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