RF Parameter

Value

Remark

Working frequency

2.402~2.480 GHz

Support ISM band

Transmitting power

4 dBm

-

Receiving sensitivity

-94 dBm

Air data rate is 250kbps

Test distance

60m

Test condition：clear and open area,antenna height: 2.5m,

air data rate: 250kbps

Hardware Parameter

Value

Remark

IC

CC2540F256RHAR/QFN40

-

FLASH

256 KB

-

SRAM

8 KB

-

Core

8051mcu

-

Size

59 * 18 mm

With case

Power supply

USB

-

Protocol

BLE 4.0

-

Electronic parameter

Min

Type

Max

Unit

Remark

Operating voltage

2.7

5

5.5

V

USBpower supply

Operating voltage

2.0

3.3

3.6

V

On-board power supply

Communication level

-

3.3

-

V

For 5V TTL, it may be atrisk of burning down

TX current

-

31.5

-

mA

-

RX current

-

22

-

mA

-

Sleep current

-

-

-

μA

-

Operating temperature

-40

-

85

℃

Industrial class

Storage temperature

-40

20

+125

℃

-