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20.4.3
AC Characteristics
(1) Clock Timing
Table 20-32 Clock Timing
Condition B: V
= 3.0 V to 3.6 V, AV
CC
0 V, φ = 2 MHz to 25 MHz, T
T
= –40°C to 85°C (wide-range specifications)
a
Item
Clock cycle time
Clock pulse high width
Clock pulse low width
Clock rise time
Clock fall time
Reset oscillation stabilization time
(crystal)
Software standby oscillation
stabilization time (crystal)
External clock output stabilization
delay time
= 3.0 V to 3.6 V, V
CC
= –20°C to 75°C (regular specifications),
a
Symbol
Min
t
40
cyc
t
15
CH
t
15
CL
t
—
Cr
t
—
Cf
t
10
OSC1
t
10
OSC2
t
500
DEXT
— Preliminary—
= 3.0 V to AV
, V
ref
CC
Max
Unit
Test Conditions
500
ns
Figure 20-2
—
ns
—
ns
5
ns
5
ns
—
ms
Figure 20-3
—
ms
µs
—
Figure 20-3
Rev. 5.00, 12/03, page 839 of 1088
= AV
=
SS
SS
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