User's Manual
Table Of Contents
- 1 Overview and Key Features
- 2 Specification
- 2.1 Specification Summary
- 3 Hardware Specifications
- 3.3.4 OTA (Over-the-Air) smartBASIC Application Download
- 4 Power Consumption
- 5 Functional Description
- 5.1 Power Management (includes Brown-out and Power on Reset)
- 5.2 Clocks and Timers
- 5.3 Memory for smartBASIC Application Code
- 5.4 Radio Frequency (RF)
- 5.5 NFC
- 5.6 UART Interface
- 5.7 SPI Bus
- 5.8 I2C Interface
- 5.9 General Purpose I/O, ADC, PWM and FREQ
- 5.10 nRESET pin
- 5.11 nAutoRUN pin
- 5.12 vSP Command Mode
- 5.13 Two-wire Interface JTAG
- 5.14 BL652 Wakeup
- 5.15 Low Power Modes
- 5.16 Temperature Sensor
- 5.17 Random Number Generator
- 5.18 AES Encryption/Decryption
- 5.19 Optional External Serial (SPI) Flash
- 5.20 Optional External 32.768 kHz crystal
- 5.21 BL652-SA On-board Chip Antenna Characteristics
- 6 Hardware Integration Suggestions
- 7 Mechanical Details
- 8 Application Note for Surface Mount Modules
- 9 FCC and IC Regulatory Statements
- 10 Japan (MIC) Regulatory
- 11 CE Regulatory
- 12 EU Declarations of Conformity
- 13 Ordering Information
- 14 Bluetooth SIG Qualification
BL652
Datasheet
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
52
© Copyright 2016 Laird. All Rights Reserved
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Host PCB Land Pattern and Antenna Keep-out for BL652-SA
Figure 11: Land pattern and Keep-out for BL652-SA
All dimensions are in mm.
Host PCB Land Pattern and Antenna Keep-out for BL652-SANotes:
Note 1
Ensure there is no copper in the antenna ‘keep out area’ on any layers of the host PCB. Also keep all
mounting hardware or any metal clear of the area (Refer to 6.3.2) to reduce effects of proximity
detuning the antenna and to help antenna radiate properly.
Note 2
For the best on-board antenna performance, the module BL652-SA MUST be placed on the edge of
the host PCB and preferably in the corner with the antenna facing the corner. Above “Keep Out
Area” is the module placed in corner of PCB. If BL652-SA is not placed in corner but on edge of host
PCB, the antenna “Keep Out Area” is extended (see Note 4).
Note 3
BL652 development board has BL652-SA placed on the edge of the PCB board (and not in corner) for
that the Antenna keep out area is extended down to the corner of the development board, see
section PCB Layout on Host PCB for BL652-SA, Figure 11. This was used for module development and
antenna performance evaluation.