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Integrated Circuits

27256

M27256
NMOS 256 Kbit (32Kb x 8) UV EPROM

 FAST ACCESS TIME: 170ns
 EXTENDED TEMPERATURE RANGE
 SINGLE 5V SUPPLY VOLTAGE
 LOW STANDBY CURRENT: 40mA m
 TTL COMPATIBLE DURING READ a PROGRAM
 FAST PROGRAMMING ALGORITHM
 ELECTRONIC SIGNATURE
 PROGRAMMING VOLTAGE: 12V

D e s c r i p t  i o n :

The M27256 is a 262,144 bit UV erasable and electrically programmable memory EPROM. It is organized as 32.768 words by 8 bits. The M27256 is housed in a 28 pin Window Ceramic Frit-Seal Dual-in-Line package. The transparent lid allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure.

logic diagram:

m27256 logic diagram 732.jpg

Pin Connection diagram

m27256 pin connection diagram 5b2.jpg

 


Keywords : 27256
Writer : delon  |
5 Mar 2011 Sat   
|  6.137 Views
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