Datasheet > ISD2590T

ISD2590T

更新时间： 2024-01-31 03:52:53

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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技术参数
数据手册

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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

PIN NO.

PIN NAME

FUNCTION

SOIC/ TSOP

PDIP

XCLK

External Clock: The external clock input has an internal pull-down

device. The device is configured at the factory with an internal

sampling clock frequency centered to ±1 percent of specification.

The frequency is then maintained to a variation of ±2.25 percent

over the entire commercial temperature and operating voltage

ranges. If greater precision is required, the device can be clocked

through the XCLK pin as follows:

Part Number

Sample Rate

Required Clock

ISD2560

8.0 kHz

1024 kHz

ISD2575

6.4 kHz

819.2 kHz

682.7 kHz

512 kHz

ISD2590

5.3 kHz

ISD25120

4.0 kHz

These recommended clock rates should not be varied because the

antialiasing and smoothing filters are fixed, and aliasing problems

can occur if the sample rate differs from the one recommended.

The duty cycle on the input clock is not critical, as the clock is

immediately divided by two. If the XCLK is not used, this input

must be connected to ground.

P/R

Playback/Record: The P/R input pin is latched by the falling edge

of the CE pin. A HIGH level selects a playback cycle while a LOW

level selects a record cycle. For a record cycle, the address pins

provide the starting address and recording continues until PD or

CE is pulled HIGH or an overflow is detected (i.e. the chip is full).

When a record cycle is terminated by pulling PD or CE HIGH,

then End-Of-Message ( EOM ) marker is stored at the current

address in memory. For a playback cycle, the address inputs

provide the starting address and the device will play until an EOM

marker is encountered. The device can continue to pass an EOM

marker if CE is held LOW in address mode, or in an Operational

Mode. (See Operational Modes section)

Publication Release Date: May 2003

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Revision 1.0

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