AT91SAM9263-EK Evaluation Board User Guide
7-1
6325D–ATARM–26-Aug-09
Section 7
Errata
7.1
JTAGSEL S1 Footprint Selector
The S1 footprint must never be shorted to select a JTAG mode, else the chip can be damaged.
By default, the JTAGSEL input pin integrates a pull-down resistor (ICE mode). To select the JTAG mode,
connect the JTAGSEL input pin to VDDBU power.
7.2
PIO Usage
PC20 and PC21 are not routed on the PCB. As a result, these signals are inaccessible.
7.3
TWI Line Pull-Ups for Fast Mode Operation
In order to use the TWI in Fast Mode (up to 400 Kbits/s), the default 10 K
Ω
resistors R43 and R44 should
be replaced by smaller values (e.g., 2.2 K
Ω
).
Note that there is no need to change the pull-up resistors if the TWI is used in Standard Mode (up to
100 Kbits/s).
