PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 2

• Manufacturer Part Number: PC87307VUL
• Description: PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
• Manufacturer: National Semiconductor

www.national.com
A special Plug and Play (PnP) module that includes:
— Flexible IRQs, DMAs and base addresses that meet
— Plug and Play ISA mode (with isolation mechanism
— Motherboard Plug and Play mode
A Floppy Disk Controller (FDC) that provides:
— A modifiable address that is referenced by a 16-bit
— Software compatibility with the PC8477, which con-
— 13 IRQ channel options
— Four 8-bit DMA channel options
— 16-byte FIFO
— Burst and non-burst modes
— A high-performance, internal, digital data separator
— Support for standard 5.25" and 3.5" floppy disk
— Automatic media sense support
— Perpendicular recording drive support
— Three-mode Floppy Disk Drive (FDD) support
— Full support for the IBM Tape Drive Register (TDR)
A Keyboard and mouse Controller (KBC) with:
— A modifiable address that is referenced by a 16-bit
— 13 IRQ options for the keyboard controller
— 13 IRQ options for the mouse controller
— An 8-bit microcontroller
— Software compatibility with the 8042AH and
— 2 KB of custom-designed program ROM
— 256 bytes of RAM for data
— Five programmable dedicated open drain I/O lines
— Asynchronous access to two data registers and one
— Support for both interrupt and polling
— 93 instructions
— An 8-bit timer/counter
— Support for binary and BCD arithmetic
— Operation at 8 MHz,12 MHz or 16 MHz (programma-
— Can be customized using the PC87323VUL, which
A Real-Time Clock (RTC) that has:
— A modifiable address that is referenced by a 16-bit
— 13 IRQ options, with programmable polarity
— DS1287, MC146818 and PC87911 compatibility
the Plug and Play requirements specified by Mi-
crosoft
Windows
– Wait for Key state)
programmable register
tains a superset of the floppy disk controller func-
tions in the DP8473, the NEC PD765A and the
N82077
that does not require any external filter components
drives
implementation of AT and PS/2 drive types
programmable register, reported as a fixed address
in resource data
PC87911 microcontrollers
for keyboard controller applications
status register during normal operation
ble option)
includes a RAM-based KBC, as a development plat-
form for keyboard controller code
programmable register
®
®
in their 1995 hardware design guide for
and Plug and Play ISA Revision 1.0A
Highlights
2
— 242 bytes of battery backed up CMOS RAM in two
— Selective lock mechanism for the RTC RAM
— Battery backed up century calendar in days, days of
— Battery backed-up time of day in seconds, minutes
— BCD or binary format for time keeping
— Three different maskable interrupt flags:
— Separate battery pin, 2.4 V operation that includes
— 2 A maximum power consumption during power
— Double-buffer time registers
An Advanced Power supply Control (APC) that controls
the main power supply to the system, using open-drain
output, as follows:
Power turned on when:
— The RTC reaches a pre-determined date and time.
— A high to low transition occurs on the RI input signals
— A ring pulse or pulse train is detected on the RING
— A SWITCH input signal indicates a Switch On event
Powered turned off when:
— A SWITCH input signal indicates a Switch Off event
— A Fail-safe event occurs (power-save mode detect-
— Software turns power off.
Two UARTs that provide:
— Software compatibility with the 16550A and the
— A modifiable address that is referenced by a 16-bit
— 13 IRQ channel options
— Shadow register support for write-only bits
— Four 8-bit DMA options for the UART with Infrared
An enhanced UART and Infrared (IR) interface on the
UART2 that supports:
— UART data rates up to 1.5 Mbaud
— IrDA 1.0 SIR
— ASK-IR option of SHARP-IR
— DASK-IR option of SHARP-IR
— Consumer-IR (TV-Remote) circuitry
— A Plug and Play compatible external transceiver
A bidirectional parallel port that includes:
— A modifiable address that is referenced by a 16-bit
banks
the week, months and years, with automatic leap-
year adjustment
and hours that allows a 12 or 24 hour format and ad-
justments for daylight savings time
•
•
•
an internal UL protection resistor
down
of the UARTs.
input signal.
ed but the system is hung up).
16450
programmable register
support (UART2)
programmable register
Periodic interrupts - At intervals from 122 msec
to 500 msec
Time-of-day alarm - At intervals from once per
second to once per day
Updated Ended Interrupt - Once per second
upon completion of update