AT86RF211SAHWR E2V, AT86RF211SAHWR Datasheet - Page 2

• Manufacturer Part Number: AT86RF211SAHWR
• Manufacturer: E2V

Specifications of AT86RF211SAHWR

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Modulation Type: FSK
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Compliant

2. Description
3. General Overview
3.1
3.1.1
3.1.2
2
List of New Features
0894C–WIRE–11/08
Data Rate
Low-current XTAL Running Mode
The AT86RF211S is a shrink version of the AT86RF211. In addition to cost reduction, the use of the lat-
est RF e2v process provides a high level of robustness and performance (high output power) and
significantly improves some technical features such as power consumption. The AT86RF211 is a fully
compatible product that can be directly replaced in production, without redesigning the hardware or soft-
ware. New features are also available through the software (activated by the ADDFEAT bit).
Like the AT86RF211, this is a single-chip transceiver dedicated to low-power wireless applications, opti-
mized for licence-free ISM band operations from 400 to 950 MHz. Its flexibility and unique level of
integration make it a natural choice for any system related to telemetry, remote controls, alarms, radio
modems, Automatic Meter Reading, hand-held terminals or high-tech games and appliances. The
AT86RF211S makes bidirectional communications affordable for applications such as secured transmis-
sions with hand-shake procedures, new features and services.
The AT86RF211S can easily be configured to provide the optimal solution for your application: choice of
external filters versus technical requirements (bandwidth, selectivity, immunity, range, etc), and software
protocol (single channel, frequency agility, listen before transit, FHSS). The AT86RF211S is also well
adapted to battery-operated systems, as it can be powered with as little as 2.4V. It also offers a wake-up
receiver feature to save power by alerting the associated microcontroller only when a valid inquiry is
detected.
The AT86RF211S is a microcontroller RF peripheral. The chip’s setup is done by writing or reading the
registers (for example, frequency selection) or by obtaining information on the parameters such as RSSI
level, Vbattery or PLL lock state. These operations are all carried out via a three-wire serial interface.
The AT86RF211S now replaces the AT86RF211, and offers numerous new features.
The AT86RF211S can operate in two different modes, described in the following table.
Table 3-1.
The AT86RF211S has a data rate of up to 100 kbps. The modulator and demodulator have been opti-
mized to increase the speed of the RF links while maintaining a high performance level.
The receiver’s bandwidth has been increased to 250 kHz for very wide band applications in the US.
It is now possible to run the XTO alone; this is useful for real-time demanding applications. The sinked
current is 150 µA, increasing according to the load capacitance when the XTO signal is buffered, to be
fed to a companion microcontroller (thus saving on the cost of the crystal for the MCU).
Mode Name
RF211
RF211S
Modes Description
Choice Made By
ADDFEAT = CTRL1[0] = 0
ADDFEAT = CTRL1[0] = 1
Compatibility
Yes
At reset state of
DTR register
Additional
Features
No
Yes
Recommended
For existing applications:
direct replacement
For new applications or
upgrades: new functions
e2v semiconductors SAS 2008
AT86RF211S