SM1350AAQM data sheet(English)

SM1350AAQM
High Tone Quality Melody IC
OVERVIEW
The SM1350AAQM is single-chip high tone quality melody IC, fabricated using NPC’s Molybdenum-gate CMOS
process. Melodies are selected in serial or binary (parallel) mode, 6 programmable melodies are stored, and the high
tone quality melody is output by how to specify the user. It is making this IC ideal for mechanical clocks and similar
applications where high tone quality output is demanded.
FEATURES
■ Basic Functions
PINOUT
(Top view)
• 4.0MHz oscillator frequency
• Power-save function
- Oscillator stopped when no output
- S0 to S3, MODE, LH pull-up resistors open
• A-class output
• Chattering prevention circuit (STN, STOP, S0 to S3)
• 10-bit D/A converter current-summing
■ Sound Generator Functions
• DWS (dual wave synthesis) sound generators
• 4 simultaneous sounds for 4 tones
■ Melody Functions
1
VDD
S0
24
S1
S2
XT
XTN
TO
S3
T3N
T2N
MODE
T1N
ENDN
EBUSYIN
LH
STOP
SP
SPN
STN
BUSYN
CT
ICN
13
12
VOL
VSS
• 6 programmable melodies
• Level hold/one-shot melody modes
• Serial/binary (parallel) select modes
■ Control Signal Outputs
PACKAGE DIMENSIONS
(Unit : mm)
• BUSYN signal : LOW during melody output
• CT signal : pulse output synchronizing with selected
notes or rests
■ 2.4 to 5.5V supply voltage
■ Molybdenum-gate CMOS
■ Package : 24-pin SSOP
ORDERING INFOMATION
Device
Package
SM1350AAQM
24 pin SSOP
SEIKO NPC CORPORATION - 1
SM1350AAQM
BLOCK DIAGRAM
S3
S2
S1
S0
MODE
LH
STOP
STN
TO
T1N
T2N
T3N
Wave ROM
Arithmetic block Circuit
Parameter ROM
+
DAC
SP
SPN
VOL
Input Circuit
Control Circuit
EBUSYIN
ENDN
BUSYN
CT
ICN
XT
XTN
Oscillator
Score ROM
VDD
VSS
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SM1350AAQM
PIN DESCRIPTION
No.
Pin Name
I/O
State*1
1
VDD
-
-
2
S0
3
S1
4
S2
I
SU
5
S3
6
MODE
I
SU
7
LH
I
SU
8
STOP
I
U
9
STN
I
U
Melody start control
10
BUSYN
O
C
Busy output signal. LOW when a melody is output.
11
CT
O
C
External control pulse output
12
ICN
I
U
Initialization clear input
13
VSS
-
-
Ground pin
14
VOL
I
-
Volume adjusts control. Volume adjusted using an external resistor.
15
SPN
O
P
VOL current output
16
SP
O
P
10-bit D/A converter output
Description
Supply pin
Binary select mode : Phrase select pins.
Serial select mode : S0 and S1 control melody output.
Melody select mode control. Binary mode when LOW, and serial
mode when HIGH.
Melody output mode control. One-shot when LOW, and level hold
when HIGH.
One-shot melody mode : Melody output stop control.
Level hold melody mode : invalid input.
It is not necessary to use it usually. It should connect VDD or OPEN.
17
EBUSYIN
I
U
When this terminal is made LOW, BUSYN compulsorily becomes
LOW. A pop sound might be emitted.
18
ENDN
O
C
Pulse signal when melody output ends
19
T1N
I
U
20
T2N
I
U
21
T3N
I
U
22
TO
O
C
Test signal output. 62.5kHz output when not in test mode.
23
XTN
O
-
Oscillator output
24
XT
I
-
Oscillator input
Test signal inputs
This terminal cannot be used. It should connect VDD or OPEN.
*1. U : pull-up resistor connection
SU : pull-up resistor connection only when melody output starts
(Function for current consumption decrease when driving with battery. Only when the terminal is read, the pull-up
resistor is connected.)
P : p-channel open drain
C : complementary output
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SM1350AAQM
SPECIFICATIONS
Absolute Maximum Ratings
VSS=0V
Parameter
Symbol
Rating
Unit
Supply voltage
VDD
-0.3 to 7.0
V
*1
VIN
-0.3 to VDD+0.3
V
VOUT
-0.3 to VDD+0.3
V
Operating temperature
TOPR
-20 to 80
C
Storage temperature
TSTG
-40 to 125
C
Allowable power dissipation
PW
650
mW
Input voltage
Output voltage
*1
Allowable power dissipation[mW]
*1. They are range of the voltage where IC destroys and the characteristics degradation and the reliability decrease are not
caused.
