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參數(shù)資料
| 型號： | EM20055A |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | Single Chip Voice Synthesizer IC(帶內置掩膜ROM的單片語音合成IC) |
| 中文描述： | 單芯片語音合成器集成電路（帶內置掩膜ROM的的單片語音合成芯片） |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 56K |
| 代理商： | EM20055A |
7
* This specification are subject to be changed without notice.
4.19.1996
EM20055A
3 SEC. VOICEYNTHESIZER IC
E). Pull down resister
To prevent noise interference and to provide cds trigger interface, the TR pins of EM20055A provide shifting
pull down resister, The shifting resister is dependent on the level of TR pin:
TR pin tied to
V
DD
: R= 1 M ohm
TR pin tied to
V
SS
: R= 270 K ohm
F). Debounce
To prevent mistaken action due to bounce of trigger switch, any bounce pulse shorter than 20 ms will be
ignored by the debounce circuit of EM20055A.
ABSOLUTE MAXIMUM RATINGS
Items
Symbol
Min.
Max.
Unit
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
V
DD
-V
SS
Vin
Top
Tstg
-0.3
V
SS
-0.3
0
-55
+6.0
V
DD
+0.3
50
+125
V
V
°
C
°
C
ELECTRICAL CHARACTERISTICS
(T
A
=25
°
C, Unless otherwise specified)
Items
Symbol
Min.
Typ.
Max.
Unit
Conditions
Operating Voltage
Stand-by Current
Operating Current
Input Current of TR1-4
Output Current of Vo (full scale)
V
DD
Idds
Iddo
Iih
Ivo
2.7
-
-
1.5
2.5
-
-
5.0
1.0
150
10
6.5
V
μ
A
μ
A
μ
A
mA
V
DD
=3V
V
DD
=3V, no load
V
DD
=3V,V
in
=3V
V
DD
=3V,Vo=0.7V
Volume=step 4
V
DD
=3V, Vo=0.7V
100
3.0
3.6
Output Current of
ACT & STP
Output Current of FSH
External Resister
Oscillation
Io
0.5
1.0
-
mA
Io
R
Fosc
-4
-
-
-8
1
-
-
-
mA
M
Hz
V
DD
=3V, Vo=1.35V
192k
R typical
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