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MCB-STR9-v2.0 schematic correct?

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Author
David Perry
Posted
10-Jul-2006 08:46
Toolset
ARM
New! MCB-STR9-v2.0 schematic correct?
Port pin P3.6 is connected to both switch S3 and rx data for Com1. Also, no UART alternate functions are listed in the STR91xF datasheet for P3.6.

Is this correct? I have one of these boards on order and I'm planning to connect some additional prototype circuitry to it.

Thanks
Dave
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Author
Scott Chandler
Posted
10-Jul-2006 16:00
Toolset
ARM
New! RE: MCB-STR9-v2.0 schematic correct?
I have one of these boards sitting in front of me and I can tell you that yes P3.6 is connected to both S3 and to pin 12 of the 232 translator.
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Author
Hans Schneebauer
Posted
11-Jul-2006 02:53
Toolset
ARM
New! RE: MCB-STR9-v2.0 schematic correct?
You are right, this was a mistake in version 2 of the MCBSTR9 PCB. Unfortunately, the COM1 interface cannot be used on this board because of this (see also http://www.keil.com/support/docs/3211.htm).

A few days ago we started to ship version 3 boards. The version 3 schematics will soon be published at http://www.keil.com/mcbstr9/

The differences between version 2 and version 3 are:
- COM1 is now connected to P3.0 and P3.1 instead of P3.6 and P3.7.
- P3.6 is now only connected to pushbutton S3.
- P3.7 is now only connected to jumper J3

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