650
500
400
300
200
100
100mW is not exceeded in usual use.
-20
0
25
50
150
80
Temperature[℃]
Recommended Operating Conditions
VSS=0V
Rating
Parameter
Symbol
Supply voltage
VDD
2.4
5.5
V
Operating temperature
Ta
-20
80
C
MIN
TYP
MAX
Unit
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SM1350AAQM
DC Characteristics
Ta=25C,VDD=3.0V or 5.0V,VSS=0V,fO=4.0MHz unless otherwise noted.
Rating
Parameter
Pin Name
Symbol
Condition
Unit
MIN
Minimum operating supply voltage*1
VDD,VSS
VMIN
Maximum operating supply voltage*1
VDD,VSS
VMAX
VDD
ISTBY
Standby current consumption
VDD
IDD
5.5
S0~S3,MODE,
V
V
No melody output
1.0
VDD=3.0V
3.5
VDD=5.0V
9.5
µA
mA
SP,SPN,ENDN,
open
HIGH-level input voltage
MAX
2.4
BUSYN,CT,TO,
Operating current consumption
TYP
VIH
VDD-0.3
VDD
V
VSS
VSS+0.3
V
LH,STOP,STN,
LOW-level input voltage
ICN,EBUSYIN
VIL
HIGH-level input current
S0~S3,MODE,
IIH
VIH=VDD
IIL
VIL=VSS
LH,STOP,STN,
ICN,EBUSYIN
LOW-level input current
HIGH-level output current1
BUSYN,CT,TO
LOW-level output current1
HIGH-level output current2
ENDN
LOW-level output current2
Output current3*2
SP,SPN
VDD=3.0V
1
VDD=5.0V
1
VDD=3.0V
10
20
VDD=5.0V
30
50
µA
µA
IOH1
VOH1=VDD-0.7
2.0
mA
IOL1
VOL1=VSS+0.7
2.0
mA
IOH2
VOH2=VDD-0.7
3.0
mA
IOL2
VOL2=VSS+0.7
3.0
mA
IOH3
VOH3=VSS+0.7
VDD=3.0V
4.0
VDD=5.0V
7.7
mA
*1. Supply voltage ratings shown are with oscillator running and all functions operating normally.
*2. Output current when 20kΩ volume control resistor is connected to VOL, and all D/A converter bits ON, measured using the
following circuit.
VDD
SP,SPN
VDD
A
VOL
20kΩ
0.7V
VSS
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SM1350AAQM
AC Characteristics
Ta=25C,VDD=3.0V or 5.0V,VSS=0V unless otherwise noted.
Parameter
Symbol
Rating
Condition
MIN
Initialization clear time
tICW
ICN-STN time to spare
tSS
STN pulse width
TYP
Unit
MAX
1.0
µsec
10
µsec
tSTW
81921
*1
fXTI
3.8
4.0
4.2
MHz
*1
RXTI
40
50
60
%
Oscillator stop time
tXEN
180224
196608
µsec
D/A converter rise delay time
tDAST
40000
163842
µsec
D/A converter fall delay time
tDAEN
180224
196608
µsec
Standby chattering prevention time
tCH1
163842
µsec
Oscillator chattering prevention time
tCH2
65537
81921
µsec
Melody select chattering prevention time
tCH3
65536
131072
µsec
MODE、LH read timing
tMR
10000
15875
31750
µsec
S0 to S3 read timing
tSR
10000
31875
63750
µsec
tBYST
4096
8192
16384
µsec
8192
µsec
32768
µsec
Clock frequency
Clock duty cycle
BUSYN fall delay time
BUSYN rise delay time
*2
STN,STOP
Time after oscillator start
STN,STOP
S0~S3
Applied level hold melody mode
40000
µsec
81921
81921
tBYEN
Melody start delay time
tPYST
8192
STOP pulse width
tSTPW
81921
ENDN delay time
tEDST
ENDN pulse width
tEDW
8
16384
µsec
16
8192
µsec
32
µsec
*1. These are ratings when clock signals are input from the outside to XT pin.
*2. The time taken for fast damping to reduce the envelope to 0 level.
