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21.2.3
AC Characteristics
Clock timing parameters are listed in table 21.13, control signal timing parameters in table 21.14,
and bus timing parameters in table 21.15. Timing parameters of the on-chip supporting modules
are listed in table 21.16.
Table 21.13 Clock Timing
Condition:
T
= –20°C to +75°C (regular specifications), T
a
specifications)
Condition A:
V
= 3.0 to 5.5 V, AV
CC
fmax = 13 MHz
Condition B:
V
= 5.0 V ± 10%, AV
CC
fmax = 20 MHz
Item
Clock cycle time
Clock pulse low width
Clock pulse high width
Clock rise time
Clock fall time
Clock oscillator settling
time at reset
Clock oscillator settling
time in software standby
= 3.0 to 5.5 V, V
CC
= 5.0 V ± 10%, V
CC
A
Symbol
Min
Max
t
76.9
1000
cyc
t
18
—
CL
t
18
—
CH
t
—
15
Cr
t
—
15
Cf
t
20
—
OSC1
t
7
—
OSC2
Section 21 Electrical Characteristics
= –40°C to +85°C (wide-range
a
= 3.0 to AV
REF
CC
= 4.5 to AV
REF
Condition
B
Min
Max
50
1000
15
—
15
—
—
10
—
10
20
—
7
—
Rev. 4.00 Jan 26, 2006 page 725 of 938
, V
= AV
= 0 V,
SS
SS
, V
= AV
= 0 V,
CC
SS
SS
Test
Unit
Conditions
ns
Figure 21.11
ns
ns
ns
ns
ms
Figure 21.7
ms
Figure 20.1
REJ09B0276-0400
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