Product overview
WTV020-SD music module can repeat erasing voice content, with big storage. External memory is max 1GB SD storage. Can load WAV and AD4 audio format.
WTV020-SD SD Storage voice module and WTV020-20S music module with master control at the core, support MP3 control mode, key mode by one to one (3 sections and 5 sections), electrify circulate control mode and two-line serial control mode. Control mode has been set when making chip, can not be switched during operating. If you need any other control mode, we can customize for you.
MP3 control mode: play/pause, next, last, volume+, volume- and so on.
Key mode by one to one (three section voice): one key correspond to one trigger voice, have function with play 3 sections voice and adjust volume, all key muted by pulse non repeat trigger.
Key mode by one to one (five section voice): have three control mode. 1. All key are pulse repeat trigger 2. All key are play/pause trigger(single not cycle) 3. All key are play/pause (single cycle)
Power-on loop play control mode: after power on, without triggering any I/O port, automatically play all voice in SD card storage, with power off memory function. When power on, it will play from the time when last power off. It have two control modes: first, P04 has function of pulse play and pause; second, P05 has level play and pause function.
Two-line serial control mode: MCU through CLK and ID data line to send data to control WTV020-SD. Can play any address voice. In this status, can have voice combination play.
Voice content change is direct through SD card reader to change on PC. The module supports FAT file system, 6KHz-32KHz, 36KHz sample rate AD4 voice and 6KHz-16KHz sample rate WAV audio, can recognize automatically voice sample rate and voice file format.
Features
☆Support external max 1G SD card
☆Support play 4 Bit ADPCM format file
☆Recognize audio file automatically
☆Load 6KHz-32KHz, 36KHz sample rate AD4 audio
☆Load 6KHz-16KHz sample frequency WAV audio
☆16bitDAC and PWM audio output
☆Can store 512 sections voice at most
☆Two module type: WTV020-SD-20S, WTV020-SD-16P
☆Support micro-processor and key control
☆Can call any voice in any audio section to play
☆Power-off memory function
☆Load voice, no need software to assistant, just put voice files into SD card.
☆Support file combination play, mute combination
☆Working voltage: DC2.5~3.6V
☆Quiescent current: 16uA(not inset SD card)
Package pin diagram
1）WTV020-SD-20S
Pin description:
2）WTV020-SD-16P
Pin description:
Module selection
Control mode of WTV020-SD-20S is the same as WTV020-SD-16P except package. Control mode can choose following modes, also can customized specific function mode under some size order.
Application area
WTV020-SD module apply in automotive electronics(burglar alarm, parking sensors, GPS navigator, electronic dog, lock), intelligent home furnishing system, family burglar alarm, medical equipment voice prompt, music play, household appliances (induction cooker, electric cooker, microwave oven), entertainment equipment (game machine, amusement machine), study mode(early education machine, children audio material), intelligent transportation equipment(toll station, parking), communication equipment(telephone switchboard, telephone), industrial control area (lift, industrial equipment), toy and other areas.