Note. Input signal should be risen or fallen to the following time or less.
Input Signal
90%
90%
10%
10%
1ms
1ms
SEIKO NPC CORPORATION - 6
SM1350AAQM
FUNCTIONAL DESCRIPTION
Chattering Prevention
STN, STOP chattering prevention function
(a) Oscillator stopping (Standby Mode)
The oscillator starts when STN goes from HIGH to LOW in standby mode. Input data is received and melody data
output starts 81.9ms after the oscillator start if STN is LOW. SM1350 dose not operate even if the signal is input to
STOP in standby mode.
61.0Hz
81.9ms
81.9ms
STN
OSC
Input Reception
Melody Output
(SP pin)
Figure 1. STN,STOP chattering prevention timing (oscillator stopping)
(b) Oscillator running
Input data is considered valid 81.9ms after STN and STOP have last changed state. Input data is considered invalid
for intervals less than 65.5ms.
61.0Hz
65.5ms
81.9ms
STN or
STOP
Input Reception
Figure 2. STN,STOP chattering prevention timing (oscillator running)
SEIKO NPC CORPORATION - 7
SM1350AAQM
S0 to S3 chattering prevention function
In binary select mode, S0 to S3 are sampled in sync with the 15.26Hz clock during level-hold melody output. The
chatter prevention function compares the data sampled 65.5ms after a data transition on S0 to S3 with the data sampled
65.5ms before the data transition. If the 2 data samples are the same, then the data transition is considered invalid.
However, if they are not the same indicating a true transition has occurred, melody output stops and only restarts again
after 2 consecutive identical melody select data samples occur. Note that except for binary select mode with level hold
output, the S0 to S3 chattering prevention circuit is disabled.
15.26Hz
S0 to S3
#N
#N
Melody Output
(SP pin)
#M
#N
65.5
ms
#S
#M
65.5 65.5
ms ms
#S
65.5 65.5 65.5
ms ms ms
Figure 3. S0~S3 chattering prevention timing
Initialization
When power on and ICN goes LOW, all pins and internal states are initialized to the states shown below. It is
recommended to initialize before melody output for steady operation.
■ Output pins
• SP, SPN
: Open
• ENDN
: VDD
• CT
: VSS
• BUSYN
: VDD
■ Serial melody counter
Reset to first melody (S0 to S3 all 0)
■ Oscillator circuit
Stopped
SEIKO NPC CORPORATION - 8
SM1350AAQM
Melody Output Circuit
The volume control circuit comprises a P-channel current-summing D/A converter, a built-in constant-current source
and an external variable resistor.
Output circuit (A-class)
The A-class output circuit comprises a single 10-bit D/A converter with current output on SP. The D/A converter is set
ON immediately after the oscillator starts, and the current output that results is the center point above and below which
the converter current output varies in response to the waveform amplitude. The SP output is current-to-voltage
converted for connection to audio equipment or amplifiers. The 4 sound generator waveforms are time multiplexed, so
an integrating circuit must be connected between SP and the amplifier to recover the signal.
VDD
VDD
BUSYN
AMP
SPEAKER
SP
VSS
VOL
VSS
Figure 4. Output circuit (A-class)
Pin Functions
STN pin
Melody start signal. Melody starts when LOW is detected.
One-shot melody output (LH=LOW)
One-shot melody is a melody control that stops melody after it play to the last of the melody when there is a start trigger.
When STN goes LOW during melody output, the melody specified with S0 to S3 is played
STN
S0 to S3
#N
#M
Melody Output
(SP pin)
#N
#M
Figure 5. One-shot mode
One-shot mode repeat function
In one-shot melody mode, the output repeats the same melody while STN is LOW. When STN goes HIGH, the output
continues until the end of the currently playing melody and then stops.
STN
Melody Output
(SP pin)
#N
#N
#N
Figure 6. One-shot melody repeat timing
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SM1350AAQM
Level hold melody output (LH=HIGH)
Level hold melody output is played when STN is LOW, and it goes HIGH, it is melody control which stops in the
middle of melody. When either of S0 to S3 changes during melody output, it restarts from the head of the melody newly
selected.
* This function is effective only while the level hold melody output in the binary select mode.
STN
S0 to S3
#M
#N
Melody Output
(SP pin)
#M
#N
Figure 7. Level hold mode
Binary select mode (MODE=LOW)
A melody of 1 to 6 is selected according to the condition (0000 to 1111) of S0 to S3.
