Module Introduction:
WT2605B02 is a powerful new high-quality MP3 Recording module To meet the requirements of customers in many ways. It can use folder classification, specified file name play and specified index number play, which can organize your audio files more flexibly. You can also record and play by file name or index number in the specified folder, and you can delete any file. With functions such as reading memory status and memory capacity query, you can know your memory status at any time and use it more flexibly.
Recording function ：
1. Support TF card and USB flash disk recording
2. Support index recording and file name recording
3. Support microphone recording and line recording
Audio file type:
4. Support WAV, MP3 high-quality audio format playback
5. Support MP3 audio files with sampling rate of 48KHz and bit rate of 32~320Kbps
Storage mode:
1. Support external TF card (maximum 32G) and USB stick (maximum 32G)
2. At 128kbps bit rate, 32GTF card and 32GU disk can store about 25 hours of voice respectively
Voice change mode:
1. TF card: The audio content in the TF card can be freely changed through the USB interface (XP system, WIN7 system, WIN8 system)
Accessible power amplifier
1. The module has a built-in 1W power amplifier to directly drive the 8 ohm/1W horn
2. Other power amplifier chips with different powers can be connected externally
Support different playback modes
Operation instruction
1. Serial port commands such as next song, previous song, play, pause, etc
2. You can specify a track to play in the TF card/USB flash drive
3. TF card/USB disk index or file name can be specified for recording
4. Level 32 volume adjustable
control mode
1. Standard UART, baud rate 9600
technical specifications
1. USB interface full speed 2.0
2. Power supply voltage: DC3.0~5.2V
3. Rated current 20~250mA (related to load)
4. IO port level 3.3V TTL level
5. Operating temperature - 40~85 ℃
6. Humidity 5%~95%
Application scenarios
1. Building intercom, conference recording,
2. Railway recording equipment, etc
Product characteristics ：
1. Support WAV, MP3 high-quality audio format playback, beautiful sound.
2. High quality MP3 recording with 48KHz sampling rate and 32~320Kbps bit rate.
3. Use built-in memory or external USB flash disk as memory, and support 32G memory and 32G USB flash disk at most.
4. There are three recording schemes, microphone, line recording and dual channel recording.
5. It supports long file name recording with up to 22 characters.
6. The recording can last up to 3 months.
7. FAT and FAT32 file systems are used.
8. The PC can freely change the audio content of the internal memory through the USB interface.
9. Support USB sound card function.
10. UART asynchronous serial port communication and general standard interface protocol are used for more flexible and convenient control.
11. The built-in 1W power amplifier directly drives the 8 ohm/1W speaker with loud voice and 32 level adjustable volume.
12. DC 5V power supply.
13. Power on initialization reaction time is 3s.
Note: This module has no key operation mode and must be used together with MCU.
Pin description ：
Note: Do not supply power to external devices at the power output terminal VDD33 to avoid affecting the operation of the module. It is only used to connect low power consumption devices such as pull-up resistors.
technical specifications ：
Electrical parameters ：
Cooperative customers:
Service concept:
Weichuang Zhiyin adheres to the concept of only creating the "core", and then can reach a far future. It insists on developing new products with customers as the center. With the strategic goal of serving customer engineers well and serving more customer engineers, Weichuang Zhiyin provides products of "more, faster, better, and cheaper" to innovate and optimize constantly. Faced with the impact of the global semiconductor industry on the "choke" phenomenon in the Chinese market and the "chip war" in the chip market of the Internet of Things industry, as well as many international situations and current situations, Weichuang Zhiyin has always insisted on providing fast voice and intelligent Internet of Things application solutions and products for customer engineers, so as to shorten the development cycle of customer products. With the goal of meeting and exceeding the expectations of customer engineers, we are committed to providing customer engineers with high-quality voice solutions and comprehensive best BOM that exceed expectations.
Focusing on voice technology research and development, since 1999 ：
