BT24 Datasheet Amp’ed RF Technology, Inc.
BT24 Features BT24 Product Specification Bluetooth features Bluetooth qualified module Bluetooth v2.
Table of Contents 1 1.1 1.2 1.3 1.4 2 Software Architecture................................................................................................................................................ 4 Lower Layer Stack ..................................................................................................................................................... 4 Upper Layer Stack: Amp’ed UP Lite .....................................................................................................
1 Software Architecture 1.1 Lower Layer Stack Bluetooth v2.1+EDR 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 to 128 bits Persistent FLASH memory for BD Address and user parameter storage All ACL packet types.
2 Hardware Specifications General Conditions (VIN= 3.3V and 25°C) 2.1 Recommended Operating Conditions Rating Min Operating Temperature Range Supply Voltage VIN Signal Pin Voltage RF Frequency Typical Max Unit -20 - +60 °C 3.0 3.3 3.6 Volts - 3.3 - Volts 2400 - 2483.5 MHz 2.2 Absolute Maximum Ratings Rating Min Typical Max Unit Storage temperature range -20 - +80 °C Supply voltage VIN -0.3 - +5.0 Volts I/O pin voltage VIO -0.3 - +5.
Radio Receiver BER < .001 Sensitivity level with DH5 BER < .001 Maximum usable level with DH1 Input VSWR -90 dBm 0 dBm 2.5:1 Radio Transmitter 50 Ω load Maximum output power +6 Initial Carrier Frequency Tolerance 20 dB Bandwidth for modulated carrier dBm 0 kHz 0.9 MHz 2.5 I/O Operating Characteristics Symbol Parameter Min Max Unit VIL Low-Level Input Voltage - 0.7 Volts VIN, 3.6V VIH High-Level Input Voltage 2.2 - Volts VIN, 3.6V VOL Low-Level Output Voltage - 0.
2.6 Pin Assignment Name Type UART Interface Pin # Description ALT Function 5V Tolerant RXD I 8 Receive data Y TXD O 6 Transmit data Y CTS I 9 Clear to send (active low) Y RTS O 10 Request to send (active low) Y I 2 Reserved Initial state Boot Loader Boot 0 Power and Ground VDD 22 VDD GND 21 GND Reset 3.
Am 2.7 Layout Drawing Size: 15 mm x 20 mm x 2.2 mm (height) 600mil (15.2 mm) 520 mil (13.2 mm ) 65mil (1.65 mm ....,.; ..! 1 GPI0[3] VIN22 2 BOOTO GND21 3 RESET GPI0[4] 20 4 PCM DOUT LPO 19 5 PCM DIN GPI0[2] 18 6TXD GPI0[1] 17 7 PCM CLK TOP VIEW GPI0[7] 15 9CTS GPI0[8] 14 10 RTS _ '---. --.----- 40mil (1.02 mm) j 1 _ _ 60mil (1.53 mm) 820 mil (20.8 mm) GPIO[O] 16 8 RXD ) PCM SYNC 13 GPI0[6] 12 GPI0[5] 11 ---.-- 95mil 2.
FAST TRACK YOUR WIRELESS PROJECT
3 Module Block Diagram 4 Hardware Design Amp’ed RF modules support UART, I2C, SPI, and GPIO hardware interfaces. Please note that the usage of these interfaces is dependent upon the firmware that is loaded into the module, and is beyond the scope of this document. The AT command interface uses the main UART by default. Notes All unused pins should be left floating; do not ground. All GND pins must be well grounded.
4.2 GPIO Interface All GPIOs are capable of sinking and sourcing 4mA of I/O current. 4.3 UART Interface The UART is compatible with the 16550 industry standard. Four signals are provided with the UART interface. The TXD and RXD pins are used for data while the CTS and RTS pins are used for flow control. Connection to Host Device Typical RS232 Circuit Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste.
4.4 PCB Layout Guidelines 4.5 Reset Circuit Two types of system reset circuits are detailed below. 4.5.1 External Reset Circuit: Note: RPU ranges from 30K ohm to 50K ohm internally. Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste. 138, San Jose, CA 95131 电话：+86 022-83945100 | 传真：+86 022-83945100 转 111 | E-mail: infocn@ampedrftech.
4.5.2 Internal Reset Circuit: Notes: - RPU ranges from 30K ohm to 50K ohm internally. - RRST should be from 1K ohm to 10K ohm 4.6 External LPO Input Circuit An optional low power oscillator input may be added to allow deep sleep and sniff modes. LPO Parameters: Frequency: 32.768 KHz Tolerance: 150 ppm Voltage Levels: Low: 0.5 V High: 1.8 V Input Capacitance: 2.
4.7 Audio application Reference Design Part 1. WM8904 Part 2. BT Module Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste. 138, San Jose, CA 95131 电话：+86 022-83945100 | 传真：+86 022-83945100 转 111 | E-mail: infocn@ampedrftech.
Part 3. Stereo DAC with Power Amp Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste. 138, San Jose, CA 95131 电话：+86 022-83945100 | 传真：+86 022-83945100 转 111 | E-mail: infocn@ampedrftech.
5 Regulatory Compliance This module has been tested and found to comply with the FCC Part15 and IC RSS-210 rules. These limits are designed to provide reasonable protection against harmful interference in approved installations. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
6 Version Comparison Guide BT24-LT BT24-AUD BT Profiles SPP, IAP, HID A2DP, AVRCP, HFP ,HID, OBEX, SPP, IAP RAM Memory 16K 48K ROM Memory 128K 256K CPU Speed 36MHz 72MHz GPIO 9 13 ADC pins 1 4 DAC pins 0 2 Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste. 138, San Jose, CA 95131 电话：+86 022-83945100 | 传真：+86 022-83945100 转 111 | E-mail: infocn@ampedrftech.
7 Ordering Information Part Name Description BT24LT Lite version BT24-AUD Supports stereo audio applications 8 Revision History Data Revision Description 01-June-2012 1 First release 11-Nov-2012 1.1 Updated FCC and IC certifications 19-Nov-2012 1.2 Added BT24-AUD information Updated Pin assignment; Reference circuit Phone: +1 408 213-9530 | Fax: 408-213-9533 | E-mail: info@ampedrftech.com Address : 1879 Lundy Ave, ste.
