pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet
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pc87591l-n05
Manufacturer Part Number
pc87591l-n05
Description
Lpc Mobile Embedded Controller
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L-N05.pdf
(401 pages)
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© 2004 National Semiconductor Corporation
PC87591L-N05
LPC Mobile Embedded Controller
General Description
The National Semiconductor PC87591L-N05 is a highly in-
tegrated embedded controller with an embedded RISC core
and integrated advanced functions. This device is targeted
for a wide range of portable applications that use the Low
Pin Count (LPC) interface.
In this datasheet, references to the PC87591L-N05 include
the PC87591L-VPCN05 and PC87591L-SLCN05.
The PC87591L-N05 incorporates the National CompactRISC
CR16B core (a high-performance 16-bit RISC processor),
on-chip ROM and RAM memories, system support func-
tions and a Bus Interface Unit (BIU) that directly interfaces
with external memory (such as flash) and I/O devices.
System support functions include: watchdog, PWM, timers,
interrupt control, General-Purpose I/O (GPIO) with internal
keyboard matrix scanning, PS/2
interface and high-accuracy analog-to-digital (ADC) and
digital-to-analog (DAC) converters for battery charging, sys-
tem control, system health monitoring and analog controls.
The PC87591L-N05 interfaces with the host via an LPC inter-
face that provides the host with access to the following: Key-
board and embedded controller interface channels, integrated
functions, Real-Time Clock (RTC) and BIOS firmware.
Block Diagram
National Semiconductor and TRI-STATE are registered trademarks of National Semiconductor Corporation.
All other brand or product names are trademarks or registered trademarks of their respective holders.
Host
Controlled
Functions
Internal Bus
LPC
KBC + PM
I/F
Host I/F
LPC Bus I/F
Serial
IRQ
32.768 KHz
®
MSWC
RTC
Interface, ACCESS.bus
SMI
CR Access
CLK
HFCG
Bridge
Core Bus
I/F Functions
Reset &
PMC
Config
Peripheral Bus
ICU
Shared mem.
+ Protection
MIWU
®
CR16B Core
KBSCAN +
ACM
Like other members of the National SuperI/O family, the
PC87591L-N05 is PC01 and ACPI compliant.
Outstanding Features
Debugger
Adapter
JTAG
Bus
Host interface, based on Intel’s LPC Interface
Specification Revision 1.1, August 2002
PC01 Rev 1.0, and ACPI 2.0 compliant
16-bit RISC core, with 2 Mbytes address space,
running at up to 20 MHz
JTAG-based debugger interface
Shared BIOS flash memory (external)
92 GPIO ports (including keyboard scanning) with a
variety of wake-up events
Software- and hardware-controlled clock throttling, and
extremely low current consumption in Idle mode
176-pin LQFP and FBGA packages
I/F
GPIO
Processing
PS/2
RAM
I/F
Unit
ACB
Memory
(X4)
MFT16
(X2)
Timer +
WDG
ROM
Peripherals
PWM
ADC
DAC
PRELIMINARY
DMA
USART
(X2)
Memory + I/O
External
BIU
Revision 1.2
April 2004
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