Description

ISD1820 Voice Recording Module

SPECIFICATION

1. Push?button interface, playback can be edge or level activated

2.Automatic power?down mode

3.On?chip 8? speaker driver

4. Signal 3.3V Power Supply

5.Can be controlled both manually or by MCU

6.Record up to around 10 seconds of audio

Dimensions: 37 x 54 mm STEP 1: MATERIAL PREPARATION In this tutorial, you will need as following below: 1 ISD1820-Voice Recorder Module 2.Speaker 8? 0.5W 3.Connector STEP 2: PINOUT DETAILS 1. VCC– 3.3V power supply 2. GND– Power ground 3. REC – The REC input is an active?HIGH record signal. The module starts recording whenever REC is HIGH. This pin must remain HIGH for the duration of the recording. REC takes precedence over either playback (PLAYL or PLAYE) signal. 4. PLAYE – Playback, Edge?activated: When a HIGH?going transition is detected on continues until an End?of?Message (EOM) marker is encountered or the end of the memory space is reached. 5. PLAYL – Playback, Level?activated, when this input pin level transits for LOW to HIGH, a playback cycle is initiated. 6. Speaker Outputs – The SP+ and SP? pins provide direct drive for loudspeakers with impedances as low as 8?. 7. MIC – Microphone Input, the microphone input transfers its signals to the on?chip preamplifier. 8. FT – Feed Through: By connecting the mini jumper, this mode enable the Microphone to drive the speaker directly. 9. P?E – By connecting the mini jumper, Play the records endlessly.