plasmo wrote:
The pin assignments are close enough to a EPROM to place under the EPROM resulting in a smaller board, and short fast connections. At 50 cents, just solder the part directly to the pc board; EPROM is always socketed anyway so that takes no additional vertical space.
Bill
Worth noting? The pinout for a 28C256 EEPROM is the same as that for a 32K RAM chip. If you separate the active lo chip enable pins it's relatively easy to 'stack' RAM & ROM to significantly reduce wiring or routing. For example, on a solderless breadboard project I used a 14-pin SIP machined pin header with the /CE pin cut off and a wire soldered onto the shoulder of that header pin in order to separate the /CE pins. The EEPROM is selected with the wire while the RAM is selected via the solderless breadboard connection.