This module (HCMODU0093) uses the ISD1820 voice record and playback IC to record a single voice message of up to 10 seconds in length. The recorded message is stored in its specialized analogue flash memory that will keep the message stored even when power is removed.
Operating Voltage: Wide power supply ranges from 2.4V to 5.5V DC
With the internal audio amplifier, this board can drive 8 Ohm 0.5W speakers directly
An on-board microphone
Push‐button interface, playback can be edge or level activated
Record up to 20 seconds of audio
Automatic power-down mode (standby mode)
Audio recording control mode: the key to control or microcontroller, IO has drawn the line of control
REC button: record button, you can press and hold the recording, release the button to stop recording
RLAYE key: trigger mode playback, press will play this whole speech
PLAYL key: jog mode playback, press and hold until playback, release to stop playback
RPL Jumper: loop mode control, loop playback
FT Jumper: direct control, microphone voice through the speaker can playback
ISD1820 Voice Recording Recorder Module With Mic Sound Audio Loudspeaker
ISD1820 is a small Voice Recorder and Playback module that can do the multi-segment recording. The user can achieve a high quality of recording (for 8 to 20secs) for each application with the adjustment of the on-board resistor. This Voice Recorder/Playback module is designed with embedded-Flash memory.
The main Voice Recorder/Playback IC is ISD1820.
This ISD1820 Voice Recorder/Playback Module reproduces high-quality, natural voice and audio from the recorded audio by Mic or driven through Microcontroller. Because of its dual operation mode (Standalone and Microcontroller driven), we can easily use this as per requirement and with a slight change of the onboard resistor, we can get flexibility in the sampling frequency of the recording duration & quality.
In this module, Voice signals can be fed through differential onboard microphone input.
For outputs, the module provides an 8Ω 0.5W speaker out directly from the board.
Pin Configuration
VCC……3-5V
GND……GND
FT…….Feed through. Feeds the input of the microphone directly to the speaker.
P-L……Playback level activated. Messages is played back whilst pin is high.
P-E……Playback edge activated. Message will play on a high going transition and will continue to play until end of message.
REC……Record activate. Will record a message whenever REC pin is high.
There are two modes to play the voice in the voice chip:
Playback, Edge-activated: If the module detects the HIGH signal on the pin, then the device starts the playback cycle. Playback cycle continues until an End-of-Message (EOM) marker is encountered or the end of the memory space is reached. After completion of the playback cycle, the device automatically powers down itself and into the standby mode.
Playback, Level-activated:If the module detects the LOW to HIGH signal on this pin, then a playback cycle is initiated. Playback continues until PLAYL is pulled LOW or an End-of-Message (EOM) marker is detected, or the end of the memory space is reached. The device automatically powers down to standby mode upon completion of the playback cycle.
