29 eleCTRiCal ChaRaCTeRiSTiCS
29-6
Seiko epson Corporation
S1C17624/604/622/602/621 TeChniCal Manual
iOSC oscillation frequency-temperature characteristic
Typ. value
-50
10000
1000
-25
0
25
50
75
100
Ta [
°
C]
f
IOSC
[kHz]
external Clock input Characteristics
29.5
EXCL
x
t
ECH
t
ECL
t
CF
t
CR
V
IH
V
IL
OSC3
t
OSC3
t
OSC3H
t
OSC3H
t
OSC3
t
OSC3D
=
V
IH
SCLK
x
t
CF
t
CR
V
IH
V
IL
Unless otherwise specified: V
DD
= 1.8 to 3.6V, V
SS
= 0V, V
IH
= 0.8V
DD
, V
IL
= 0.2V
DD
, Ta = -25 to 70°C
item
Symbol
Min.
Typ.
Max.
unit
EXCL0/1/2/3 input High pulse width
t
ECH
2/f
SYS
s
EXCL5/6 input High pulse width
60
ns
EXCL0/1/2/3 input Low pulse width
t
ECL
2/f
SYS
s
EXCL5/6 input Low pulse width
60
ns
UART transfer rate
R
U
460800
bps
UART transfer rate (IrDA mode)
R
UIrDA
115200
bps
Input rise time
t
CR
80
ns
Input fall time
t
CF
80
ns
OSC3 clock cycle time
t
OSC3
125
ns
OSC3 clock input duty
t
OSC3D
46
54
%
*
f
SYS
: System operating clock frequency
input/Output Pin Characteristics
29.6
S1C17624/604/622
Unless otherwise specified: V
DD
= 1.8 to 3.6V, V
SS
= 0V, Ta = -25 to 70
°
C
item
Symbol
Condition
Min.
Typ.
Max.
unit
High level input voltage
V
IH
P
xx
0.8V
DD
V
DD
V
Low level input voltage
V
IL
P
xx
0
0.2V
DD
V
High level Schmitt input threshold voltage
V
T1+
#RESET
0.5V
DD
0.9V
DD
V
Low level Schmitt input threshold voltage
V
T1-
#RESET
0.1V
DD
0.5V
DD
V
High level Schmitt input threshold voltage
*
1
V
T2+
P
xx
0.5V
DD
0.9V
DD
V
Low level Schmitt input threshold voltage
*
1
V
T2-
P
xx
0.1V
DD
0.5V
DD
V
Hysteresis voltage
D
V
T
P
xx
, #RESET
0.1
V