参数资料
型号: YMF721-S
元件分类: 音频合成
英文描述: SPEECH SYNTHESIZER, PQFP100
封装: SQFP-100
文件页数: 34/41页
文件大小: 324K
代理商: YMF721-S
YMF721
July 10, 1997
- 4 -
Others : 39 pins
Pin name
pins
I/O
Type
Size
Function
5V/3V
1
I
CMOS
-
Selection of power supply
/RESETSEL
1
I+
TTL
-
RST signal polarity control pin
(When this pin is at "L", RST is active at "L".)
/PDOUT
1
O
CMOS
2mA
Power down control output
XI
1
I
CMOS
2mA
Crystal oscillator connection or master clock input
(33.8688 MHz)
XO
1
O
CMOS
2mA
Crystal oscillator connection pin
N.C.
34
-
To be open at normal use.
LSI test pins : 21 pins
Pin name
pins
I/O
Type
Size
Function
/TESTA
1
I+
TTL
-
To be open at normal use.
/TESTB
1
I+
TTL
-
To be open at normal use.
/TEST
1
I+
TTL
-
To be open at normal use.
/TEST2
1
I+
TTL
-
To be open at normal use.
/TEST3
1
I+
TTL
-
To be open at normal use.
T7-0
8
O
CMOS
2mA
To be open at normal use.
TD7-0
8
I/O
CMOS
2mA
To be open at normal use.
Power supply, ground : 11 pins
Pin name
pins
I/O
Type
Size
Function
VDD
4
-
Power supply (put on +5.0 V or +3.3V)
VSS
7
-
Ground
Total : 100 pins
Note : I+ : Input pin with built-in pull-up resistor, OD : Open drain output pin
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