Datasheet

Section 22 Electrical Characteristics
Rev. 3.00 Sep. 10, 2007 Page 425 of 528
REJ09B0216-0300
22.2.3 AC Characteristics
Table 22.3 AC Characteristics
V
CC
= 4.5 to 5.5 V, V
SS
= 0.0 V, T
a
= -20 to +75°C/-40 to +85°C, unless otherwise indicated.
Values
Item Symbol
Applicable
Pins
Test Condition Min. Typ. Max. Unit
Reference
Figure
System clock
oscillation
frequency
f
OSC
OSC1, OSC2 4.0 — 20.0 MHz *
1
t
cyc
1 — 64 t
OSC
*
2
System clock (φ)
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
(on-chip oscillator)
t
rc
— — 500 µs
Oscillation
stabilization time
t
rcx
X1, X2 — — 2.0 s
External clock high
width
t
CPH
OSC1 20.0 — — ns Figure 22.1
External clock low
width
t
CPL
OSC1 20.0 — — ns
t
CPr
OSC1 — — 10.0 ns
External clock rise
time
— — 15.0
t
CPf
OSC1 — — 10.0 ns
External clock fall
time
— — 15.0