PC87591L,PC87591L,PC87591L-VPC,PC87591L-VPC

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PC87591L,PC87591L,PC87591L-VPC,PC87591L-VPC
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Description:
LPC Mobile Embedded Controllers
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NSC [ NATIONAL SEMICONDUCTOR ]
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PCJ-105D2M-WG

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PM100CLA120

PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1
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
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
LPC
I/F
Serial
IRQ
SMI
Reset &
Config
CR16B Core
Processing
Unit
DMA
Host
Controlled
Functions
LPC Bus I/F
Core Bus
I/F Functions
CR Access
Bridge
Shared mem.
+ Security
Memory
Bus
Adapter
RAM
FLASH or ROM
BIU
Internal Bus
Peripheral Bus
KBC + PM
Host I/F
HFCG
KBSCAN +
ACM
ACB
(X2)
Peripherals
Timer +
WDG
MFT16
(X2)
MSWC
ICU
GPIO
ADC
USART
PMC
CLK
MIWU
Debugger
I/F
PS/2
I/F
PWM
DAC
RTC
JTAG
External
Memory + I/O
32.768 KHz
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© 2004 National Semiconductor Corporation
www.national.com