NPC CF1156 Melody lsi Datasheet

CF1156 series
Melody LSIs
OVERVIEW
The CF1156 series are CMOS melody LSIs with built-in LED driver that, together with a battery and piezoelectric buzzer, operate in one of 3 melody modes determined by input level or bonding options. They also feature an oscillator stop function in non-play mode and a variable pull-down resistance function that responds to
input levels in order to reduce power consumption, reduce cost, and extend battery life, making them ideal in a
wide range of applications including greeting cards and toys.
FEATURES
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LED direct drive
Requires few external components
2.0 to 3.6V wide operating voltage range
Low power consumption
3 melody modes (bonding option)
Oscillator stop function in non-play mode
Power saving pull-down resistor built-in
RC oscillator circuit
Power-ON initialization function
2 VSS pad connections
Wide pitch dynamic range (G3 to D7)
Chip form
ORDERING INFORMATION
Device
Package
CF1156
Chip form
SEIKO NPC CORPORATION —1
CF1156 series
PAD LAYOUT and COORDINATES
(Unit: µm)
Number
VDD
LO
3
2
4
T2
5
T1
6
HA1156
TC
(0,0)
(1230,1230)
BO
1
11
7
8
9
VSS TO OSH
VSS
10
LH
Chip size: 1.23 × 1.23mm
Chip thickness: 300 ± 30µm
T1, T2, TC, and TO bonding is not required.
Pad
Pad dimensions (Unit: µm)
X
Y
1
BO
930
1075
2
LO
529
1075
3
VDD
155
1075
4
TC
155
887
5
T2
155
608
6
T1
155
420
7
VSS
223
155
8
TO
486
155
9
OSH
750
155
10
LH
1041
155
11
VSS
1075
420
PAD DESCRIPTION
Name
Function
OSH, LH
Melody mode control inputs. Built-in pull-down resistors mean LOW-level signals are obtained when inputs are open circuit. The
resistance of the pull-down resistor varies with the applied voltage, as described in the Electrical Characteristics.
LO
LED drive output, HIGH level during non-play mode.
BO
Piezoelectric speaker driver output. LOW level output during non-play mode and during musical rest notes. HIGH level output
during gaps between melody notes.
VDD
Supply. The rear surface of the chip is VDD level.
VSS
Ground
T1, T2, TC
TO
Test inputs. Pull-down resistor built-in.
Test output. The oscillator frequency (typ. 50kHz) is output for monitoring purposes.
SEIKO NPC CORPORATION —2
CF1156 series
SPECIFICATIONS
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
VDD − VSS
−0.3 to 5.0
V
Input voltage range
VIN
VSS − 0.2 to VDD + 0.2
V
Operating temperature range
Topr
−20 to 80
°C
Storage temperature range
Tstg
−65 to 150
°C
Supply voltage range
Condition
Electrical Characteristics
Ta = 25°C, VSS = 0V, VDD = 3.0V
Rating
Parameter
Symbol
Condition
Unit
min
typ
max
2.0
3.0
3.6
V
Operating voltage
VDD
Current consumption1
IDD1
Non-play mode
–
0.01
0.6
µA
Current consumption2
IDD2
Melody modes: BO, LO open
–
100
200
µA
LH, OSH LOW-level input voltage
VIL
–
–
VSS + 0.2
V
LH, OSH HIGH-level input voltage
VIH
VDD – 0.2
–
–
V
LH, OSH LOW-level input current
IIL
VIL = 0.8V
0.7
9.0
18
µA
LH, OSH HIGH-level input current
IIH
VIH = 3.0V
0.7
9.0
18
µA
BO LOW-level output current
IOL1
VOL = 1.0V
4.0
–
–
mA
BO HIGH-level output current
IOH1
VOH = 2.0V
4.0
–
–
mA
LO LOW-level output current
IOL2
VOL = 1.0V
10
–
–
mA
LO HIGH-level output current
IOH2
VOH = 2.0V
8
–
–
mA
TO oscillator frequency
fOSC
35
50
65
kHz
TO oscillator start voltage
VDOB
–
–
2.0
V
TO oscillator stop voltage
VDOS
–
–
2.0
V
1. Measurement circuit
A
VDD
3.0V
VSS
2. Measurement circuit
A
3.0V
VDD
LH
VSS
SEIKO NPC CORPORATION —3
CF1156 series
FUNCTIONAL DESCRIPTION
LED Indicator
The LED flashes during melody play mode only, at intervals representing a 1/8 musical note length.
