E0C624A
● 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 oscillation circuit
(Unless otherwise specified: VDD=0V, VSS=-3.0V, Crystal: C-002R (CI=35kΩ), CGX=25pF, CDX=built-in, RfX=10MΩ, VSC="0", Ta=25°C)
Characteristic
Oscillation start time
Built-in capacitance (drain)
Symbol
sta
Condition
Min.
Typ.
Max.
5
Unit
Sec
pF
t
VSS=-2.2 to -5.5V
CD
Package as assembled
Bare chip
22
21
pF
Frequency/voltage deviation
Frequency/IC deviation
Frequency adjustment range
Harmonic oscillation start voltage
Permitted leak resistance
∂f/∂V
∂f/∂IC
∂f/∂C
V
SS=-2.2 to -5.5V
5
10
ppm
ppm
ppm
V
-10
35
G
C
C
G
G
=5 to 25pF
=5pF
45
V
hho
-5.5
Rleak
Between OSC1 and VDD, VS1
200
MΩ
OSC3 CR oscillation circuit (1)
(Unless otherwise specified: VDD=0V, VSS=-3.0V, VSC="1", Ta=25°C)
Characteristic
Oscillation start time
Frequency/voltage deviation
Oscillation frequency
Symbol
Condition
Min.
Typ.
Max.
3
5
Unit
mS
%
tsta
∂f/∂V
fCR
VSS=-2.2 to -5.5V
VSS=-2.2 to -5.5V
ROSC=40kΩ
-5
860×70%
860
860×130% kHz
OSC3 CR oscillation circuit (2)
(Unless otherwise specified: VDD=0V, VSS=-5.0V, VSC="2", Ta=25°C)
Characteristic
Oscillation start time
Frequency/voltage deviation
Oscillation frequency
Symbol
Condition
Min.
Typ.
Max.
3
5
Unit
mS
%
tsta
∂f/∂V
fCR
VSS=-3.5 to -5.5V
VSS=-3.5 to -5.5V
ROSC=20kΩ
-5
1.7×70%
1.7
1.7×130% MHz
OSC3 ceramic oscillation circuit (1)
(Unless otherwise specified: VDD=0V, VSS=-3.0V, VSC="1", Ceramic: CSB 1000J (Murata Mfg. Co.), CGC=CDC=100pF, RfC=1MΩ, Ta=25°C)
Characteristic
Oscillation start time
Frequency/voltage deviation
Symbol
sta
∂f/∂V
Condition
Min.
Typ.
Max.
3
3
Unit
mS
%
t
V
V
SS=-2.2 to -5.5V
SS=-2.2 to -5.5V
-3
OSC3 ceramic oscillation circuit (2)
(Unless otherwise specified: VDD=0V, VSS=-5.0V, VSC="2", Ceramic: CSA 2.00MG (Murata Mfg. Co.), CGC=CDC=100pF, RfC=1MΩ, Ta=25°C)
Characteristic
Oscillation start time
Frequency/voltage deviation
Symbol
sta
∂f/∂V
Condition
Min.
Typ.
Max.
3
3
Unit
mS
%
t
V
V
SS=-3.5 to -5.5V
SS=-3.5 to -5.5V
-3
6
SEIKO [ SEIKO EPSON CORPORATION ]
