SED1520 Series
2–22
EPSON
Relationship between f
OSC
, f
FR
and R
f
, and operating bounds on V
SS
and V5
*9
• Relationship between oscillation frequency, frames and Rf
(SED1520F
0A
), (SED1522F
0A
)
40
30
20
10
0
0.5
1.0
1.5
2.0
2.5
Ta=25°C V =-5V
SS
Ta=25°C V =-5V
SS
[kHz]
fosc
V =-3V
SS
V =-5V
SS
200
100
0
0.5
1.0
1.5
2.0
2.5
SED1520
SED1522
Rf
OSC1
OSC2
[Hz]
Frame
Rf
[M ]
Ω
[M ]
Ω
Rf
Same for 1/16 and 1/32 duties
Figure 5 (a)
Figure 5 (b)
• Relationship between external clocks (f
CL
) and frames
(SED1520F
AA
) , (SED1522F
AA
)
200
100
0
1
2
3
f CL
[kHz]
[Hz]
Frame
duty1/32
duty1/16
duty1/8
Figure 5 (c)
*10 • Operating voltage range of V
SS
and V5 systems
–15
–10
–5
0
–2
–4
–6
–8
(V)
V
5
V
SS
(V)
Operating voltage
range
Figure 6
