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SR/AI
SR/AP
Hardware Reference
Release r09
Page 35 of 76
Notes:
(1)
UART-CTS#, IUR-IN# driven to CMOS high level, all other UART-lines left open
(2)
connection parameters are setup by the central device when connection is established
(3)
no data to be transmitted, central device sends an empty packet (80 bit) then peripheral device answers (empty
packet: 80 bit)
(4)
these are a typical connection parameters used by an iPhone, iPad or iPad mini device in the central device role
(5)
all UART-lines left open
(6)
same current consumption w. internal or external slow clock
5.6.2.2 LE Operating in Central Device Role
The following tables show the average power consumption of SR in LE-mode operating
in the central device role.
VSUP = 3,3V, T
amb
= 25°C, all GPIO lines left open, SLCK: 32,768 kHz
Condition
Note Slow
clock
SLCK
Current
Consumption
Unit
Tx power (dBm)
max (+7) min (-23)
I
Avg
I
Avg
Standby, scanning for peripherals
(6)
50
49
mA
Table 18: Supply Current BLE Terminal I/O Profile, Central Device Role, Standby
Condition
Note Slow
clock
SLCK
Current
Consumption
Unit
Tx power (dBm)
max (+7) min (-23)
I
Avg
I
Avg
Connected, connection interval: 7,5 ms, no data traffic
(2,3)
(6)
10,8
10,1
mA
Connected, connection interval: 7,5 ms, data traffic, data traffic
115 kbit/s at the serial port, central to peripheral
(2)
(6)
28
25
mA
Connected, connection interval: 7,5 ms, data traffic, data traffic
115 kbit/s at the serial port, peripheral to central
(2)
(6)
25
23
mA
Table 19: Supply Current BLE Terminal I/O Profile, Central Device Role, CI 7,5ms
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