PM0237 datasheet(9/88 Pages) STMICROELECTRONICS

部件名	PM0237

功能描述	The main purpose of this document is to provide a developer

PDF	88 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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9 / 88 page

DocID027104 Rev 2

9/88

PM0237

Bluetooth low energy technology

In addition, Bluetooth specification v4.1 have been released with new supported features:

•

Multiple roles simultaneously support

•

Support simultaneous advertising and scanning

•

Support being Slave of up to two Masters simultaneously

•

Privacy V1.1

•

Low Duty Cycle Directed Advertising

•

Connection parameters request procedure

•

LE Ping

•

32 bits UUIDs

•

L2CAP Connection Oriented Channels

For more information about these new features refer to the related specification document.

Figure 2. Bluetooth low energy stack architecture

1.2

Physical layer

The physical layer is a 1 Mbps adaptive frequency-hopping Gaussian Frequency Shift

Keying (GFSK) radio. It operates in the license free 2.4 GHz ISM band at 2400-2483.5 MHz.

Many other standards use this band: IEEE 802.11, IEEE 802.15.

The BLE system uses 40 RF channels (0-39), with 2 MHz spacing. These RF channels

have frequencies centered at:

PM0237 数据表(PDF) 9 Page - STMicroelectronics