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Section 20 Electrical Characteristics
20.3.1
Clock Timing
Table 20.4 Clock Timing
Conditions: V
= 3.0 V to 3.6 V, AV
CC
V
= AV
SS
Pφ = 8 MHz to 35 MHz,
T
= –20°C to +75°C (regular specifications),
a
T
= –40°C to +85°C (wide-range specifications)
a
Item
Clock cycle time
Clock high pulse width
Clock low pulse width
Clock rising time
Clock falling time
Oscillation settling time after
reset (crystal)
Oscillation settling time after
leaving software standby mode
(crystal)
External clock output delay
settling time
External clock input low pulse
width
External clock input high pulse
width
External clock rising time
External clock falling time
Rev.2.00 Jun. 28, 2007 Page 622 of 666
REJ09B0311-0200
= 3.0 V to 3.6 V, V
CC
= 0 V, Iφ = 8 MHz to 50 MHz, Bφ = 8 MHz to 50 MHz,
SS
Symbol
t
cyc
t
CH
t
CL
t
Cr
t
Cf
t
OSC1
t
OSC2
t
DEXT
T
EXL
T
EXH
T
EXr
T
EXf
t
CH
Bφ
Figure 20.2 External Bus Clock Timing
= 3.0 V to AV
ref
Min.
Max.
20.0
125
5
5
5
5
10
10
1
27.7
27.7
5
5
t
cyc
t
Cf
t
t
CL
Cr
,
CC
Unit.
Test Conditions
ns
Figure 20.2
ns
ns
ns
ns
ms
Figure 20.4
ms
Figure 20.3
ms
Figure 20.4
ns
Figure 20.5
ns
ns
ns
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