E0C63557
q
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: V
DD
=3.0V, V
SS
=0V, f
OSC1
=32.768kHz, C
G
=25pF, C
D
=built-in, Ta=-20 to 70°C)
Characteristic
Symbol
Condition
Min.
Typ.
Max. Unit
t
sta≤3sec (V
DD
)
Oscillation start voltage
Vsta
2.2
V
Oscillation stop voltage
Vstp
t
stp≤10sec (V
DD
)
2.2
V
Built-in capacitance (drain)
C
D
14
pF
Including the parasitic capacitance inside the IC (in chip)
Frequency/voltage deviation
10
ppm
∆f/∆V
V
DD
=2.2 to 5.5V
Frequency/IC deviation
-10
10
ppm
∆f/∆IC
Frequency adjustment range
10
20
ppm
∆f/∆C
G
C
G
=5 to 25pF
Harmonic oscillation start voltage V
hho
5.5
V
C
G
=5pF (V
DD
)
Permitted leak resistance
200
MΩ
Between OSC1 and V
SS
R
leak
OSC3 Ceramic Oscillation Circuit
Characteristic
Oscillation start voltage
Oscillation start time
Oscillation stop voltage
(Unless otherwise specified: V
DD
=3.0V, V
SS
=0V, Ceramic oscillator: 3.58MHz, C
GC
=C
DC
=30pF, Ta=-20 to 70°C)
Symbol
Condition
Min.
Typ.
Max. Unit
Vsta (V
DD
)
2.2
V
t
sta V
DD
=2.2 to 5.5V
5
mS
Vstp (V
DD
)
2.2
V
q
Serial Interface AC Characteristics
Clock Synchronous Master Mode
• During 32 kHz operation
Characteristic
Transmitting data output delay time
Receiving data input set-up time
Receiving data input hold time
(Condition: V
DD
=3.0V, V
SS
=0V, Ta=25°C, V
IH1
=0.8V
DD
, V
IL1
=0.2V
DD
, V
OH
=0.8V
DD
, V
OL
=0.2V
DD
)
Symbol
Min.
Typ.
Max.
Unit
t
smd
5
µS
t
sms
10
µS
t
smh
5
µS
• During 1 MHz operation
Characteristic
Transmitting data output delay time
Receiving data input set-up time
Receiving data input hold time
(Condition: V
DD
=3.0V, V
SS
=0V, Ta=25°C, V
IH1
=0.8V
DD
, V
IL1
=0.2V
DD
, V
OH
=0.8V
DD
, V
OL
=0.2V
DD
)
Symbol
Min.
Typ.
Max.
Unit
t
smd
200
nS
t
sms
400
nS
t
smh
200
nS
Clock Synchronous Slave Mode
• During 32 kHz operation
Characteristic
Transmitting data output delay time
Receiving data input set-up time
Receiving data input hold time
(Condition: V
DD
=3.0V, V
SS
=0V, Ta=25°C, V
IH1
=0.8V
DD
, V
IL1
=0.2V
DD
, V
OH
=0.8V
DD
, V
OL
=0.2V
DD
)
Symbol
Min.
Typ.
Max.
Unit
t
ssd
10
µS
t
sss
10
µS
t
ssh
5
µS
• During 1 MHz operation
Characteristic
Transmitting data output delay time
Receiving data input set-up time
Receiving data input hold time
(Condition: V
DD
=3.0V, V
SS
=0V, Ta=25°C, V
IH1
=0.8V
DD
, V
IL1
=0.2V
DD
, V
OH
=0.8V
DD
, V
OL
=0.2V
DD
)
Symbol
Min.
Typ.
Max.
Unit
t
ssd
500
nS
t
sss
400
nS
t
ssh
200
nS
7
SEIKO [ SEIKO EPSON CORPORATION ]
