E0C6251F 参数 Datasheet PDF下载

E0C6251

q

Oscillation Characteristics

The oscillation characteristics change depending on the conditions (components used, board pattern, etc.). Use the follow-

ing characteristics as reference values.

E0C6251 (Crystal oscillation circuit)

(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)

Condition

Unit

Characteristic

Symbol

Min.

Typ.

Max.

V

t

sta≤5sec

(V

SS

)

Oscillation start voltage

Vsta

-1.8

V

(V

SS

)

t

stp≤10sec

Oscillation stop voltage

Vstp

-1.8

pF

Including the parasitic capacity inside the IC

Built-in capacitance (drain)

C

D

20

∂f/∂V

ppm

V

SS

=-1.8 to -3.5V

Frequency/voltage deviation

5

∂f/∂IC

ppm

Frequency/IC deviation

-10

10

∂f/∂C

G

C

G

=5 to 25pF

ppm

Frequency adjustment range

40

C

G

=5pF

V

(V

SS

)

Harmonic oscillation start voltage V

hho

-3.5

Between OSC1 and V

DD

, V

SS

R

leak

MΩ

Permitted leak resistance

200

E0C62L51 (Crystal oscillation circuit)

(Unless otherwise specified: V

DD

=0V, V

SS

=-1.5V, Crystal: C-002R (C

I

=35kΩ), C

G

=25pF, C

D

=built-in, Ta=25°C)

Min.

Typ.

Max.

Condition

Characteristic

Symbol

Unit

-1.1

t

sta≤5sec

(V

SS

)

Oscillation start voltage

Vsta

V

t

stp≤10sec

(V

SS

) -1.1(-0.9)*

1

Oscillation stop voltage

Vstp

V

20

Including the parasitic capacity inside the IC

Built-in capacitance (drain)

C

D

pF

5

V

SS

=-1.1 to -2.0V (-0.9)

*

1

∂f/∂V

Frequency/voltage deviation

ppm

10

∂f/∂IC

Frequency/IC deviation

-10

ppm

∂f/∂C

G

C

G

=5 to 25pF

Frequency adjustment range

40

ppm

-2.0

(V

SS

)

C

G

=5pF

Harmonic oscillation start voltage V

hho

V

Permitted leak resistance

Between OSC1 and V

DD

, V

SS

200

MΩ

R

leak

∗1:

Items enclosed in parentheses ( ) are those used when operating at heavy load protection mode.

E0C6251 (CR oscillation circuit)

Characteristic

Oscillation frequency dispersion

Oscillation start voltage

Oscillation start time

Oscillation stop voltage

Symbol

f

OSC

Vsta

t

sta V

SS

=-1.8 to -3.5V

Vstp

(Unless otherwise specified: V

DD

=0V, V

SS

=-3.0V, R

CR

=420kΩ, Ta=25°C)

Min.

Typ.

Max.

Unit

Condition

-20

65kHz

20

%

-1.8

V

(V

SS

)

3

mS

-1.8

V

(V

SS

)

E0C62L51 (CR oscillation circuit)

Characteristic

Oscillation frequency dispersion

Oscillation start voltage

Oscillation start time

Oscillation stop voltage

Symbol

f

OSC

Vsta

t

sta V

SS

=-1.1 to -2.0V

Vstp

(Unless otherwise specified: V

DD

=0V, V

SS

=-1.5V, R

CR

=420kΩ, Ta=25°C)

Min.

Typ.

Max.

Unit

Condition

-20

65kHz

20

%

-1.1

V

(V

SS

)

3

mS

-1.1

(V

SS

)

V

7