Serial select mode (MODE=HIGH)
In serial select mode, the next melody is selected by cycling through the melodies in the order N→N
1…N-1→N when the STN input goes LOW. Note that when melody output is stopped using the STOP input, the
melody-select counter increments.
One-shot melody output (LH=LOW)
STN
Melody Output
(SP pin)
#N
#N+1
#N+2
Figure 8. One-shot mode (serial select)
Level hold melody output (LH=HIGH)
STN
Melody Output
(SP pin)
#N
#N+1
#N+1
Figure 9. Level hold mode (serial select)
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SM1350AAQM
The melody selection in serial mode is controlled by S0 and S1 as shown in the following table. The states of S0 and S1
are read in immediately after startup and the change of S0 and S1 during melody output is invalid.
S1
S0
Melody counter
LOW
-
Increments when melody output stops
HIGH
LOW
No increment
HIGH
HIGH
Increments when melody output starts
Stable 1. S0, S1 resistor and melody counter
STN
S1
S0
Selection Counter
#N
Melody Output
(SP pin)
#N
#N+1
#N+2
#N+1
#N+2
#N+2
#N+2
Figure 10. S0, S1 melody output control timing
STOP pin
One-shot output mode stops when STOP goes from HIGH to LOW. The STOP input is ignored in level hold output
mode and is also ignored in one-shot mode when STN is LOW. Note that even when STOP is LOW, STN has higher
priority.
CT pin
A pulse in sync with selected notes or rests is output on CT. 16.4ms pulse is output when a note or rest occurs for which
the corresponding CT data in score ROM is set to 1.
CT DATA
q
e e q.
1
1
0
e q
1
1
0
CT
Figure 11. CT pulse mode output
Fast Damping
When melody output stops, the D/A converter output amplitude dose not fall to zero instantaneously, instead the output
converges to zero within a maximum of 8.2ms to prevent noise being generated. Also, when one-shot melody output
mode is retriggered, melody output restarts after the fast damping interval. When melody out is stopped by ICN input, it
instantaneously becomes 0 level.
STOP
Melody Output
(SP pin)
8.2msec
Figure 12. Fast damping timing
SEIKO NPC CORPORATION - 11
SM1350AAQM
TIMING DIAGRAMS
One-shot Melody Mode
tICW
ICN
tSS
tSTW
STN
Oscillation start time:It decides by the used crystal characteristics.
OSC
tCH1
tMR
MODE
LH
tSR
S0 to S3
#N
BUSYN
tBYST
tDAST
Melody Output
(SP pin)
ENDN
#N
tPYST
VDD
VSS
Figure 13. One-shot mode (standby to melody start)
tSTW
STN
tSTPW
STOP
tCH2
tMR
MODE
LH
tSR
S0 to S3
#N
tPYST
Melody Output
(SP pin)
#M
tCH2
tDAEN
#N
tBYEN
BUSYN
tEDW
ENDN
OSC
tEDST
tXEN
Figure 14. One-shot mode (melody stop by STOP pin)
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SM1350AAQM
Level Hold Melody Mode
tICW
ICN
tSS
STN
Oscillation start time:It decides by the used crystal characteristics.
OSC
tCH1
tMR
MODE
LH
tSR
S0 to S3
#N
BUSYN
tBYST
tDAST
Melody Output
(SP pin)
ENDN
#N
tPYST
VDD
VSS
Figure 15. Level hold mode (standby to melody start)
STN
S0 to S3
#M
#N
tCH3
Melody Output
(SP pin)
#M
tCH2
tDAEN
#N
tBYEN
BUSYN
tEDW
ENDN
OSC
tEDST
tXEN
Figure 16. Level hold mode (melody stop by STN Low → High)
SEIKO NPC CORPORATION - 13
SM1350AAQM
TYPICAL APPLICATIONS
VDD
S0
C2
0.1μF
3 to 5V
TO
S2
T3N
S3
T2N
LH
STOP
+
C1
100μF
XTN
S1
MODE
CPU
XT
STN
MURATA
CSTLS
4M00G53
R1
4.7kΩ
Darlington Tr.
hFE>2000
4MHz
Max 400mA
+
CD
CG
C4
1000μF
T1N
ENDN
EBUSYIN
SP
BUSYN
SPN
CT
VOL
ICN
VSS
8Ω
C5
R3
0.47μF 4.7kΩ
C6
R2
VR
200kΩ 500Ω 0.01 to 0.1μF
R4
10kΩ
SEIKO NPC CORPORATION - 14
SM1350AAQM
ROM SPECIFICATIONS
Sound Supply
No.
