AT86RF211DB-868LT Atmel, AT86RF211DB-868LT Datasheet
AT86RF211DB-868LT
Specifications of AT86RF211DB-868LT
AT86RF211DB868107
AT86RF211DB868107
AT86RF211DB868LT
Related parts for AT86RF211DB-868LT
AT86RF211DB-868LT Summary of contents
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... At the receiver side made easier by using: • • Before using another implementation make sure to con- tact Atmel’s FAE before. a data rate ≤ 10 kbps: the longer the bits, the easier. Since it is possible to wake-up a device at 10 kbps and to transfer the data at 64 kbps afterwards, and thanks to the wake-up time based on RSSI checking, the additional power consumption is totally negligible ...
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Principle of the Embedded Wake-up Procedure Reception mode Oscillator settling Sleep mode Sleep Mode = Very Low Power Mode AT86RF211 (TRX01) 2 The "peak" consumption in Receive (Rx) or Transmit (Tx) mode of any high-perfor- mances transceiver makes it necessary ...
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... WAKEUP bit of STATUS reg- ister is also set. As indicated before, Atmel suggests that the wake-up mode should be implemented with a very short WL1 ( make sure that PLL is locked & RSSI conversion com- pleted). This way: • ...
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Notes typical value that depends on the crystal's specifications (the user does not have to care about that: oscillator set- tling is automatically detected by AT86RF211). 2. Full correct message means: Header correct (mandatory) + ...
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... Since it is possible to wake-up a device at 10 kbps and to trans- fer data at 64 kbps afterwards (see above), and thanks to the wake-up time based on RSSI checking, the additional power consumption is negligible. Please contact Atmel’s FAE if application requires a higher data rate during the wake-up phase. ...
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Demodulated signal on DISCOUT pin AT86RF211 (TRX01) 6 Comparison level set on SKFILT pin Data Slicing Options Comparison level set by internal DAC (DSREF) DATAMSG + - Internal comparison mode: the signal is compared to a fixed level DATAMSG Signal ...
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... Loop Filter 2186A–WIRE–08/02 Atmel recommends: • The ''External'' Mode for the Data Slicer: since the demodulated signal is compared to its average value, stored into an external capacitor, the duty cycle remains naturally very close to 50% even if the external conditions (i.e. temperature) have changed between two wake-up timeslots, with no need for data slicer threshold re-adjustment ...
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... Use of RSSI Threshold and Hysteresis AT86RF211 (TRX01) 8 Atmel recommends using: • [( 3.3 kΩ 560 pF] if the maximum data rate of the application (wake-up phase + data transfer afterwards) does not exceed 10 kbps. • [( kΩ 100 pF] if the data rate during the data transfer exceeds 10 kbits/s. This filter also works well during the wake-up phase (< ...
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Clock Recovery of the Wake-up Error Detection 2186A–WIRE–08/02 This clock recovery process must not be confused with the clock recovery of the normal communication receive mode, giving an output clock on DATACLK pin. The wake-up clock recovery gives no output ...
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Message Format Expected Message's Format FIELD HEADER (1) Length 10 bits Value 1010100001b Set-up Processing of Header must be received data correct to go further Usage Mandatory Make sure to meet chapter “Practical Implementation” on page 5 requirements for data ...
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The received Data (if any) is stored into WUD register and available for the microcontroller. The read of this data deactivates the wake-up pin (as well as WAKEUP flag of STATUS register). Warning: the first data bit received (LSB bit: ...
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Set- Transceiver and Initialization of a "Sleep" Procedure Relevant Registers Procedure to Put a Transceiver to Sleep AT86RF211 (TRX01) 12 All wake-up parameters are set-up as wanted at the beginning of the application by writ- ing into the ...
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How to Wake-up (a) Distant Device(s)? General Rules Typical Applications Individual Addressing 2186A–WIRE–08/02 As indicated in chapter 1-2: • WL2 must be > message duration, to make sure to catch it • wake-up message duration must be > ...
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Group Addressing (no Data Field) AT86RF211 (TRX01 WUC: WUE = '1', DATA = '0', STOP = '0', DATL = '00000', ADD = '1', MSGTST = '0', WPER = '0 0110 0011', WL1 = '000 0001', WL2 = '010', ...
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Group Addressing (with Data Field) 2186A–WIRE–08/02 - WUA: ADD = '0000 0000 0000 0xxx xxx0' (6 bits in bold depending on the device), ADDL = yyyyy depends on the target devices to be reached: '0 0110' (individual), '0 0011' (whole ...
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Addressing by "Data rate" (individual or group) AT86RF211 (TRX01 WUC register: WUE = '1', DATA = '1', STOP = '0', DATAL = '01001', ADD = '1', MSGTST = '0', WPER = '001100011', WL1 = '0000001', WL2 = '011'. ...
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... The capacity of a battery is given in A.h that corresponds to an electric charge ( t measured with given discharges conditions (discharge current final voltage). Atmel assumes that in practical half of this value can be really used because of current constraints of the application (operating voltage > 2.4V, self discharge, T°...). Let's call Qb = Q/2 ...
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... Number of 4181 ms cycles = 4.7 10 sponding to 6 years ± 20% (± 1.2 year). • With a single transmitter, the chip must send the data each time (so every 4.2 s) With the same parameters, during each 4.2 s cycle Atmel has: – 8 ms: oscillator settling time, the consumption is 0.8 mA. – ...
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... No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ...