User's Manual

14
Atmel AVR2042
8334A-AVR-05/11
7 Electrical characteristics
7.1 Absolute maximum ratings
Stresses beyond those listed under “Absolute maximum ratings” may cause
permanent damage to the board. 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 7-1. Absolute maximum ratings.
No. Parameter Condition Minimum Typical Maximum Unit
7.1.1 Storage temperature range -40 +85 °C
7.1.2 Relative Humidity Non-condensing 90 % r.H.
7.1.3 Supply voltage -0.3 +3.6 V
7.1.4 EXT I/O pin voltage -0.3 Vcc + 0.3 V
7.1.5 Supply current from batteries Sum over all power pins -0.5 A
7.1.6 Battery charge current
(1)
0 mA
Note: 1. Keep power switch off or remove batteries from REB-CBB when external power is supplied.
7.2 Recommended operating range
Table 7-2. Recommended operating range.
No. Parameter Condition Minimum Typical Maximum Unit
7.2.1 Temperature range -10 +60 °C
7.2.2
Supply voltage (Vcc)
Plain REB-CBB 1.6 3.0 3.6 V
7.2.3 REB plugged on REB-CBB 1.8 3.0 3.6 V
7.2.4 Serial flash access in usage 2.3 3.0 3.6 V
7.3 Current consumption
Test conditions (unless otherwise stated):
V
DD
= 3.0V, T
OP
= 25°C
The following table lists current consumption values for typical scenarios of a
complete system composed of Atmel REB-CBB and Atmel REB231. The Z-diode has
been removed as described below.
Table 7-3. Current consumption of REB-CBB populated with REB231.
No. Parameter Condition Minimum Typical Maximum Unit
7.3.1 Supply current MCU @ power-down,
transceiver in state SLEEP,
serial flash in Deep-Sleep
17 µA
7.3.2 Supply current MCU @ 2MHz,
transceiver in state TRX_OFF
3 mA
7.3.3 Supply current MCU @ 16MHz (int. RC 32MHz),
transceiver in state TRX_OFF
15 mA