MAIN Wave
Pattern Name
Sound Name
SUB Wave
Pattern Name
0
p Rhodes
sin
Rhodes M
1
Rhods1
sin
Rhodes M
2
Rhodes
sin
Rhodes M
3
A.GtrL
A.GuitrL
harpsic2
4
StrinM
sin
Strings1
5
StrinL
sin
Strings1
6
Bell
chime22
chime22
7
1stFlute
Flute
Flute
8
E.Piano1
Flute
orglm
9
Rhodes
Flute
Rhodes M
A
Flute1
Flute
Flute
B
STRINGSA
sin
Strings1
C
A.GtrL’
A.GuitrL
harpsic2
D
E.Piano2
Flute
orglm
E
Strings1
sin
Strings1
F
E.Piano
Flute
orglm
Melody name, Tempo, Sound assign, Time interval mode, CT mode
For products intended solely for sale within Japan, please contact our company about copyright permission.
For products intended for sale outside of Japan, it is the responsibility of the customer to obtain permission to use a
melody by following all relevant copyright rules and regulations for the countries concerned.
S0 to S3
Music
Melody name
Tempo
Sound assign
Time interval mode
CT mode
S3
S2
S1
S0
No.
L
L
L
L
1
Hitomi ga hohoemukara
105
2
0
0
1
0
0
0
0
pulse
L
L
L
H
2
Here comes the sun
272
3
3
3
3
1
1
1
1
pulse
L
L
H
L
3
Heigh Ho
215
7
4
4
5
0
0
0
0
pulse
L
L
H
H
4
Mirai yosouzu II
67
E
E
E
E
0
0
0
0
pulse
L
H
L
L
5
I need to be in love
76
F
9
9
9
0
0
0
0
pulse
L
H
L
H
6
Kanon
129
C
8
D
B
0
0
0
0
pulse
L
H
H
L
7
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
L
H
H
H
8
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
L
L
L
9
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
L
L
H
10
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
L
H
L
11
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
L
H
H
12
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
H
L
L
13
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
H
H
L
H
14
Heigh Ho-2
215
6
4
4
5
0
0
0
0
pulse
H
H
H
L
15
Heigh Ho-3
215
7
4
4
5
0
0
0
0
pulse
H
H
H
H
16
Hitomi ga hohoemukara
119
F
F
F
F
0
0
0
0
pulse
CH1 CH2 CH3 CH4 CH1 CH2 CH3 CH4
SEIKO NPC CORPORATION - 15
SM1350AAQM
Please pay your attention to the following points at time of using the products shown in this document.
1. The products shown in this document (hereinafter ”Products”) are designed and manufactured to the generally accepted standards of
reliability as expected for use in general electronic and electrical equipment, such as personal equipment, machine tools and
measurement equipment. The Products are not designed and manufactured to be used in any other special equipment requiring
extremely high level of reliability and safety, such as aerospace equipment, nuclear power control equipment, medical equipment,
transportation equipment, disaster prevention equipment, security equipment. The Products are not designed and manufactured to be
used for the apparatus that exerts harmful influence on the human lives due to the defects, failure or malfunction of the Products.
If you wish to use the Products in that apparatus, please contact our sales section in advance.
In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility whatsoever for any
damages resulting from the use of that apparatus.
2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability thereof.
3. The information described in this document is presented only as a guide for using the Products. No responsibility is assumed by us for any
infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise
under any patents or other rights of the third parties. Then, we assume no responsibility whatsoever for any damages resulting from that
infringements.
4. The constant of each circuit shown in this document is described as an example, and it is not guaranteed about its value of the mass
production products.
5. In the case of that the Products in this document falls under the foreign exchange and foreign trade control law or other applicable laws and
regulations, approval of the export to be based on those laws and regulations are necessary. Customers are requested appropriately take
steps to obtain required permissions or approvals from appropriate government agencies.
SEIKO NPC CORPORATION
1-9-9, Hatchobori, Chuo-ku,
Tokyo 104-0032, Japan
Telephone: +81-3-5541-6501
Facsimile: +81-3-5541-6510
http://www.npc.co.jp/
Email:[email protected]
ND12004-E-03 2013.03
SEIKO NPC CORPORATION - 16