Atmel RCB256RFR2, Hardware User Manual

Page: 20 / 35

Atmel AVR10004: RCB256RFR2 – Hardware User Manual [APPLICATION NOTE]
42081A
−
AVR
−
03/2013
20
6.
Electrical characteristics
6.1
Absolute maximum ratings
Stresses beyond those listed under “Absolute maximum ratings” may cause permanent damage to the RCB. This is a
stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of this manual are not implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability. For more details about these parameters, refer to individual datasheets of the
components used.
Table 6-1. Absolute maximum ratings.
No. Parameter Condition Minimum Typical Maximum Units
7.1.1 Storage temperature range -40 +85 °C
7.1.2 Humidity Non-condensing 80 %
7.1.3 Supply voltage -0.3 +3.6
V
7.1.4 EXT I/O pin voltage All digital I/O signals -0.3 V_RCB+0.3
7.1.5
Analog I/O pin voltage Aref
(1)
Port F pins when ADC enabled
(2)
-0.3 2.0
7.1.6
Supply current from RCB battery through
EXT connectors Sum over all power pins together
-0.5 A
7.1.7
Battery charge current AAA NiMH Accu
AAA alkaline cell
(3)
0.5
0
A
mA
7.1.8 DC voltage at RF connection 100
V
7.1.9 ESD voltage HBM 1000
7.1.10 Input RF level 14 dBm
Notes:
1. Never drive Aref from an external source (see [1] for further details).
2. To measure voltages up V_RCB, see PGA settings in [1] .
3. Note Section 4.1.2 if RCB is mounted to a base board.
6.2
Recommended operating range
Table 6-2. Recommended operating range.
No. Symbol Parameter Condition Minimum Typical Maximum Units
7.2.1 T
OP
Operating temperature range 16MHz within ±40ppm -20 +70 °C
7.2.2 V_RCB Supply voltage f
CPU
= 16MHz or below 1.8
(1)
3.0 3.6 V
7.2.3 f
RF
Operating frequency range 2400 2483.5 MHz
Note:
1. Minimum value assuming stand-alone operated RCB. If mounted on a base board, value may be increased.
6.3
General RF specifications
For general RF specifications, refer to the Atmel Atmega256RFR2 datasheet [1] . The RCB schematic follows the
application circuit. The filter-balun and SMA connector result in a typical loss of 1dB in TX output power and sensitivity
compared to the values as shown in the radio transceiver section.