SM1155 データシートの表示（PDF） - Nippon Precision Circuits
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SM1155 Datasheet PDF : 7 Pages
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SM1155 series
PAD DESCRIPTION
Number
1
2
Name
T2
T1
3
TG
i/o
Function
– Test pins (must be open)
Melody mode control input
S M 1 1 5 5 ×××1 S
Level hold 1
ip1
H S M 1 1 5 5 ×××2 S
Level hold 2
S M 1 1 5 5 ×××3 S
One-shot
L/open S M 1 1 5 5 ×××1S/ 2S/ 3S Non-play
4
VSS
– Ground
5
6
OUT
OUT
o
Piezoelectric speaker driver outputs. Both pins are LOW in non-play mode. OUT is LOW and O U T is HIGH
during output for a musical rest note. Both pins are HIGH during the gap between musical notes.
7
VDD
– Supply. The rear surface of the chip is V D D level.
8
TC
– Test pins (must be open)
1. Built-in pull-down resistor (the resistance of the pull-down resistor varies with the applied voltage, as described in the Electrical Characteristics).
SPECIFICATIONS
Absolute Maximum Ratings
Parameter
Supply voltage range
Input voltage range
Operating temperature range
Storage temperature range
Symbol
VDD −VSS
V IN
Topr
T stg
Condition
Rating
Unit
−0.3 to 5.0
V
VSS − 0.2 to VDD + 0.2
V
−20 to 80
°C
−55 to 125
°C
Electrical Characteristics
Ta = 25°C, VSS = 0V, VDD = 1.5V
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
Operating voltage
Current consumption1
Current consumption2
V DD
1.2
1.5
3.6
V
ID D 1
Non-play mode
–
0.01
0.3
µA
ID D 2 Melody modes: O U T, O U T open
–
25
50
µA
TG LOW -level input voltage
V IL
–
–
VSS + 0.2
V
TG HIGH-level input voltage
V IH
VDD – 0.2
–
–
V
TG LOW -level input current
IIL
V IL = 0.4V
1.4
3.0
6.0
µA
TG HIGH-level input current
II H
V IH = 1.5V
1.4
3.0
6.0
µA
O U T, O U T LOW -level output current
IO L
VOL = 0.75V
2.0
–
–
mA
OUT, OUT HIGH-level output current
IO H
VOH = 0.75V
2.0
–
–
mA
Internal oscillator frequency
fO S C
f0 = 50kHz
–20
–
+20
%
1. Measurement circuit
2. Measurement circuit
A VDD
A VDD
1.5V
VSS
1.5V
TG VSS
NIPPON PRECISION CIRCUITS—2
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