Ac Characteristics - Hitachi H8S/2646 Hardware Manual

23.4

AC Characteristics

Figure 23-2 show, the test conditions for the AC characteristics.
LSI output pin
C = 50 pF: Ports A to F
C = 30 pF: All ports except ports A to F
R = 2.4 kΩ
L
R = 12 kΩ
H
Input/output timing measurement levels
· Low level : 0.8 V
· High level : 2.0 V
760
C
R
H
(In case of expansion bus control signal output pin setting)
Figure 23-2 Output Load Circuit
5 V
R
L