AT90ADCPOD Configuration
AVR
®
ATICE10 User Guide
4-5
Long leads from your external crystal to the oscillator circuit on the pod may cause prob-
lems. It is possible to mount a crystal in the socket near J103. Do not use the 2-lead
cable if you choose this option. If the crystal frequency is above 1 MHz and this is
selected in the Clock Range menu in Emulator Options in AVR Studio, S101 should be
in position ON. S101 should be in position OFF under all other circumstances.
Please note that a crystal cannot be used when emulating AT90S2343 or ATtiny22.
4.4.1
The Timer Oscillator
This section only applies to emulation of S4434 and S8535.
A 32.768 kHz crystal is mounted on the pod for use with the Timer oscillator. It is impos-
sible to emulate the Timer oscillator with a crystal in the target application due to the
long leads from the target application to the oscillator circuit. If an external oscillator out-
put is used as the clock source of the Timer oscillator, mount jumper J104, otherwise
leave it open.
4.5
The Analog
Comparator
The jumpers labeled S0 and S1, must be set correctly to make the analog comparator
work properly. Table 4-6 shows how to set these jumpers.
Note:
The jumper settings does not affect devices without Analog Comparator.
4.5.1
Connectors not
Described in this
User Guide
The 6-pin header connector is used for production testing.
Table 4-5.
Settings for J101
Clock source
Jumper Setting
Crystal
(OFF)
Oscillator
(ON)
Table 4-6.
Jumper Settings to Enable Analog Comparator
Device
S1/J105
S0/J106
ATtiny11, ATtiny12, ATtiny28, S1200, and S2313
(ON)
(ON)
S2333 and S4433
(ON)
(OFF)
S4414, S4434, S8515, and S8535
(OFF)
(ON)