LED flash
LED flash interval
= 1 cycle
Note: The LED flashes at intervals equal to a 1/8 musical note,
regardless of the melody note length being output.
Play
BO
Non-play
VDD
LO
Active:LOW
VSS
Melody Modes
The CF1156 series melody mode is determined by the bonding options and levels on the mode control inputs
OSH and LH. When either OSH or LH or both go HIGH (VDD), the corresponding melody mode is selected as
shown in the following table.
OSH
LH
Melody mode
HIGH
HIGH
Level hold 1
LOW
HIGH
Level hold 2
HIGH
LOW
One-shot
LOW
LOW
Non-play
Level hold 1
When both OSH and LH go HIGH, melody play starts and continues while both are held HIGH. When both
inputs go open circuit or LOW, melody play stops, even if during mid melody.
Note that both OSH and LH inputs should be switched simultaneously using a single switch. If there is timing
difference between the two inputs, then LH has priority.
OSH
LH
BO
1 TUNE
REPEAT
REPEAT
Oscillator
Pull-down resistance
(2-pin parallel resistance)
45kΩ
150kΩ
45kΩ
SEIKO NPC CORPORATION —4
CF1156 series
Level hold 2
When LH goes HIGH, a single melody play starts. Melody play continues until the single melody ends or LH
goes open circuit or LOW, whichever occurs first.
LH
BO
1 TUNE
Oscillator
Pull-down resistance
90kΩ
300kΩ
90kΩ
300kΩ
90kΩ
One-shot
When OSH goes HIGH, a single melody play starts. Melody play continues until the melody ends, even if OSH
goes open circuit or LOW mid melody. However, if the OSH input goes HIGH again during melody play, the
melody play restarts from the beginning.
OSH
From the begining
BO
1 TUNE
1 TUNE
Oscillator
Pull-down resistance
90kΩ
90kΩ
90kΩ
300kΩ
300kΩ
90kΩ
90kΩ
300kΩ 300kΩ
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CF1156 series
Power-save Function
As shown in the preceding timing diagrams, the oscillator stops during non-play mode and the pull-down resistance 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
When melody play ends, regardless of the state of either LH or OSH, the internal oscillator stops and is placed
in a standby state. In this state, the current consumption, including input pin pull-down resistor current (IIH
max), does not exceed 18.6µA.
Power-save pull-down resistor
The resistance of the OSH and LH input pull-down resistor changes in response to the input voltage. The pulldown resistance is 300kΩ when the input is HIGH, and the pull-down resistance is 90kΩ when the input is
LOW.
Furthermore, if a light-dependent resistor (CdS) cell is employed as a switch (the pull-down resistance is maximum 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.
Code
Type
0
1
2
3
4
5
6
7
Note
Rest
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.
Code
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
Pitch and scale
The CF1156 series devices support 3.5 octaves ranging from G3 to D7, from which 15 notes can be selected to
form a scale.
SEIKO NPC CORPORATION —6
CF1156 series
TYPICAL APPLICATION
The circuits below represent the standard connections for CF1156 series devices.
VDD
LO
BO
VDD
LO
BO
Light
VSS OSH
LH
VSS
VSS OSH
LH
VSS
CdS
Circuit 1
VDD
LO
VSS OSH
Circuit 3
BO
LH
VSS
Circuit 2
Note 1: There are 2 VSS pads, and either pad can be used.
Note 2: Circuit 1 is for one-shot mode, circuit 2 for level hold 1/2 modes, and circuit 3 for CdS connection.
The bonding options for the above circuits is shown in the following table.
OSH
LH
Yes
Yes
Level hold 1
Yes
Level hold 2
Yes
Melody mode
One-shot
SEIKO NPC CORPORATION —7
CF1156 series
Please pay your attention to the following points at time of using the products shown in this document.
The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on
human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such
use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and
harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right
to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that
the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties.
Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document.
Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products,
and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or
modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in
compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested
appropriately take steps to obtain required permissions or approvals from appropriate government agencies.
SEIKO NPC CORPORATION
15-6, Nihombashi-kabutocho, Chuo-ku,
Tokyo 103-0026, Japan
Telephone: +81-3-6667-6601
Facsimile: +81-3-6667-6611
http://www.npc.co.jp/
Email: [email protected]
NC0002CE
2006.04
SEIKO NPC CORPORATION —8
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