9 Feb 2010 0:56:53
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 Acqura now have Philips microcontrollers available for sale. If you need P89C668, P89C669, LPC76x or LPC900 family devices, check out our low MOQ's
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Take a look at our new forums. If you have a question about the 8xC51, LPC900, or MX families (or any 8051-related query) then ask your question here.
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| User rusk has posted this comment in the I/O Forum |
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| unreliable input pin function on P87C51RD2 |
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We have a product based on a Philips 87C51RD2 on which one of the I/O pins seems to be unreliable. The pin provides an input from an external switch and there is a 4k7 resistor between the input pin and the switch connector to improve ESD resistance.
We have found that a small but significant proportion of production units fail to recognise switch closures reliably, and there is some evidence that the problem is worse at low temperatures, and may be worse for some batches of microcontrollers than others.
Does anyone have any idea of what might be causing this ?
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| Click here to see the whole discussion thread. |
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PPA900-TSSOP14 |
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PDS900 programming adapter for P89LPC91x devices in TSSOP14 Packages |
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The PPA900-TSSOP14 is an optional package adaptor for use with the PDS900 device programmer for the Philips P89LPC900 family of microcontrollers.
It plugs onto the PDS900 programmer and allows devices in the TSSOP14 surface-mount package to be programmed.
Note: This programming adaptor is specific to the PDS900 - it should not be assumed that it can be used with any other programmer for the Philips P89LPC900 family devices.
Click here for a comprehensive selection guide showing which emulation and programming system and associated emulation and programming adaptors you will require for all of the LPC900 family devices.
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