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
17
© Copyright 2016 Laird. All Rights Reserved
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Signal Levels Notes:
Note 1
For VDD_nRF≥1.7V. The smartBASIC firmware supports high drive (3 mA, as well as standard drive).
Note 2
For VDD_nRF≥2.7V. The smartBASIC firmware supports high drive (5 mA (since VDD_nRF≥2.7V), as
well as standard drive).
Table 6: SIO pin alternative function AIN (ADC) specification
Parameter
Min
Typ
Max
Unit
ADC Internal reference voltage
-1.5%
0.6 V
+1.5%
%
ADC pin input
internal selectable scaling
4, 2, 1, 1/2,
1/3, 1/4, 1/5
1/6
scaling
ADC input pin (AIN) voltage maximum without
damaging ADC w.r.t
1
VCC Prescaling
0V-VDD_nRF 4, 2, 1, ½, 1/3, ¼, 1/5, 1/6
VDD+0.3
V
Configurable via smartBASIC
Resolution
8bit
mode
10bit mode
12bit mode
bits
Configurable via smartBASIC
2
Acquisition Time, source resistance ≤10kΩ
Acquisition Time, source resistance ≤40kΩ
Acquisition Time, source resistance ≤100kΩ
Acquisition Time, source resistance ≤200kΩ
Acquisition Time, source resistance ≤400kΩ
Acquisition Time, source resistance ≤800kΩ
3
5
10
15
20
40
uS
uS
uS
uS
uS
uS
Conversion Time
3
<2
uS
ADC input impedance (during operation)
3
Input Resistance
Sample and hold capacitance at maximum gain
>1
2.5
MOhm
pF
Recommended Operating Parameters Notes:
Note 1
Stay within internal 0.6 V reference voltage with given pre-scaling on AIN pin and do not violate ADC
maximum input voltage (for damage) for a given VCC, e.g. If VCC is 3.6V, you can only expose AIN pin
to VDD+0.3 V. Default pre-scaling is 1/6 which configurable via smartBASIC.
Note 2
smartBASIC runtime engine firmware allows configurable resolution (8-bit, 10-bit or 12-bit mode)
and acquisition time. The sampling frequency is limited by the sum of sampling time and acquisition
time. The maximum sampling time is 2us. For acquisition time of 3us the total conversion time is
therefore 5us, which makes maximum sampling frequency of 1/5us = 200kHz. Similarly, if acquisition
time of 40us chosen, then the conversion time is 42us and the maximum sampling frequency is
1/42us = 23.8kHz
Note 3
ADC input impedance is estimated mean impedance of the ADC (AIN) pins.