Shou Member VAPS Joined Jul 22, 2008 Messages 548 Reaction score 13 Location Roppongi Hills, Tokyo, Japan Jun 5, 2011 #1 Looking for a 28 pin EPROM that has 1M capacity like the TC531000 mask ROM.
Womble Well-known member Joined Oct 12, 2009 Messages 1,078 Reaction score 84 Location Vic, Australia Jun 5, 2011 #2 There isnt one, however the closest EPROM is the 27c010 so you would need to make a simple adaptor to use one. Yes it is more legs but take a look at what the extra ones are, you only need to move 2 pins.
There isnt one, however the closest EPROM is the 27c010 so you would need to make a simple adaptor to use one. Yes it is more legs but take a look at what the extra ones are, you only need to move 2 pins.
channelmanic Well-known member Donor 3 years: 2011-2013 VAPS Joined Apr 5, 2008 Messages 17,110 Reaction score 1,093 Location Texas Jun 6, 2011 #3 Actually there is one... The non-JEDEC pin 1Mb EPROM (HN27C301, for example) is pin for pin compatible with the mask ROM for 27 of the 28 pins of that mask ROM. The power connection is different and there's an extra enable line that must be grounded on the EPROM. Pull up the data sheets on http://www.datasheetarchive.com and take a look. RJ
Actually there is one... The non-JEDEC pin 1Mb EPROM (HN27C301, for example) is pin for pin compatible with the mask ROM for 27 of the 28 pins of that mask ROM. The power connection is different and there's an extra enable line that must be grounded on the EPROM. Pull up the data sheets on http://www.datasheetarchive.com and take a look. RJ