ST SPBT2632C2A User Manual
Bluetooth® technology class-2 module
Features
■ Bluetooth® radio
– Fully embedded Bluetooth® v3.0 with
profiles
– Class 2 module
– Complete RF ready module
– 128-bit encryption security
– Integrated antenna
– Multipoint capability
■ ST micro Cortex-M3 microprocessor up to
72 MHz
■ Memory
– 256 kb Flash memory
– 48 kb RAM memory
■ Data rate
– 1.5 Mbps maximum data rate
■ Serial interface
– UART up to 2.0 Mbps
– SPI interface
■ General I/O
– 7 general purpose I/Os
– 1 LPO input
■ User interface
– AT2 command set (abSerial)
– Firmware upgrade over UART
■ FCC and Bluetooth® qualified
■ EPL (end product listing) fulfilled
■ Single voltage supply: 2.5 V typical
■ Micro-sized form factor: 11.6 x 13.5 x 2.9 mm
■ Operating temperature range: -40 °C to 85 °C.
SPBT2632C2A
Datasheet − production data
August 2012 Doc ID 022833 Rev 4 1/27
This is information on a product in full production.
www.st.com
27
Contents SPBT2632C2A
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 RoHS compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Software architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Lower layer stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Upper layer stack: Amp'ed UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 AT command set: abSerial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.4 Bluetooth firmware implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Hardware specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.3 High speed CPU mode current consumption . . . . . . . . . . . . . . . . . . . . . . 11
5.4 Standard CPU mode current consumption . . . . . . . . . . . . . . . . . . . . . . . . 11
5.5 I/O operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.6 Selected RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.7 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.8 Pin placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.9 Layout drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7 Hardware design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1 Module reflow installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.2 GPIO interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.3 UART interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.4 PCB layout guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.5 Reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.1 External reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.2 Internal reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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SPBT2632C2A Contents
7.6 External LPO input circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.7 Apple iOS CP reference design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8 Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Doc ID 022833 Rev 4 3/27
List of tables SPBT2632C2A
List of tables
Table 1. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 3. High speed CPU mode current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 4. Standard CPU mode current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 5. I/O operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 6. Selected RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 7. Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 8. Soldering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 9. System configuration variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 10. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 11. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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SPBT2632C2A List of figures
List of figures
Figure 1. FW architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2. Pin placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3. Layout drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 4. SPBT2632C2A.AT2 module block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6. Connection to host device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 7. Typical RS232 circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 8. PCB layout guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 9. External reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 10. Internal reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11. External LPO circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 12. BT module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 13. Co-processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 14. Power switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Doc ID 022833 Rev 4 5/27
Description SPBT2632C2A
1 Description
The SPBT2632C2A.AT2 is an easy to use Bluetooth module, compliant with Bluetooth v3.0.
The module is the smallest form factor available which provides a complete RF platform.
The SPBT2632C2A.AT2 enables electronic devices with wireless connectivity, not requiring
any RF experience or expertise for integration into the final product. The
SPBT2632C2A.AT2 module, being a certified solution, optimizes the time to market of the
final applications.
The module is designed for maximum performance in a minimal space including fast speed
UART and 7 general purpose I/O lines, several serial interface options, and up to 1.5 Mbps
data throughput.
Optimized design allows the integration of a complete working Bluetooth modem, including
antenna, in the minimum possible size; only an additional external LPO (low power
oscillator) is required to enable low power mode capability.
The SPBT2632C2A.AT2 is a surface mount PCB module that provides fully embedded,
ready to use Bluetooth wireless technology. The reprogrammable Flash memory contains
embedded firmware for serial cable replacement using the Bluetooth SPP profile.
Embedded Bluetooth AT2 command firmware is a friendly interface, which realizes a simple
control for cable replacement, enabling communication with most Bluetooth enabled
devices, provided that the devices support the SPP profile. The SPBT2632C2A.AT2 ,
supporting iAP profile, provides communication with Android, smartphone, and Apple
Bluetooth enabled devices.
®
iOS
An Apple authentication IC is required to exchange data with an Apple device or access an
Apple device application. The AT2 FW includes the Bluetooth SPP profile capable of
recognizing the Apple authentication chip.
Customers using the Apple authentication IC must register as developers to become an
Apple certified MFI member. License fees may apply, for additional information visit:
http://developer.apple.com/programs/which-program/index.html.
Certified MFI developers developing electronic accessories that connect to the iPod
iPhone
®
, and iPad® gain access to technical documentation, hardware components,
®
,
technical support and certification logos.
Customized firmware for peripheral device interaction, power optimization, security, and
other proprietary features may be supported and can be ordered pre-loaded and configured.
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SPBT2632C2A RoHS compliance
2 RoHS compliance
ST modules are RoHS compliant and comply with ECOPACK® norms.
3 Applications
● Serial cable replacement
● M2M industrial control
● Service diagnostic
● Data acquisition equipment
● Machine control
● Sensor monitoring
● Security system
● Mobile health.
Doc ID 022833 Rev 4 7/27
Software architecture SPBT2632C2A
4 Software architecture
4.1 Lower layer stack
● Bluetooth v3.0
● Device power modes: active, sleep and deep sleep
● Wake on Bluetooth feature optimized power consumption of host CPU
● Authentication and encryption
● Encryption key length from 8 bits to 128 bits
● Persistent Flash memory for BD address and user parameter storage
● All ACL (asynchronous connection less) packet types
● Multipoint capability
● Sniff mode: fully supported to maximum allowed intervals
● Master slave switch supported during connection and post connection
● Dedicated inquiry access code for improved inquiry scan performance
● Dynamic packet selection channel quality driven data rate to optimize link performance
● Dynamic power control
● 802.11b co-existence AFH.
4.2 Upper layer stack: Amp'ed UP
● SPP, IAP, SDAP and GAP protocols
● RFComm, SDP, and L2CAP supported
● Multipoint with simultaneous slaves.
4.3 AT command set: abSerial
Please see command list reported in the SPBT2532C2.AT datasheet, Appendix D, for
details.
The complete command list including the iAP commands will be reported in the user
manual UM1547.
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SPBT2632C2A Software architecture
!-V
I!0
4.4 Bluetooth firmware implementation
Figure 1. FW architecture
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