User`s manual

Page 24 of 36 A2541R24x – User’s Manual
Release Date 11/22/13
Table 6 A2541R24x10 pin descriptions with references to chip pins
Pin Number
Pin Name Pin Type Description
TPS62730 PIN
CC2541 PIN
1, 3,12, 14,
22, 34
GND
Common
Ground
Connect to GND
2 DNC
Do Not Connect. Connecting this pin to anything will
significantly affect the performance of the module and may
void the end users right, under FCC, to operate the module
4 VDD_OUT Power (Analog)
DC-DC Converter Vout. 2.1V when converter is ON, VDD_IN
when in BYPASS mode. Up to 75mA drive capability
6
5 CONV_STAT Digital Output
DC-DC Converter Status pin. Open-drain with a 3.3kΩ series
resistor
1
6 NC Pin is not internally connected
7 - 9 P2_2 - P2_0 Digital I/O General-purpose digital I/O pin Port 2.2 - Port 2.0 34 - 36
10 - 11 P1_7 - P1_6 Digital I/O General-purpose digital I/O pin Port 1.7 - Port 1.6 37 - 38
17 - 19 P1_5 - P1_3 Digital I/O General-purpose digital I/O pin Port 1.5 - Port 1.3 5 - 7
21, 23 P1_1, P1_0 Digital I/O General-purpose digital I/O pin Port 1.1 and Port 1.0 9, 11
24 - 31 P0_7 - P0_0 Digital I/O General-purpose digital I/O pin Port 0.7 - Port 0.0 12 - 19
13 SCL
I
2
C clock
Can be used as I
2
C clock or digital I/O. Leave floating if not
used. If grounded disable pull up
2
15 SDA
I
2
C data
Can be used as I2C data or digital I/O. Leave floating if not
used. If grounded disable pull up
3
16
CONV_ON/
BYP_CNTRL
Digital Input
DC-DC Converter ON or Bypass control input. Logic 0 for
bypass, logic 1 for converter ON
There is a 1 MΩ resistor between pin 16 and pin 20
5
20
CONV_ON/
BYP_READ
Digital Output
CC2541 Port 1.2 status read.
There is a 1 MΩ resistor between pin 16 and pin 20
8
32 RESET_N Digital input Reset, active-low, see datasheet for implementation 20
33 VDD_IN
Power
(Analog)
Analog power supply connection for the Radio (2.0V to 3.6V)
through DC-DC converter
3