Datasheet

Section 25 Electrical Characteristics
Rev. 4.00 Jun 06, 2006 page 800 of 1004
REJ09B0301-0400
25.6 Operational Timing
This section shows timing diagrams.
Figure 25.4 shows the test conditions for the AC characteristics.
C
Chip output
pin
R
H
R
L
C = 30 pF: All output ports
R
L
= 2.4 kΩ
R
H
= 12 kΩ
I/O timing test levels
• Low level: 0.8 V
• High level: 2.0 V
V
CC
Figure 25.4 Output Load Circuit
25.6.1 Clock Timing
t
CH
t
cyc
t
Cf
t
CL
t
Cr
φ
Figure 25.5 System Clock Timing