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28.3
AC Characteristics
Figure 28.3 shows the test conditions for the AC characteristics.
28.3.1
Clock Timing
Table 28.5 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 section 25,
Clock Pulse Generator.
LSI output pin
C
R
Figure 28.3 Output Load Circuit
3 V
C = 30pF : All ports
R
= 2.4 kΩ
L
R
= 12 kΩ
R
H
L
I/O timing test levels
• Low level
• High level
H
Rev. 1.00 May 09, 2008 Page 923 of 954
Section 28 Electrical Characteristics
: 0.8 V
: 1.5 V
REJ09B0462-0100
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