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PDF BTM852 Data sheet ( Hoja de datos )
| Número de pieza | BTM852 | |
| Descripción | Bluetooth Module | |
| Fabricantes | Buddies | |
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BTM852 DATASHEET
BTM852
Bluetooth Module Data Sheet
Document Type:
Document Version:
Release Date:
Bluetooth Module Datasheet
V1.0
March 14, 2012
Reproduction of this document, in part of in whole, by any means is prohibited without written permission
from Buddies Technology Limited. The information contained herein is believed to be accurate as of
the date of publication. However, Buddies Technology is not liable for any damages, including
indirect or consequential from the use of software this document represents, or any reliance of the
accuracy of this document. Buddies Technology reserves the right to change the contents of this
document at any time without notice.
This document contains proprietary confidential trade secrets and may be subject to additional
restrictions contained in the licensing agreement under which this document was obtained.
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1 page  
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BTM852 DATASHEET
1.2 Features
Small overall dimension(30mm x 14.5mm x 2mm)
Bluetooth Specification V4.0
Class 2 and Class 3 support
Physical connection as SMD type
Built-in RF combo filter, Integrated 26M Crystal.
Support profile by Host.
No radio signal interference, support for 802.11 co-existence
※ Some features are optional for customization on demand.
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5 Page 
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BTM852 DATASHEET
5. PHYSICAL INTERFACE
5.1 Power Supply
The transient response of the regulator is important. If the power rails of the module are
supplied from an external voltage source, the transient response of any regulator used
should be 20µs or less.
5.2 RF Interface
The module integrates a balun filter. The user can connect a 50ohms antenna directly to the
RF port. The module integrates PCB antenna.
5.3 Serial Interfaces
5.3.1 USB
There is a full speed (12M bits/s) USB interface for communicating with other
compatible digital devices. The module acts as a USB peripheral, responding to request
from a master host controller, such as a PC.
The module features an internal USB pull-up resistor. This pulls the USB_DP pin weakly
high when module is ready to enumerate. It signals to the USB master that it is a full
speed (12Mbit/s) USB device. The USB internal pull-up is implemented as a current
source, and is compliant with section7.1.5 of the USB specification v1.2. The internal
pull-up pulls USB_DP high to at least 2.8V when loaded with a 15kΩ ±5%
pull-down resistor (in the hub/host) when VDD =3.1V. This presents a The
venin resistance to the host of at least 900Ω. Alternatively, an external 1.5kΩ pull-up
resistor can be placed between a PIO line and DP on the USB cable.
11
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| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet BTM852.PDF ] | |
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