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29f160 wiring help

Posted: Sat Oct 06, 2018 3:36 am
by GalacticScum
  • Hi, i've desoldered few 29f160 flash eeproms in tsop48 package and i want to do an adapter pcb for Snes. Is there any diagram showing which lines do i need exacly...? Or can anybody tell me how to wire it up propertly for 1 to 1 replacement? And what to do with unused address lines... Leave them unconnected or solder to gnd?

Re: 29f160 wiring help

Posted: Sat Oct 06, 2018 6:31 am
by tepples
Ground the unused address lines.

Unused inputs should always be connected to something unless the datasheet specifies that an input is internally pulled up or down. And I haven't heard of a commodity flash memory with pullups or pulldowns on its address lines.

Re: 29f160 wiring help

Posted: Sat Oct 06, 2018 11:10 am
by GalacticScum
Ok, ty... At that moment i've got :29L323DT 32mbit (4Mx8/2Mx16),29F160BE 16mbit (2Mx8/1Mx16) and 29LV800CT 8mbit (1Mx8/512Kx16) all TSOP48. How to write the game... Can i Just write it in one chunk or have to split and use multiplexer?

Re: 29f160 wiring help

Posted: Sat Oct 06, 2018 11:35 am
by lidnariq
Look at the datasheet, if it can run in 8-bit mode, you don't need a multiplexer.

HOWEVER. The letter "L" indicates a 3V part. Do not use one in your (or anyone else's) SNES without adding additional protection parts, 3V ROMs will damage the console and/or be damaged by it.