The conventional “beep” tones and 2-channel playback are now easier to use. OKI has added additional functions
such as melody play, fade-out, and random playback. OKI has improved external control by adding an Phrase
Control Table functioin. The Phrase Control Table function can be used to form sentences by linking phrases.
The MSM6650 family members can support a variety of applications as it can function in either Standalone Mode
or Microcontroller Interface Mode. In Microcontroller Interface Mode, serial input control is available. Serial
input control minimizes the number of microcontroller port pins required for voice synthesis control. The
MSM6650 family includes an internal mask ROM version, internal one-time-programmable (OTP) ROM version,
and external ROM version. The features of the MSM6650 family devices are as follows.
•
MSM6652/53/54/55/56-xxx
These devices are single-chip voice synthesizers with an on-chip mask ROM using the CMOS technology.
Standalone Mode or Microcontroller Interface Mode can be selected by mask option.
These have already been obsolete devices. We recommend A version when you design in your new products as
bellows.
•
MSM6652A/53A/54A/55A/56A/58A-xxx
The trial production period for these devices is shorter than those described above. These devices are suitable for
new products.
•
MSM66P56-xx
The device is a single-chip CMOS voice synthesizer with one-time-programmable (OTP) ROM.
Standalone and Microcontroller Interface Modes are selected by using a code (01-04).
The user can easily write voice data using the development tool AR204,AR205. Unlike the mask ROM version,
the OTP version is suited to applications which requires a small lot production of different type devices or short
delivery time.
•
MSM6650
The MSM6650 device can directly connect external ROM or EPROM of up to 64 Mbits, which stores voice data.
This device is ideally suited to an evaluation IC for the MSM6650 family because its circuit configuration is
identical to those of the mask ROM-based and OTP version devices.
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MSM6650 Family
CONTENTS
Standalone Mode
FEATURES ............................................................................................................................................................. 5
7. Voice Playback Time ..................................................................................................................................... 30
8. Channel Status ............................................................................................................................................... 30
FEATURES ........................................................................................................................................................... 46
10. Voice Playback Time ................................................................................................................................... 90
11. Channel Status ............................................................................................................................................. 91
REVISION HISTORY ........................................................................................................................................ 125
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The table below shows the major differences between the MSM6650 family and the MSM6375 family.
MSM6650 Family
Interface
Voice synthesis method
Standalone mode/Microcontroller
interface mode
4-bit ADPCM or 8-bit PCM/Melody
PCM
0.5, 1.0, 1.3, 2.0kHz
Options (16 ms to 2100 ms)
MSM6375 Family
SW input/CPU input interface
4-bit ADPCM
1.0
and 2.0 kHz,
(User-specified length, fixed at
either 64, 128, 250, or 500 ms)
Three frequencies at two oscillator
frequencies
(4.0, 6.4, 8.0 kHz with f
OSC
= 64 kHz;
16.0, 25.6, 32.0 kHz with f
OSC
= 256
kHz)
40 kHz to 256 kHz
–24 dB/octave
5.1
12.8
6.4
16.0
12.8
32.0
“Beep” tone frequency (length)
Sampling frequency (f
SAM
)
Eight frequencies
(4.0,5.3, 6.4, 8.0, 10.6, 12.8, 16.0, or
32.0 kHz)
256 kHz (RC)/4.096 MHz
(ceramic/crystal)
–40 dB/octave
f
CUT
1.8
4.0
2.6
5.3
2.6
6.4
3.2
8.0
4.2
10.6
Master clock frequency (f
OSC
)
LPF attenuation factor
LPF cut-off frequency (f
CUT
), kHZ
Maximum phrase number
Pull-up/pull-down resistors
Standby conversion time
Mask options
f
CUT
f
SAM
1.5
4.0
3.0
6.4
111
—
3.0
8.0
f
SAM
127
Built in
0.2 sec
4 options
Phrase Control Table
Fade-out
Random playback
Melody playback
PCM playback
Serial input/port output
3 sec
14 options
Added function in Phrase Control
Table
—
The MSM6375 family have already been obsolete devices. We recommend to design with using MSM6650
family when you design in your new products.
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MSM6650 Family
STANDALONE MODE
FEATURES
Device name
MSM6652, 6652A
MSM6653, 6653A
MSM6654, 6654A
MSM6655, 6655A
MSM6656, 6656A
MSM6658A
MSM66P56
MSM6650
ROM size
288 Kbits
544 Kbits
1 Mbit
1.5 Mbits
2 Mbits
4 Mbits
2 Mbit
64 Mbits (Max)
Maximum playback time (sec)
f
SAM
= 4.0 kHz
16.9
31.2
63.8
96.5
129.1
259.7
129.1
4194.3
f
SAM
= 6.4 kHz
10.5
19.5
39.9
60.3
80.7
162.9
80.7
2620.5
f
SAM
= 8.0 kHz
8.4
15.6
31.9
48.2
64.5
129.8
64.5
2096.4
f
SAM
= 16 kHz
4.2
7.8
15.9
24.1
32.2
64.9
32.2
1048.2
Note: Actual voice ROM area is smaller by 22 Kbits.
•
4-bit ADPCM or 8-bit PCM sound generation
•
Melody function
•
Phrase Control Table function
•
Two-channel mixing function
•
Built-in random playback function
•
Fade-out function via four-step sound volume attenuation
•
Built-in beep tone of 0.5 kHz, 1.0 kHz, 1.3 kHz, or 2.0 kHz selectable with a specific code
•
Sampling frequency of 4.0 kHz, 5.3 kHz, 6.4 kHz, 8.0 kHz, 10.6 kHz, 12.8 kHz, 16.0 kHz, or 32.0 kHz (32 kHz
sampling is not possible when using RC oscillation)
