isd18b12 Winbond Electronics Corp America, isd18b12 Datasheet - Page 3

• Manufacturer Part Number: isd18b12
• Description: Single-chip, Single-message Voice Record/playback Device 6- To 12-seconds Duration
• Manufacturer: Winbond Electronics Corp America

1. GENERAL DESCRIPTION
Winbond’s ISD18B12 ChipCorder
special TryMe feature. The user-selectable duration is from 6 to 12 seconds, with wide operating
voltage ranging from 2.4V to 5.5V. Its sampling frequency, ranging from 4kHz to 8kHz, is externally
controlled via resistor at Rosc pin. This device also includes microphone amplifier, anti-aliasing filter,
multilevel storage array, smoothing filter and speaker amplifier. Two external resistors are used to
adjust the microphone amplifier gain for the incoming signal. Thus, a minimum record/playback
subsystem can be configured with a microphone, a speaker, several passive components, two push
buttons, and a power source.
Recordings are stored into on-chip non-volatile memory, providing zero-power message storage. This
unique, single-chip solution is made possible through Winbond’s patented Multi-Level Storage
technology. Voice and audio signals are stored directly into memory in their natural form, providing
high-quality, solid-state voice reproduction. The device is automatically power down after each
operation cycle with typical standby current, 1µA. With the embedded Flash memory employed, data
retention up to 100 years and typical 100,000 erase/record cycles can be reached.
2. FEATURES
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Supply voltage: 2.4V to 5.5V
User-selected variable sampling frequency and duration via external resistor
Microphone amplifier gain: user control via two external resistors
With feed-through enabled, r
remains active
Playback takes precedence over the Recording operation
Package option: die only
Temperature options: 0°C to +50°C
RECL
RECE
PLAYE
PLAYL
LEDR
LEDP
FT
TryMe : TryMe special mode
Sampling Frequency
Rosc
Duration
: Feed-through microphone input to speaker outputs
: Level recording
: LED output for playback
: Edge-trigger, toggle on-off
: LED output for recording
: Edge-trigger, toggle on-off
: Level playback or looping playback
®
6 secs
80 KΩ
8 kHz
ecord
is a new single-chip single-message record/playback device with a
microphone signal into memory while feed-through path
7.5 secs
6.4 kHz
100 KΩ
- 3 -
5.3 kHz
120 KΩ
9 secs
Publication Release Date: August 31, 2007
12 secs
160 KΩ
4 kHz
ISD18B12
Revision A1