Technical specifications Secondary processor specifications
XBee®-PRO 900HP/XSC RF Modules
19
GPIO electrical specification Value
Voltage - supply 2.1 - 3.6 V (3.0 V or higher required for optimal performance)
Low Schmitt switching threshold 0.3 x V
DD
High Schmitt switching threshold 0.7 x V
DD
Input pull-up resistor value 40 kΩ
Input pull-down resistor value 40 kΩ
Output voltage for logic 0 0.05 x V
DD
Output voltage for logic 1 0.95 x V
DD
Output source current 2 mA
Output sink current 2 mA
Total output current (for GPIO pins) 48 mA
Note For information about Mexico IFETEL, see Mexico IFETEL. Only the XBee-PRO 900HP devices
listed are approved by IFETEL.
Secondary processor specifications
If the device has the programmable secondary processor, add the values from the following tables to
the specifications listed in the Power requirements specifications. For more information about
transmit, receive, and sleep currents, see Power requirements.
For example, if the secondary processor runs at 20 MHz and the primary processor is in receive mode,
then the new current value is:
I
total
= I
r2
+ I
rx
= 14 mA + 9 mA = 23 mA
where I
r2
is the runtime current of the secondary processor and I
rx
is the receive current of the
primary processor.
Optional secondary processor specification
Add these numbers to power requirement
specifications
(add to RX, TX, and sleep currents
depending on mode of operation)
Runtime current for 32 k running at 20 MHz +14 mA
Runtime current for 32 k running at 1 MHz +1 mA
Sleep current +0.5µ A typical
For additional specifications see the NXP datasheet
and manual
MC9S08QE32
Voltage requirement for secondary processor to
operate at maximum clock frequency
2.4 to 3.6 VDC
To Next Page
Loading...
Need help?
General
