AT91SAM9RL-EK Atmel, AT91SAM9RL-EK Datasheet - Page 35

• Manufacturer Part Number: AT91SAM9RL-EK
• Description: KIT EVAL FOR AT91SAM9RL
• Manufacturer: Atmel
• Type: MCUr

Specifications of AT91SAM9RL-EK

• Contents: Evaluation Board, Power Supply with adapters, Battery backup, Cables and software
• Processor To Be Evaluated: AT91SAM9RL64
• Data Bus Width: 8 bit, 32 bit
• Interface Type: EBI, SDRAM
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• Kit Contents: Board Cable Power Supply CD
• Supported Devices: AT91SAM9RL ARM926EJ-S
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Development Tool Type: Hardware - Eval/Demo Board
• Rohs Compliant: Yes
• Mcu Supported Families: AT91SAM
• For Use With/related Products: AT91SAM9RL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6.1
6.2
AT91SAM9RL-EK Evaluation Board User Guide
Pull-up Resistor on the Wrong Pin
VDDCORE Power Consumption Measurement Impossible
The RTCK pin (connector J4, pin 11), which is an input, has a pull-up resistor whereas the TCK pin (con-
nector J4, pin 9), which is an output, has not.
The user may observe a possible increase in the power consumption on VDDIO (a few micro-amps) but
it does not prevent the JTAG-ICE interface to work correctly on this board.
Correct schematics would have a pull-up on the TCK pin to tie the CMOS input to a known level, in order
to avoid a possible pad oscillation and a possible increase in power consumption.
If the AT91SAM9RL64 device is an engineering sample (ES), VDDCORE power consumption measure-
ment is impossible on J10 Jumper.
None.
Problem Fix/Workaround
Problem Fix/Workaround
6325C–ATARM–22-Jul-10
Section 6
Errata
6-1