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參數(shù)資料
| 型號： | CF1155SERIES |
| 英文描述： | Melody IC |
| 中文描述： | 和弦IC |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 64K |
| 代理商： | CF1155SERIES |
CF1155 series
NIPPON PRECISION CIRCUITS—5
Power-save Function
As shown in the preceding timing diagrams, the oscillator stops during non-play mode and the pull-down resis-
tance value changes in response to both HIGH-level and LOW-level inputs (power-save pull-down resistor) to
reduce power consumption and extend battery life.
Non-play oscillator stop function
in a standby state. In this state, the current consumption, including input pin pull-down resistor current (I
max), does not exceed 3.3μA.
IH
Power-save pull-down resistor
The resistance of the OSH and LH input pull-down resistor changes in response to the input voltage. The pull-
down resistance is 1M
when the input is HIGH, and the pull-down resistance is 270k
LOW.
when the input is
Furthermore, if a light-dependent resistor (CdS) cell is employed as a switch (the pull-down resistance is max-
imum when the CdS resistance is minimum (light) and the pull-down resistance is minimum when the CdS
resistance is maximum (dark)), the combined resistance can be increased, decreasing current consumption.
Musical Specifications
Maximum program steps
A maximum of 64 steps can be programmed into internal mask-programmable ROM. Each step represents
either a note (sound pitch and length), a rest note, or a jump. The maximum number of jumps is 7.
Note length (including rests)
Eight rhythm values, from sixteenth note to half note, for notes and rests can be programmed, as shown in the
following table.
Also, notes and rests longer than half notes and rests can be created using a tie to connect the notes. This
requires 2 program steps in ROM.
Tempo
The tempo for the standard quarter note can be selected from the following 16 options.
Pitch and scale
The CF1155 series devices support 3.5 octaves ranging from G
form a scale.
3
to D
7
, from which 15 notes can be selected to
Type
Code
0
x
1
e
2
3
q
g
4
5
q .
g .
6
7
h
Note
e .
. .
q + x
g +
q . .
g . .
Rest
Code
q
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
=
697
348
232
174
139
116
99.4
87
77.3
69.6
63.3
58
53.5
49.7
46.4
43.5
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CF1156 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Melody LSIs |
| CF1156_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Melody LSIs |
| CF-1156A-RS | 制造商:IEI Technology Corporation 功能描述:VERSION CHANGED - SEE CF-1156A 制造商:IEI Technology 功能描述:VERSION CHANGED - SEE CF-1156A |
| CF1156SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Melody IC |
| CF1157-000 | 制造商:TE Connectivity 功能描述:FLDWC0311-24-4 |
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