305
14.2.3
AC Characteristics
Table 14.3 lists the control signal timing, and tables 14.4 and 14.5 list the serial interface timing.
Table 14.3
Control Signal Timing
V
CC
= 2.7 V to 5.5 V, AV
CC
= 2.7 V to 5.5 V, V
SS
= AV
SS
= 0.0 V, T
a
= –20 to +75
°
C, including
subactive mode, unless otherwise specified.
Item
Symbol
Applicable
Pins
Min
Typ
Max
Unit
Test Condition
Reference
Figure
System clock
oscillation frequency
f
OSC
OSC
1
, OSC
2
2
—
10
MHz
OSC clock (ø
OSC
)
cycle time
t
OSC
OSC
1
, OSC
2
100
—
1000
ns
1
Figure 14.1
System clock (ø)
t
cyc
2
—
16
t
OSC
1
cycle time
—
—
2000
ns
Subclock oscillation
frequency
f
W
X
1
, X
2
—
32.768 —
kHz
Watch clock cycle
time (ø
W
)
t
W
X
1
, X
2
—
30.5
—
µ
s
Subclock (ø
SUB
)
cycle time
t
subcyc
2
—
8
t
W
2
Instruction cycle time
2
—
—
t
cyc
t
subcyc
Oscillation stabiliza-
tion time
t
rc
OSC
1
, OSC
2
—
—
40
ms
V
CC
= 4.0 V to 5.5 V
(crystal oscillator)
—
—
60
Oscillation
stabilization time
t
rc
X
1
, X
2
—
—
2
s
External clock high
t
CPH
OSC
1
40
—
—
ns
V
CC
= 4.0 V to 5.5 V Figure 14.1
width
80
—
—
External clock low
t
CPL
OSC
1
40
—
—
ns
V
CC
= 4.0 V to 5.5 V Figure 14.1
width
80
—
—
External clock rise
t
CPr
—
—
15
ns
V
CC
= 4.0 V to 5.5 V Figure 14.1
time
—
—
20
External clock fall
t
CPf
—
—
15
ns
V
CC
= 4.0 V to 5.5 V Figure 14.1
time
—
—
20
Pin
RES
low width
t
REL
RES
18
—
—
t
cyc
t
subcyc
Figure 14.2
Notes: 1. A frequency between 1 MHz to 10 MHz is required when an external clock is input.
2. Selected with SA1 and SA0 of system clock control register 2 (SYSCR2).