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, with2 Mbyte address space, and
runningatupto20 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)
witha varietyof wake-up events Extremely low current consumptionin Idle mode JTAG-based debugger interface 128-pin and 176-pin options, package
(PC87591Lis 176-pin only)
Block Diagram
Core Bus
Peripheral Bus

Bus
KBC + PMHost I/F
RTC
Processing
Unit

RAM
BIU
CR16B Core
ICUHFCG
PMC
ADCACBGPIO WDG
FLASH or ROM
MIWU
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
KBSCAN +
ACM USART
Peripherals

LPC Bus I/F
I/F Functions

PWM
Reset &
Config
MSWC
Bridge
Controlled
Host
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