This Mp3 sound module version of V1.1 is updated version of V1.0 and have all of the function of V1.0.And the V1.1 has a delay by default, but if you don't need the delay, you can remove the delay in a very easy way as below : "please don't detest the signal of "busy control", then there is no any delay, it is very easy to change in the code".
The SD card is not include in this item list, the SD card in the picture is just to help customer to find the correct SD card for this item.
WTV020-SD module is a reusable mass storage voice module ,can plug a maximum capacity of 1GB SD card memory and can load the WAV and AD4 audio .The voice module uses WTV020SD-20SS as the core chip , with MP3 control mode, one to one key control mode, power on loop control mode and the two-line serial control mode.
- Support plug-largest-capacity of 1G SD card
- Automatically identify audio files
- Can load WAV audio at 6KHz ~ 16KHz sample rate
- Can store up to 512 Section voice
- Support for micro-processor and key control
- With power-down save operation data function
- Support combination of documents playback, including the mute combination
- Quiescent Current: 16uA (do not insert SD card)
- Support play 4 Bit ADPCM format file
- Can load AD4 audio at 6KHz ~ 32KHz and 36KHz sampling rate
- 16bitDAC and PWM audio output
- With WTV020-SD-20S, WTV020-SD-16P two module types
- Can play any paragraph of the voice
- Can be loaded voice without software, just need to place voice into the SD card
- Operating voltage: DC2.5 ~ 3.6V
WTV020-SD module is a voice-rewritable voice modules with maximum storage capacity up to 1GB SD card memory. It supports WAV and AD4 audio format.
WTV020-SD voice module adopts WTV020SD-20SS as core procesing chip. It supports MP3 control mode. Key control models (5-voice). Loop play mode and two-line serial control mode. Control mode is set while producing, which can not be changed through configuring.
MP3 control mode: play / stop, next, last, volume +, volume -.
Key control mode (5 voice): Support three sub-control methods as below :
1) Key can be duplicate-triggered by pulse ;
2) All keys are Play/Stop trigger (No single recycled) ;
3) All keys are Play/Stop trigger (single can be recycled).
Loop play mode: After powered on, no need to trigger any I / O port, directly play all the voice in SD card, with functions to record playing points while power off, from which it plays while powered on again. Two sub-control modes, 1. P04 has pulse-triggered play/pause function; 2. P05 has level-triggered play/pause function.
Two-line serial control mode: controlled by MCU clock via CLK and DI data lines. Free to play voice at any address. In this mode, it has voice combination play function.
Audio content updates directly to SD card on the PC. The module supports FAT file system. Support AD4 of 6KHz ~ 32KHz, 36KHz sampling rate and WAV audio of 6KHz ~ 16KHz sampling rate.
WTV020-SD module can be used in automotive electronics (anti-theft alarm system, reversing radar, GPS navigation systems, electronic dog, central locking), intelligent home systems, home burglar alarm, the human voice prompt of medical devices, music players, home appliances (cooker , rice cookers, microwave ovens), entertainment (games, amusement machines), learning models (early learning machine, child audio books), intelligent transportation equipment (toll stations, car parks), communications equipment (telephone exchanges, telephone), industrial control areas (lifts, industrial equipment), toys and other fields.