RF-BM-S02A
Bluetooth Low Energy Module
RF-BM-S02A
is a Bluetooth Low Energy (BLE) module based on TI CC2541F256, an 8051 core BLE
System-on-Chip (SoC). This PCB module integrates a 32 MHz crystal, a 32.768 kHz
crystal, an LC balun, an RF matching filter, and a meander line PCB antenna. It
is pre-programmed with the BLE 4.0 stack and an application communication
protocol over its full speed USB interface. The
module is highly suited for systems where ultralow power consumption is required.
This is specified by various operating modes. Short transition times between
operating modes further enable low power consumption. RF-BM-S02A
is pin-compatible with the RF-BM-S02 and RF-BM-S02I in SMT package, if the USB
is not used on the RF-BM-S02 & RF-BM-S02I and the I2C/extra I/O
is not used on the RF-BM-S02A. Compared to the RF-BM-S02I and RF-BM-S02, the RF-BM-S02A
provides lower RF current consumption. The RF-BM-S02A d
oes not have the USB interface of the RF-BM-S02 and RF-BM-S02I,
and provides lower maximum output power in TX mode. The RF-BM-S02A also adds a
HW I2C interface.
Table SEQ Table \* ARABIC
1. Parameters
of RF-BM-S02A
|
Chipset
|
CC2541F256
|
|
Supply
Power Voltage
|
2.0
V ~ 3.6 V, recommended to 3.3 V
|
|
Frequency
|
2402 MHz ~
2480 MHz
|
|
Maximum
Transmit Power
|
Max.:
0 dBm (Programmable: -23.0 dBm ~ 0 dBm)
|
|
Receiving
Sensitivity (low gain mode)
|
-87 dBm
|
|
Receiving
Sensitivity (high gain mode)
|
-93
dBm
|
|
GPIO
|
13
|
|
Crystal
|
32
MHz, 32.768 kHz
|
|
RAM
|
8 KB
|
|
Flash
|
256
KB
|
|
Package
|
SMT
Packaging
|
|
Frequency
Error
|
±20
kHz
|
|
Dimension
|
15.2 mm x 11.2
mm x (1.7 ± 0.1) mm
|
|
Type
of Antenna
|
PCB
Antenna
|
|
Operating
Temperature
|
-40 ℃ ~ +85
℃
|
|
Storage
Temperature
|
-40
℃ ~ +125 ℃
|
|
RX
Current
|
17.5 mA
|
|
TX
Current (-6 dBm)
|
18.2
mA
|
|
Power
mode 1 (3-μs wake-up)
|
270 μA
|
|
Power
mode 2 (sleep timer on)
|
1.0
μA
|
|
Power
mode 3 (external interrupts)
|
0.5 μA
|
Table SEQ Table \* ARABIC
2. Pin Functions
of RF-BM-S02A
|
Pin
|
Name
|
Chip Pin
|
Pin Type
|
Description
|
|
1
|
GND
|
-
|
Power
|
GND
|
|
2
|
VCC
|
-
|
Power
|
Power
supply 2.0 V ~ 3.6 V
|
|
3
|
P22
|
P2.2
|
I/O
|
|
|
4
|
P21
|
P2.1
|
I/O
|
|
|
5
|
RESET
|
RST
|
RESET
|
|
|
6
|
P20
|
P2.0
|
I/O
|
|
|
7
|
P17
|
P1.7
|
I/O
|
|
|
8
|
I2C_SCL
|
I2C_SCL
|
I/O
|
I2C_SCL
|
|
9
|
I2C_SDA
|
I2C_SDA
|
I/O
|
I2C_SDA
|
|
10
|
P12
|
P1.2
|
I/O
|
|
|
11
|
P11
|
P1.1
|
I/O
|
|
|
12
|
P07
|
P0.7
|
I/O
|
|
|
13
|
P06
|
P0.6
|
I/O
|
|
|
14
|
P05
|
P0.5
|
I/O
|
|
|
15
|
P04
|
P0.4
|
I/O
|
|
|
16
|
P03
|
P0.3
|
I/O
|
|
|
17
|
P02
|
P0.2
|
I/O
|
|
|
18
|
P01
|
P0.1
|
I/O
|
|