AT86RF211SAHW Atmel, AT86RF211SAHW Datasheet - Page 11
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AT86RF211SAHW
Manufacturer Part Number
AT86RF211SAHW
Description
Manufacturer
Atmel
Datasheet
1.AT86RF211SAHW.pdf
(64 pages)
Specifications of AT86RF211SAHW
Lead Free Status / Rohs Status
Compliant
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Table 4-1.
4.1.2
Figure 4-3.
e2v semiconductors SAS 2008
Reference Clock Frequency
10.245 MHz
Microcontroller Clocking Capability
XTO Frequencies
MCU Clocking Capability
Slow Clock
Internal
MCU
It is preferable to add a resistor (3.3 kΩ) between XTAL2 and GND. This decreases the settling time of
the XTO to typically 8 ms with an extra power consumption of only a few hundred µA. For applications in
which XTO is always active, we suggest that you remove this resistor to save battery life.
If an external frequency reference is used together with the AT86RF211S, it must be applied to pin 23
XTAL1. A coupling capacitor is recommended if the source is not DC-free qualified. Pin 24 XTAL2
should remain Not Connected.
The microcontroller can be provided with a calibrated clock, derived from the clock of the AT86RF211S,
at 10.245 MHz. Therefore, as detailed in
and CTRL1[0] is set to 1 to access the additional features.
Through internal buffers and multiplexers, the AT86RF211S can clock its companion controller. The fre-
quency fed to the microcontroller can be adjusted by programming the DTR[20:14] bits, thus activating a
set of dividers. This clock’s reference signal is available on the DIGOUT pin.
Refer to
“Control Logic” on page 33
SLE, SCK, SDATA for Setup
IF1 Frequency
10.7 MHz
3
can be spared
MCU crystal
Output DIGOUT
Buffered XTO
for more information.
“Control Logic” on page
Possible IF1 Bandwidth
Up to 380 kHz
AT86RF211S
1, 2, 4, 8
Divider
33, this feature is only activated once
Comments
Cheap ceramic filters available
at 10.7 MHz
10.245 MHz
0894C–WIRE–11/08
AT86RF211S
11
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