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MSM66P54-01

One-Time Programmable (OTP) Speech Synthesizer

Oki Electric Industry 

s MSM66P54 OTP Speech Synthesizer s––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

The table below shows the additional functions available in the MSM6650 family when compared to the

family’s predecessor, the MSM637x family.

Comparison of MSM6376 and MSM6650 Families

Control Method

Speech synthesis method

“Beep” tone frequency (length)

MSM6650 Family

Standalone mode

Microcomputer mode - parallel input

Microcomputer mode - serial input

4-bit ADPCM or

8-bit PCM/Melody PCM

0.5, 1.0, 1.6, or 2.0 kHz

(User-specified length of variable duration)

Sampling frequency (fS)

Eight frequencies

(4.0, 5.3, 6.4, 8.0, 10.6, 12.8, 16.0, or 32.0 kHz)

Master clock frequency

LPF attenuation factor

256 kHz (RC) / 4.096 MHz (crystal)

–40 dB/octave

MSM637x Family

CPU input - software control

4-bit ADPCM

1.0 or 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, or 8.0 kHz with fOSC = 64 kHz;

16.0, 25.6, or 32.0 kHz with fOSC = 256 kHz)

40 kHz ~ 256 kHz

–24 dB/octave

LPF cut-off Frequency (fCUT), kHz

Maximum phrase number

Pull-up/pull-down resistors

Standby conversion time

Maximum external ROM

Added functions in edit ROM

fCUT 1.8 2.6 2.6 3.2 4.2 5.1 6.4 12.8

fSAM 4.0 5.3 6.4 8.0 10.6 12.8 16.0 32.0

127 (in MCU Interface Mode)

Built in

200 ms

64 Mbit

Fade-out

Random playback

Melody playback

PCM playback

Serial input control

fCUT 1.5 3.0 3.0

fSAM 4.0 6.4 8.0

111

—

3 Sec

16 Mbit

No Edit ROM

SPEECH DURATION

Type

MSM6650

MSM6652

MSM6653

MSM6654

MSM66P54 [3]

MSM6655

MSM6656

Data ROM

Capacity [1]

64 Mbits [2]

288 Kbit

544 Kbit

1 Mbit

1 Mbit

1.5 Mbit

2 Mbit

fSAM = 4.0 kHz

> 1 hour

16.9 sec

31.2 sec

63.8 sec

63.8 sec

96.5 sec

129.1 sec

Maximum Speech Duration

fSAM = 6.4 kHz

> 40 minutes

fSAM = 8.0 kHz

> 30 minutes

fSAM = 16.0 kHz

> 15 minutes

10.5 sec

8.4 sec

4.2 sec

19.5 sec

15.6 sec

7.8 sec

39.9 sec

31.9 sec

15.9 sec

39.9 sec

31.9 sec

15.9 sec

60.3 sec

48.2 sec

24.1 sec

80.7 sec

64.5 sec

32.2 sec

[1] Actual ROM area in MSM6652, MSM6653, MSM6654, MSM6655, and MSM6656 is smaller by 22 Kbits.

[2] Via external ROM only (no on-chip ROM available).

[3] OTP version.

fSAM = 32.0 kHz

> 8 minutes

2.1 sec

3.9 sec

7.9 sec

7.9 sec

12.0 sec

16.1 sec

4-2

OKI SEMICONDUCTOR

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