Datasheet

Section 26 Electrical Characteristics
Rev. 2.00 Sep. 28, 2009 Page 822 of 870
REJ09B0429-0200
This LSI
HC0 to HC7
LED
600 Ω
Figure 26.2 LED Drive Circuit (Example)
26.3 AC Characteristics
Figure 26.3 shows the test conditions for the AC characteristics.
3 V
R
L
I/O timing test levels
• Low level : 0.8 V
• High level : 1.5 V
R
H
C
LSI output pin
C = 30pF : All ports
R
L
= 2.4 kΩ
R
H
= 12 kΩ
Figure 26.3 Output Load Circuit
26.3.1 Clock Timing
Table 26.4 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 26.5 and
26.6.