Epson S1C63558 - Manual (Page 176)

166 EPSON S1C63558 TECHNICAL MANUAL
CHAPTER 7: ELECTRICAL CHARACTERISTICS
7.8 Telephone Function Characteristics
Item
Flash pause time
Mute hold time
Make ratio
Dial puls rate
Make time
Break time
Tone output DC level
ROW single tone
output voltage
COL single tone
output voltage
Tone output voltage ratio
Tone load resistor
Tone distortion ratio
Tone output frequency
Tone output time
Tone inter-digit pause time
Tone output cycle
Symbol
t
FLP
t
MH
M/B
DR
t
M
t
B
V TDC
V R
V C
dB CR
R TL
THD
f
ROW1
f ROW2
f ROW3
f ROW4
f COL1
f COL2
f COL3
f COL4
t
TD
t
TIP
t
T
Unit
ms
ms
–
pps
ms
ms
ms
ms
ms
ms
ms
ms
V
mVrms
mVrms
mVrms
mVrms
dB
dB
k
Ω
%
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
ms
ms
ms
Max.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
6
–
–
–
–
–
–
–
–
–
–
–
Typ.
938
4
1/2
2/3
10
20
33.2
16.6
39.1
19.5
66.4
33.2
58.6
29.3
0.5( V DD -V SS
)
92
168
122
224
2.5
2.5
–
–
701.32
771.45
857.17
935.10
1215.88
1331.68
1471.85
1645.01
–
94
–
Min.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7
–
–
–
–
–
–
–
–
–
94
–
188
Condition
Selected by software
Selected by software
10pps, M/B=1/2
20pps, M/B=1/2
10pps, M/B=2/3
20pps, M/B=2/3
10pps, M/B=1/2
20pps, M/B=1/2
10pps, M/B=2/3
20pps, M/B=2/3
V DD =3V, R L =10k
Ω
V DD =5.5V, R L =10k
Ω
V DD =3V, R L =10k
Ω
V DD =5.5V, R L =10k
Ω
V DD =3V, R L =10k
Ω
V DD =5.5V, R L =10k
Ω
V DD =2.5 to 5.5V
V DD =2.5 to 5.5V, R L =10k
Ω
t
TD + t
TIP
Unless otherwise specified:
V DD =3.0V, V SS =0V, f CLK =3.579545MHz, Ta=-20 to 70
°
C
7.9 Timing Chart
System clock switching
OSCC
CLKCHG
5 msec min. 1 instruction execution
time or longer