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Automation FAQ Sponsored by Creative Control Concepts |
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 Home Automation FAQ : HA Equipment : Creative Control Concepts/HCS-II : HCS-II Supervisory Controller :
Can I install and use a 93C46 EEPROM in U6? |
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NO
U6 is not necessary in a normal HCS2-DX installation. The RAM is battery backed anyway so data is preserved during a powerloss. Also, the CPU pin necessary to clock the EEPROM is used for one of the serial ports.
XPRESS has no support for this chip either.
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| So the obvious question is why is it there? Well, at one time I think the original designer thought it might be useful. However, since the RAM is battery backed anyway - it seems redundant.
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My HCS-II stopped working after a bad thunder storm!
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