Datasheet

Section 23 Electrical Characteristics
Rev. 3.00 Mar. 15, 2006 Page 452 of 526
REJ09B0060-0300
23.3.3 AC Characteristics
Table 23.12 AC Characteristics
V
CC
= 2.7 to 5.5 V, V
SS
= 0.0 V, T
a
= –20 to +75°C, unless otherwise indicated.
Applicable
Values
Reference
Item Symbol Pins Test Condition Min. Typ. Max. Unit Figure
System clock
oscillation
f
OSC
OSC1,
OSC2
V
CC
= 4.0 to 5.5 V 2.0  20.0 MHz *
1
frequency
2.0  10.0
System clock (φ) t
cyc
1  64 t
OSC
*
2
cycle time
  12.8 µs
Subclock
oscillation
frequency
f
W
X1, X2  32.768  kHz
Watch clock (φ
W
)
cycle time
t
W
X1, X2  30.5  µs
Subclock (φ
SUB
)
cycle time
t
subcyc
2  8 t
W
*
2
Instruction cycle
time
2   t
cyc
t
subcyc
Oscillation
stabilization time
(crystal resonator)
t
rc
OSC1,
OSC2
  10.0 ms
Oscillation
stabilization time
(ceramic resonator)
t
rc
OSC1,
OSC2
  5.0 ms
Oscillation
stabilization time
t
rcx
X1, X2   2.0 s
External clock t
CPH
OSC1 V
CC
= 4.0 to 5.5 V 205.0   ns Figure 23.1
high width
40.0  
External clock t
CPL
OSC1 V
CC
= 4.0 to 5.5 V 20.0   ns
low width
40.0  
External clock t
CPr
OSC1 V
CC
= 4.0 to 5.5 V   10.0 ns
rise time
  15.0
External clock t
CPf
OSC1 V
CC
= 4.0 to 5.5 V   10.0 ns
fall time
  15.0