Datasheet > ISD2590T

ISD2590T

更新时间： 2024-02-11 13:38:44

品牌	Logo	应用领域
华邦 - WINBOND		可编程只读存储器电动程控只读存储器电可擦编程只读存储器按钮和信息提示光电二极管商用集成电路
页数	文件大小	规格书
42页	372K
描述
Consumer IC

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ISD2590T 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.83
Is Samacsys：	N	Base Number Matches：	1

ISD2590T 数据手册

ISD2560/75/90/120

7. FUNCTIONAL DESCRIPTION

7.1. DETAILED DESCRIPTION

Speech/Sound Quality

The Winbond’s ISD2500 series includes devices offered at 4.0, 5.3, 6.4, and 8.0 kHz sampling

frequencies, allowing the user a choice of speech quality options. Increasing the duration within a

product series decreases the sampling frequency and bandwidth, which affects the sound quality.

Please refer to the ISD2560/75/90/120 Product Summary table below to compare the duration,

sampling frequency and filter pass band.

The speech samples are stored directly into the on-chip nonvolatile memory without any digitization

and compression associated like other solutions. Direct analog storage provides a very true, natural

sounding reproduction of voice, music, tones, and sound effects not available with most solid state

digital solutions.

Duration

To meet various system requirements, the ISD2560/75/90/120 products offer single-chip solutions at

60, 75, 90, and 120 seconds. Parts may also be cascaded together for longer durations.

TABLE 1: ISD2560/75/90/120 PRODUCT SUMMARY

Part Number

Duration

Input Sample

Typical Filter Pass

(Seconds)

Rate (kHz)

Band * (kHz)

ISD2560

ISD2575

ISD2590

ISD25120

8.0

6.4

5.3

4.0

3.4

2.7

2.3

1.7

120

3db roll-off point

EEPROM Storage

One of the benefits of Winbond’s ChipCorder^®technology is the use of on-chip nonvolatile memory,

providing zero-power message storage. The message is retained for up to 100 years typically without

power. In addition, the device can be re-recorded typically over 100,000 times.

Microcontroller Interface

In addition to its simplicity and ease of use, the ISD2500 series includes all the interfaces necessary

for microcontroller-driven applications. The address and control lines can be interfaced to a

microcontroller and manipulated to perform a variety of tasks, including message assembly, message

concatenation, predefined fixed message segmentation, and message management.

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