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87332 / PC87332 / PC87332VLJ / national qfp ic
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PC87332VLJ National $15.50 each The following spec sheet is provided by National and may cover several different versions and/or products. This listing is only for the item pictured and listed in the heading.
PC87332VLJ (3.3V/5V) and PC87332VLJ-5 (5V) (SuperI/O
TM III Premium Green) Floppy Disk Controller, Dual UARTs, IEEE1284 Parallel Port, and IDE Interface
The PC87332VLJ and PC87332VLJ-5 are single chip solutions for most commonly used I/O peripherals in ISA, EISA and MicroChannel
É based computers. It incorporates a Floppy Disk Controller (FDC), two full featured UARTs, an IEEE 1284 compatible parallel port and all the necessary control logic for an IDE interface. Standard PC-ATÉ address decoding for all the peripherals and a set of configuration registers are also implemented in this highly integrated member of the SuperI/O family. Advanced power management features and mixed voltage operation in the VLJ version make the PC87332 chips an ideal for low-power and/or portable personal computer applications.
The PC87332 FDC uses a high performance digital data separator eliminating the need for any external filter components. It is fully compatible with the PC8477 and incorporates a superset of DP8473, NEC
mPD765 and N82077 floppy disk controller functions. All popular 5.25× and 3.5× floppy drives, including the 2.88 MB 3.5× floppy drive, are supported.
In addition, automatic media sense and 2 Mbps tape drive support are provided by the FDC. The two UARTs are fully NS16450 and NS16550 compatible. Both ports support MIDI baud rates. (Continued)
* Software compatible with the DP8473, the 765A and the N82077
* 16-byte FIFO (disabled by default)
* Perpendicular Recording drive support
* New high-performance internal digital data separator (no external filter components required)
* Low-power CMOS with enhanced power-down mode
* Automatic media-sense support
* Supports fast 2 Mbps and standard 1 Mbps/ 500 kbps/250 kbps tape drives
* Enhanced Parallel Port (EPP) compatible
* Extended Capabilities Port (ECP) compatible, including level 2 support
* Ability to multiplex FDC signals on parallel port pins allows use of an external Floppy Disk Drive (FDD)
* Includes protection circuit to prevent damage to the parallel port when a connected printer is powered up or is operated at a higher voltage
