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31.3
AC Characteristics
Figure 31.3 shows the test conditions for the AC characteristics.
31.3.1
Clock Timing
Table 31.4 shows the clock timing. The clock timing specified here covers clock output (φ) and
clock pulse generator (crystal) and external clock input (EXTAL pin) oscillation stabilization
times. For details of external clock input (EXTAL pin and EXCL pin) timing, see table 31.5 and
31.6.
Table 31.4 Clock Timing
Conditions: VCC = 3.0 V to 3.6 V, VSS = 0 V, φ = 20 MHz to 34 MHz
Item
Clock cycle time
Clock high level pulse
width
Clock low level pulse width t
Clock rise time
Clock fall time
Reset oscillation
stabilization (crystal)
Software standby
oscillation stabilization time
(crystal)
LSI output pin
C
R
Figure 31.3 Output Load Circuit
Symbol
Min.
t
29.4
cyc
t
9.7
CH
9.7
CL
t
Cr
t
Cf
t
10
OSC1
t
8
OSC2
3 V
C = 30pF : All ports
R
= 2.4 kΩ
L
R
L
R
= 12 kΩ
H
I/O timing test levels
• Low level
H
• High level
Max.
50
5
5
Rev. 1.00 Mar. 12, 2008 Page 1127 of 1178
Section 31 Electrical Characteristics
: 0.8 V
: 1.5 V
Test
Unit
Conditions
ns
Figure 31.4
ms
Figure 31.5
Figure 31.6
REJ09B0403-0100
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