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ISD1820 Record and Playback Module – Voice Recorder (Up to 20 Seconds)

$5.10

A compact voice recording and playback module based on the ISD1820 chip. It features embedded Flash memory that retains data for up to 100 years with up to 100,000 record/erase cycles . It can be used in Standalone mode using its onboard buttons or Microcontroller-driven mode (e.g., with Arduino), making it ideal for voice recording projects, sound alarms, and interactive games.

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Key Features

Adjustable Recording Duration: Records from 8 to 20 seconds (adjustable via onboard potentiometer) .
Two Playback Modes: Edge-activated or Level-activated playback for flexible triggering .
Onboard Microphone: Built-in microphone for direct recording without external components .
Built-in Audio Amplifier: Can directly drive an external 0.5W / 8Ω speaker .
Wide Operating Voltage: Runs on 2.4V to 5.5V DC, compatible with most microcontrollers .
Auto Power-Down: Automatically enters standby mode after playback to save power .
Natural Voice Quality: Provides high-quality, natural voice output thanks to the integrated circuit design .

Key Technical Specifications

Specification	Value
Control Chip	ISD1820
Recording Duration	8 – 20 seconds (adjustable)
Operating Voltage	2.4V – 5.5V DC
Microphone	Onboard
Speaker Driver	Built-in (supports 8Ω / 0.5W)
Storage Memory	Embedded Flash (100 years data retention)
Record/Erase Cycles	Up to 100,000 cycles
Board Dimensions (approx.)	8 × 6 × 3 cm
Operating Modes	Standalone or Microcontroller-driven

Pin Configuration

Pin	Label	Description
VCC	2.4V – 5.5V	Power supply
GND	Ground	Ground
FT	FeedThrough	Passes microphone input directly to the speaker
REC	Record	Set HIGH to start recording (must stay HIGH for the recording duration)
PLAY-E	Playback, Edge	HIGH pulse (then LOW) starts playback until the end of message
PLAY-L	Playback, Level	LOW→HIGH starts playback; returning to LOW stops playback
SP+ / SP-	Speaker Output	Connect an external 8Ω / 0.5W speaker
MIC	Microphone Input	External microphone input (can replace onboard mic)