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