Telit Wireless Solutions BLUEMOD+S42/AI/ADC/LUA, Руководство пользователя

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S42
Hardware User Guide
1VV0301303 Rev. 11
Page 47 of 85 2021-05-06
Not Subject to NDA
5.5.1.2. Power Consumption S42/AI/ATEX
The purpose of the product variant S42/AI/ATEX is to enable customers to
create ATEX compliant products implementing Bluetooth technology. For ATEX
compliance energy carrying parts, causing risk of generating sparks, must be removed
from the design. Therefore, the energy storing coil of the DC/DC has been removed and
the DC/DC converter is permanently disabled for the /ATEX variant.
W
a
rning: The S42/AI/ATEX is not ATEX certified on its own,
but designed such, that a product implementing the
S42/AI/ATEX can pass A certification. The total capacitance
on the BlueMod/S42/AI/ATEX is 6,0µF 10%. The inductance is
neglectable, 3,9nH for antenna matching.
For the ATEX operation with DC/DC converter disabled the current consumption values
given in 5.5.1.1 Power Consumption S42/AI have to be replaced by the following
values.
VSUP = 3,0V, Tamb = 25°C, all GPIOs open, UART inputs at VSUP or GND, SLCK: 32,768 kHz
Condition
Radio inactive
Note Slow clock
SLCK
Current
Consumption
Unit
IAvg
Advertising Off, UICP not active
or serial interface up internal
Crystal 2,2
2,2
mA
Advertising Off, UICP active,
serial interface down
(1)
internal
Crystal 9,7
9,9
µA
Device in reset (2) any 0,45 mA
System off / wake-up RESET (1,2,3) 0,3 µA
System off / wake-up GPIO (1,2,3) 1,2 µA
(1) UART-RXD, IUR-IN# and UART-CTS# signals connected to CMOS high level
(2) same current consumption w. internal or external slow clock
(3) If UICP was disabled before AT+SYSTEMOFF, keep UART-CTS# at logic low
or leave it floating
Table 21: Supply Current Sleep Modes, no Radio Activity, ATEX