CRE401: Difference between revisions

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SIL capacitor and resistor array used in NeoGeo systems, especially for protection of input ports and auxiliary circuits ([[MV-LED]]). Also found as "CR10-A-*" in late [[NEO-CDD boards]]. Drop-in replacements seem hard to find but using simple 1/4W 330 ohms resistors seem to be a good quick fix.
[[File:CR10-A.jpg|right|thumb|CR10-A found in a MV4FS.]]


They are 4 identical RC circuits with a pull-up resistor.
Serial-In-Line capacitor and resistor array used on NeoGeo boards, to protect input ports and auxiliary circuits ([[MV-LED]]). Also found as "CR10-A-*" on late [[NEO-CDD boards]]. Drop-in replacements seem hard to find but using common 1/4W resistors seems to be enough for a quick fix.
 
They are composed of 4 identical circuits. The leftmost pin's net pulls all outputs through 1k resistors. The 330 ohm resistors provide current protection (sometimes as fuses), the capacitors smooth out eventual spikes.


[[File:Cre401.png]]
[[File:Cre401.png]]


[[http://www.bitechnologies.com/pdfs/cr.pdf Original manufacturer datasheet ("-A Circuit")]]
Datasheet: [[File:Cr.pdf|Cr.pdf]] ("-A Circuit")


[[Category:Chips]]
[[Category:Chips]]
[[Category:Repairs]]

Latest revision as of 20:48, 17 May 2020

CR10-A found in a MV4FS.

Serial-In-Line capacitor and resistor array used on NeoGeo boards, to protect input ports and auxiliary circuits (MV-LED). Also found as "CR10-A-*" on late NEO-CDD boards. Drop-in replacements seem hard to find but using common 1/4W resistors seems to be enough for a quick fix.

They are composed of 4 identical circuits. The leftmost pin's net pulls all outputs through 1k resistors. The 330 ohm resistors provide current protection (sometimes as fuses), the capacitors smooth out eventual spikes.

File:Cre401.png

Datasheet: File:Cr.pdf ("-A Circuit")