29f160 wiring help

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GalacticScum
Posts: 7
Joined: Sat Apr 15, 2017 10:08 am

29f160 wiring help

Post by GalacticScum » Sat Oct 06, 2018 3:36 am

  • 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?

tepples
Posts: 21720
Joined: Sun Sep 19, 2004 11:12 pm
Location: NE Indiana, USA (NTSC)
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Re: 29f160 wiring help

Post by tepples » Sat Oct 06, 2018 6:31 am

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.

GalacticScum
Posts: 7
Joined: Sat Apr 15, 2017 10:08 am

Re: 29f160 wiring help

Post by GalacticScum » Sat Oct 06, 2018 11:10 am

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?

lidnariq
Posts: 8707
Joined: Sun Apr 13, 2008 11:12 am
Location: Seattle

Re: 29f160 wiring help

Post by lidnariq » Sat Oct 06, 2018 11:35 am

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.

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