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MSM66P54-01

One-Time Programmable (OTP) Speech Synthesizer

Oki Electric Industry 

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

AC Characteristics (Standalone Mode, VDD = 5.0 V, GND = 0 V, Ta = 10 ~ 70˚ C) (Continued)

Item

Symbol

Condition

MIN TYP MAX Unit

D/A converter change time

tDAR

LPF stabilization time

tL

Standby transition period

tSTB

Random access capture time

tRA

–

–

–

Function details 5.2

60

64

68

ms

6

8

10 ms

0.15 0.20 0.25 sec

16

32

48

µs

AC Characteristics (Microcomputer Interface Mode, VDD = 5.0 V, GND = 0 V, Ta = 10 ~ 70˚ C)

Item

Symbol

Condition

MIN TYP MAX Unit

Master clock frequency (1)

Master clock frequency (2)

Master clock duty cycle

O(RESET) input pulse width

O(RND) input pulse width

SW0~SW3 input pulse width

(BUSY) output time

(BUSY) output time

(BUSY) output time

Chattering prevention time

DA converter change time

LPF stabilization time

Standby transition period

f(OSC1)

f(OSC2)

fduty

tw(O(RST))

tw(O(RAN))

tw(SW)

tSBS

tBN

tBF

tCHA

tDAR

tL

tSTB

At XT selection

At RC selection [1]

–

–

–

–

–

At fs = 8 kHz

–

–

–

–

–

– 4.096 – MHz

–

256

–

kHz

40

50

60

%

10

–

–

µs

100

–

–

µs

32

–

–

ms

–

–

10

µs

350 375 400 µs

–

–

64 ms

29

30

31

ms

60

64

68

ms

6

8

10 ms

0.15 0.2 0.25 sec

[1] Accuracy of oscillation frequencies when selecting RC oscillation strongly depends on the accuracy of the externally installed capacitor and

resistor.

Timing Waveforms

VDD

RESET (I)

BUSY (O)

td(RST)

tw(RST)

Figure 11. Power-On Timing

4-14

OKI SEMICONDUCTOR

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