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
45
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Optional external 32.768kHz crystal
Min
Typ
Max
Drive level
-
-
1 uW
Input capacitance on XL1 and XL2 pads
-
4 pF
-
Run current for 32.768 kHz crystal based oscillator
-
0.25 uA
-
Startup time for 32.768 kHz crystal based oscillator
-
0.25 seconds
-
Peak to peak amplitude for external low swing clock input
signal must not be outside supply rails
200 mV
-
1000 mV
Be sure to tune the load capacitors on the board design to optimize frequency accuracy (at room temperature) so
it matches that of the same crystal standalone, Drive Level (so crystal operated within safe limits) oscillation
margin (R
neg
is at least 3 to 5 times ESR) over the operating temperature range.
BL652-SA On-board Chip Antenna Characteristics
The BL652-SA on-board chip monopole antenna radiated performance depends on the host PCB layout.
The BL652 development board was used for BL652 development and antenna performance evaluation. To obtain
similar performance, follow guidelines in section PCB Layout on Host PCB for BL652-SA to allow the on-board
antenna to radiate and reduce proximity effects due to nearby host PCB GND copper or metal covers.
BL652-SA on-board chip antenna datasheet: http://www.acxc.com.tw/product/at/at3216/AT3216-B2R7HAA_S-
R00-N198_2.pdf
Unit in dBi @2.44GHz
XY-plane
XZ-plane
YZ-plane
Efficiency
Peak
Avg
Peak
Avg
Peak
Avg
AT3216-B2R7HAA
-5.1
-8.7
-1.3
-7.4
-5.1
-8.7
25.0%
◆XY-plane ◆XZ-plane ◆YZ-plane