HT8658 datasheet(1/15 Pages) HOLTEK

부품명	HT8658

상세설명	Voice Recorder (DRAM)

PDF	15 Pages

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제조업체	HOLTEK [Holtek Semiconductor Inc]

홈페이지	http://www.holtek.com

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HT8658/HT8659

Voice Recorder (DRAM)

Pin Assignment

Features

•

Single power supply: 4.5V~5.5V

•

ADM coding algorithm

•

DRAM options:

–

4

×256K bits

–

3

×1M bits

•

A built-in 2 stage MIC amplifier

•

A built-in low pass filter

•

Data rate options (bits per second):

–

32K bps

–

22K bps

–

16K bps

–

11K bps

•

A status LED indicator

•

Auto playback

General Description

The HT8658/HT8659 are single chip CMOS

LSIs using an ADM coding technology. They are

designed for applications on recording sounds.

The HT8658 and HT8659 have almost the same

functions apart from the reset time. The reset

time of the HT8658 has to be over 4 seconds but

of the HT8659 over 2 seconds.

Blocks within each chip include a DRAM inter-

face circuit, signal amplifier, 8 bit ADC and

internal low pass filter. Encoded data are stored

in external DRAMs and played back after the

PLYB pin be triggered. Each IC provides four

kinds of sampling rate to be selected, namely

32K/22K/16K/11K bps (bits per second). A

higher sampling rate results in sounds of better

quality but sacrifices the recording time. With

such a powerful built-in circuit, only few compo-

nents are required for normal applications.

Each IC can be offered in a dice form or 28 pin

dual-in-line package.

AS4

AS3

AS2

AS1

AS0

VDD

AIN

AO

BIAS

FOUT

VSS

CAS1B

CAS2B

CAS3B

AS5

AS6

AS7

AS8

AS9

OSC1

OSC2

DATA

RASB

WRB

RESB

RECB

PLYB

LEDB

AS4

AS3

AS2

AS1

AS0

VDD

AIN

AO

BIAS

VOUT

VSS

CAS1B

CAS2B

CAS3B

AS5

AS6

AS7

AS8

AS9

OSC1

OSC2

DATA

RASB

WRB

RESB

RECB

PLYB

LEDB

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

HT8658A/8659A

– 28 DIP

HT8658B/8659B

– 28 DIP

Applications

•

Message box

•

Recorder

•

Toys

1

26th Sep ’96

유사한 부품 번호 - HT8658

제조업체	부품명	데이터시트	상세설명
Holtek Semiconductor In...	HT8656	646Kb / 11P	Talking Back 5th May 98
	HT8656A	646Kb / 11P	Talking Back 5th May 98
	HT8656B	646Kb / 11P	Talking Back 5th May 98
	HT86576	368Kb / 39P	Voice Synthesizer 8-Bit MCU May 6, 2004

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유사한 설명 - HT8658

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Macronix International	MX93521	290Kb / 57P	ALL DIGITAL VOICE RECORDER MACHINE BASED ON THE MX93521 VOCODER CHIP
OKI electronic componet...	MSM6679A-110	259Kb / 50P	SI/SD Voice Recognizer, Recorder/Player, and Speech Synthesizer
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TT Electronics.	DS7001	369Kb / 3P	Nanodac Recorder
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M-System Co.,Ltd.	MSRPAC10	1,020Kb / 10P	PC Recorder Series PC RECORDER SOFTWARE PACKAGE

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HT8658 데이터시트(PDF) 1 Page - Holtek Semiconductor Inc

HT8658 데이터시트(HTML) 1 Page - Holtek Semiconductor Inc

유사한 부품 번호 - HT8658

유사한 설명 - HT8658

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