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SED1520 Series
2–22 EPSON
Relationship between fOSC, fFR and Rf, and operating bounds on VSS and V5
*9 • Relationship between oscillation frequency, frames and Rf
(SED1520F0A), (SED1522F0A)
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 ]ΩRf
Same for 1/16 and 1/32 duties
Figure 5 (a) Figure 5 (b)
• Relationship between external clocks (f
CL) and frames
(SED1520F
AA) , (SED1522FAA)
200
100
0123
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