AT86RF211SAHW Atmel, AT86RF211SAHW Datasheet - Page 5
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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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3.5
3.6
e2v semiconductors SAS 2008
Synchronous Receive Modes
Wake-up Mode
In addition to the modes described above, the AT86RF211S provides a clock signal that facilitates
recovery of data by any low-cost MCU (no UART controller, for instance).
The data can also be synchronized on this clock signal; the benefits of this are:
Figure 3-3.
The chip is set-up in a special Rx mode called sleep mode. The chip wakes up periodically thanks to its
internal timer (in a stand-alone procedure, the microcontroller is in power-down mode), and waits for an
expected message defined previously. If no correct sequence is received, the periodic scan continues.
If a correct message is detected, its data field is stored into the AT86RF211S (up to 32 bits) and an inter-
rupt is generated on the WAKEUP pin.
Please refer to
• Bit decision is done on-chip
• Jitter is removed
• Processing time constraints on the MCU are eliminated
Companion Microcontroller
Synchronous Receive Mode
Figure 3-3 on page
SLE, SCK, SDATA
(for set-up)
DATACLK
DATAMSG
5.
3
DATACLK
DATAMSG
AT86RF211S also acts like a "pipe":
data (collected by the antenna)
is available on pin DATAMSG:
AT86RF211S
F = Frequency of
Received Signal
Receive Mode
0894C–WIRE–11/08
AT86RF211S
5
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