E0C621A
s
OSCILLATION CHARACTERISTICS
The oscillation characteristics change depending on the conditions (components used, board pattern, etc.). Use the follow-
ing characteristics as reference values.
q
OSC1 (Crystal)
(Unless otherwise specified: V
DD
=0V, V
SS
=-3.0V, Crystal: C-002R (C
I
=35kΩ), C
G
=25pF, C
D
=built-in, Ta=25°C)
Symbol
Min.
Typ.
Max.
Condition
Unit
t
sta
–
–
5
V
SS
=-2.2 to -3.5V
Sec
C
D
Package as assembled
–
25
–
pF
Bare chip
–
24
–
pF
∂f/∂V
V
SS
=-2.2 to -3.5V
Frequency/voltage deviation
–
–
5
ppm
∂f/∂IC
Frequency/IC deviation
-10
–
10
ppm
∂f/∂C
G
C
G
=5 to 25pF
Frequency adjustment range
40
–
–
ppm
C
G
=5pF
Harmonic oscillation start voltage V
hho
–
–
-3.5
V
Between OSC1 and other pins
R
leak
Permitted leak resistance
200
–
–
MΩ
Characteristic
Oscillation start time
Built-in capacitance (drain)
q
OSC3 (CR oscillation)
Characteristic
Oscillation frequency
Oscillation start voltage
Oscillation start time
Oscillation stop voltage
Symbol
f
OSC3
Vsta
t
sta V
SS
=-2.2 to -3.5V
Vstp
(Unless otherwise specified: V
DD
=0V, V
SS
=-3.0V, R
CR
=140kΩ, Ta=25°C)
Min.
Typ.
Max.
Unit
Condition
–
280
–
kHz
-2.2
–
–
V
(V
SS
)
–
3
–
mS
-2.2
–
–
V
(V
SS
)
q
OSC3 (Ceramic)
(Unless otherwise specified: V
DD
=0V, V
SS
=-3.0V, Ceramic: CSB455E (Murata Mfg. Co.), C
GC
=C
DC
=100pF, Ta=25°C)
Characteristic
Symbol
Condition
Min.
Typ.
Max.
Unit
Oscillation start voltage
Vsta
(V
SS
)
-2.2
–
–
V
Oscillation start time
t
sta V
SS
=-2.2 to -3.5V
–
3
–
mS
Oscillation stop voltage
Vstp
(V
SS
)
-2.2
–
–
V
5
SEIKO [ SEIKO EPSON CORPORATION ]
