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HT8659 PDF预览

HT8659

更新时间: 2024-01-29 09:23:50
品牌 Logo 应用领域
台湾合泰/盛群 - HOLTEK 动态存储器
页数 文件大小 规格书
15页 856K
描述
Voice Recorder (DRAM)

HT8659 技术参数

是否Rohs认证:不符合生命周期:Contact Manufacturer
Reach Compliance Code:unknown风险等级:5.78
Is Samacsys:N商用集成电路类型:SPEECH SYNTHESIZER WITH RCDG
JESD-30 代码:R-PDIP-T28JESD-609代码:e0
端子数量:28最高工作温度:70 °C
最低工作温度:-20 °C封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP28(UNSPEC)
封装形状:RECTANGULAR封装形式:IN-LINE
电源:5 V认证状态:Not Qualified
最长读取时间:272 s子类别:Audio Synthesizer ICs
最大压摆率:2 mA表面贴装:NO
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子位置:DUALBase Number Matches:1

HT8659 数据手册

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HT8658/HT8659  
Voice Recorder (DRAM)  
Features  
Single power supply: 4.5V~5.5V  
ADM coding algorithm  
DRAM options:  
Data rate options (bits per second):  
32K bps  
22K bps  
16K bps  
4×256K bits  
3×1M bits  
11K bps  
A built-in 2 stage MIC amplifier  
A built-in low pass filter  
A status LED indicator  
Auto playback  
Applications  
Message box  
Toys  
Recorder  
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.  
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.  
Blocks within each chip include a DRAM inter-  
face circuit, signal amplifier, 8 bit ADC and  
internal low pass filter. Encoded data are stored  
Pin Assignment  
AS4  
AS3  
AS5  
AS4  
AS3  
AS5  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
1
1
AS6  
AS6  
2
2
AS2  
AS7  
AS2  
AS7  
3
3
AS1  
AS8  
AS1  
AS8  
4
4
AS0  
AS9  
AS0  
AS9  
5
5
VDD  
AIN  
OSC1  
OSC2  
DATA  
RASB  
WRB  
RESB  
RECB  
PLYB  
LEDB  
VDD  
AIN  
OSC1  
OSC2  
DATA  
RASB  
WRB  
RESB  
RECB  
PLYB  
LEDB  
6
6
7
7
AO  
AO  
8
8
BIAS  
FOUT  
VSS  
BIAS  
VOUT  
VSS  
9
9
10  
11  
12  
13  
14  
10  
11  
12  
13  
14  
CAS1B  
CAS2B  
CAS3B  
CAS1B  
CAS2B  
CAS3B  
HT8658A/8659A  
– 28 DIP  
HT8658B/8659B  
– 28 DIP  
1
26th Sep 96  

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