Data Sheet

CC2541
www.ti.com
SWRS110D JANUARY 2012REVISED JUNE 2013
PIN DESCRIPTIONS
PIN NAME PIN PIN TYPE DESCRIPTION
AVDD1 28 Power (analog) 2-V–3.6-V analog power-supply connection
AVDD2 27 Power (analog) 2-V–3.6-V analog power-supply connection
AVDD3 24 Power (analog) 2-V–3.6-V analog power-supply connection
AVDD4 29 Power (analog) 2-V–3.6-V analog power-supply connection
AVDD5 21 Power (analog) 2-V–3.6-V analog power-supply connection
AVDD6 31 Power (analog) 2-V–3.6-V analog power-supply connection
DCOUPL 40 Power (digital) 1.8-V digital power-supply decoupling. Do not use for supplying external circuits.
DVDD1 39 Power (digital) 2-V–3.6-V digital power-supply connection
DVDD2 10 Power (digital) 2-V–3.6-V digital power-supply connection
GND 1 Ground pin Connect to GND
GND Ground The ground pad must be connected to a solid ground plane.
NC 4 Unused pins Not connected
P0_0 19 Digital I/O Port 0.0
P0_1 18 Digital I/O Port 0.1
P0_2 17 Digital I/O Port 0.2
P0_3 16 Digital I/O Port 0.3
P0_4 15 Digital I/O Port 0.4
P0_5 14 Digital I/O Port 0.5
P0_6 13 Digital I/O Port 0.6
P0_7 12 Digital I/O Port 0.7
P1_0 11 Digital I/O Port 1.0 20-mA drive capability
P1_1 9 Digital I/O Port 1.1 20-mA drive capability
P1_2 8 Digital I/O Port 1.2
P1_3 7 Digital I/O Port 1.3
P1_4 6 Digital I/O Port 1.4
P1_5 5 Digital I/O Port 1.5
P1_6 38 Digital I/O Port 1.6
P1_7 37 Digital I/O Port 1.7
P2_0 36 Digital I/O Port 2.0
P2_1/DD 35 Digital I/O Port 2.1 / debug data
P2_2/DC 34 Digital I/O Port 2.2 / debug clock
P2_3/ 33 Digital I/O, Analog I/O Port 2.3/32.768 kHz XOSC
OSC32K_Q2
P2_4/ 32 Digital I/O, Analog I/O Port 2.4/32.768 kHz XOSC
OSC32K_Q1
RBIAS 30 Analog I/O External precision bias resistor for reference current
RESET_N 20 Digital input Reset, active-low
RF_N 26 RF I/O Negative RF input signal to LNA during RX
Negative RF output signal from PA during TX
RF_P 25 RF I/O Positive RF input signal to LNA during RX
Positive RF output signal from PA during TX
SCL 2 I
2
C clock or digital I/O Can be used as I
2
C clock pin or digital I/O. Leave floating if not used. If grounded
disable pull up
SDA 3 I
2
C clock or digital I/O Can be used as I
2
C data pin or digital I/O. Leave floating if not used. If grounded
disable pull up
XOSC_Q1 22 Analog I/O 32-MHz crystal oscillator pin 1 or external clock input
XOSC_Q2 23 Analog I/O 32-MHz crystal oscillator pin 2
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