31 ELECTRICAL CHARACTERISTICS
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
31-7
PLL Characteristics
31.7
Unless otherwise specified: PLLV
DD
= 1.65 to 1.95V, PLLV
SS
= 0V, Ta = -40 to 85
°
C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Input frequency
*
1
f
PLLIN
5
–
48
MHz
Output frequency
*
2
f
PLLOUT
20
–
72
MHz
Output stabilization time
t
PLL
–
–
200
µs
*
1) Input clock source divider: OSC3
×
1,
×
1/2,
×
1/3,
×
1/4,
×
1/5,
×
1/6,
×
1/7,
×
1/8,
×
1/9,
×
1/10
*
2) Multiplication rate:
×
1,
×
2,
×
3,
×
4,
×
5,
×
6,
×
7,
×
8,
×
9,
×
10,
×
11,
×
12,
×
13,
×1
4,
×
15,
×
16
AC Characteristics
31.8
External Clock Input Characteristics
31.8.1
OSC1/OSC3
t
C1
/
t
C3
t
C1H
/
t
C3H
t
C1ED
=
t
C1H
/
t
C1
t
C3ED
=
t
C3H
/
t
C3
t
IF
t
IR
OSC1 external clock
Unless otherwise specified: LV
DD
= RTCV
DD
= 1.65 to 1.95V, V
SS
= 0V, Ta = -40 to 85°C
Item
Symbol
Min.
Typ.
Max.
Unit
OSC1 external clock cycle time
t
C1
–
30.51
–
µs
OSC1 external clock input duty
t
C1ED
45
–
55
%
OSC1 external clock input rise time
t
IF
–
–
5
ns
OSC1 external clock input fall time
t
IR
–
–
5
ns
OSC3 external clock
Unless otherwise specified: LV
DD
= RTCV
DD
= 1.65 to 1.95V, V
SS
= 0V, Ta = -40 to 85°C
Item
Symbol
Min.
Typ.
Max.
Unit
OSC3 external clock cycle time
t
C3
20.83
–
500
ns
OSC3 external clock input duty
t
C3ED
45
–
55
%
OSC3 external clock input rise time
t
IF
–
–
5
ns
OSC3 external clock input fall time
t
IR
–
–
5
ns
SRAMC AC Characteristics
31.8.2
SRAM read cycle
MCLK
CMU_CLK
A[25:0]
#CE
x
#RD
D[15:0]
#WAIT
t
CD
t
CYC
t
AD
t
CED
t
RDD
t
RDD
t
AD
t
CED
valid
valid
t
RDS
t
RDDH
t
RDW
t
WTS
t
WTH