User Manual
Version 1.2
2017-12-10
ConBee
– USB Dongle
www.dresden-elektronik.de
Page 28 of 33
footprint is SO-8. We recommend the use of a Serial Flash Memory like M25P40-VMN6TPB
by MICRON. It is useful to place a stabilizing capacitor of 100nF to the 0402 footprint next to
the memory.
The signal pin description can be found in
Section 8
Table 10
.
Figure 5: USB Dongle Serial Flash Memory position (default not assembled)
8.4.
Assemble the User button
The USB Dongle offers the use of an external user button. We recommend the use of the
SMT button KSR211GLFS by ITT or similar items. The button is connected with ground and
signal PB7.
The signal pin description can be found in
Section 8
Table 10Table 11
.
Figure 6: USB Dongle user button position (default not assembled)
8.5.
Assemble the status LEDs
The USB Dongle offers the use of two status LEDs. The first LED is connected with signal
PD7 and the second LED is connected with signal PG2. Each LED needs one additional
series resistor with a value of 820 Ohms. Both LEDs are low-active. We recommend the use
of the following LEDs and resistors:
Red low current LED: TLMS1000-GS08 by Vishay (SMT package 0603)
Serial Flash Memory footprint
1
Stabilizing capacitor
User button footprint
PB7
GND
