Datasheet > ISD1616BX01

ISD1616BX01

更新时间： 2024-02-03 19:12:58

品牌	Logo	应用领域
华邦 - WINBOND		/
页数	文件大小	规格书
23页	309K
描述
Single-Message Single-Chip 6.6- to 40-Second Voice Record & Playback Devices with vAlert Option

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ISD1616BX01 数据手册

ISD1600B SERIES

at the end of the message. During a record cycle, the device powers down immediately after

REC is released to High.

6.2. FUNCTIONAL DESCRIPTION EXAMPLE

The following example operating sequences demonstrate the functionality of the ISD1600B series.

6.2.1. Record a Message

The device starts recording from the beginning of the memory when REC transits from High

to Low and stays at Low. A record cycle is completed when REC is pulled to High or entire

memory is filled up. Then an End-of-Message (EOM) marker is written at the end of message,

enabling a subsequent playback cycle to terminate appropriately. Hence, the device

automatically enters into standby mode.

Record takes precedence over playback operation. If

is pulled Low during a playback

REC

cycle, the playback immediately halts and recording starts from the beginning of the memory.

Holding REC Low after recording will increase standby current consumption.

6.2.2. Edge-trigger Playback

A playback operation starts from the beginning of the memory when PLAYE detects a low

going signal exceeding the specified debounced time. Playback continues until an EOM

marker is encountered. Upon completion of a playback cycle, the device automatically enters

into standby mode.

During playback, a subsequent low going signal will terminate the current playback operation.

Holding this pin Low after playback operation will increase standby current consumption.

6.2.3. Level- trigger Playback

When PLAYL switches from High to Low and stays at Low, a playback starts from the

beginning of the memory until either an EOM marker is reached, then it automatically powers

down.

If PLAYL is pulled High at any time during playback, the playback operation stops

immediately and the device enters into the power-down mode.

6.2.4. LED Operation

The LED is Low during recording, which turns on an LED as a recording indicator. However,

during playback, the LED blinks a few times per second to indicate a playback operation. It

returns to a High when operation stops.

6.2.5. R_OSCOperation

The duration can be varied by changing the value of R_OSC. This means the designer has the

flexibility to choose different sampling frequency, up to 12 KHz, depending upon the needs.

This feature allows frequency shifting where a recorded audio can be played back faster or

slower than normal for special sound effects.

Another feature is a “Pause” function that can be activated by taking the R_OSCresistor to V_CCto

stop playback momentarily, and to resume when the resistor is switched back to ground.

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1...7 8 91011 12 13...23

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