參數(shù)資料
型號(hào)： W52902
文件頁(yè)數(shù)： 5/6頁(yè)
文件大?。?/td> 93K
代理商： W52902
W529XX
Publication Release Date: April 1997
- 5 -
Revision A3
DC Characteristics, continued
PARAMETER
SYM.
CONDITIONS
LIMITS
UNIT
MIN.
TYP.
MAX.
Oscillation Frequency
F
OSC
R
OSC
= Typ.
1.35
1.5
1.65
MHz
Oscillation Frequency
Deviation by Voltage
Drop
F
F
OSC
OSC
F(3V)
F(2.4V)
F(3V)
0
4
7.5
%
Input Debounce Time
T
DEB1
F
OSC
= 1.5 MHz
20
30
40
mS
μ
S
T
DEB2
160
240
320
Note: R
OSC
= Typ. = 120 K
.
TYPICAL APPLICATION CIRCUIT
RESET
OSC
SPK
TEST
TG1
TG2
TG3
TG4
IO1
V
IO2
IO3
IO4
IO5
IO6
IO7
IO8/
FTEST
W529XX
V
+2.4 to 5.5V
V
R
R
T'x
Speaker
8 ohm
1/4 watt
C
GND
R
LED
DD
SS
DD
OSC
S
S
Notes:
1. In principle, the playing speed determined by R
OSC
should correspond to the sampling rate during the coding phase.
The playing speed may be adjusted by varying R
OSC
, however.
2. R
S
is an optional current-dividing resistor. If R
S
is added, the resistance should be between 470 and 750
.
3. C
S
is optional.
4. The DC current gain
β
of transistor 8050 ranges from 120 to 160.
5. All unused trigger pins can be left open because of their internal pull-high resistance.
6. Typical R
OSC
is 120 K
.
7. R is used to limit the current on the LED.
8. No warranty on mass production.
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