h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 602

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 20 Clock Pulse Generator
Table 20.3 shows the input conditions for the external clock.
Table 20.3 External Clock Input Conditions
Rev. 2.00 Dec. 05, 2005 Page 564 of 724
REJ09B0200-0200
Item
External clock input low
pulse width
External clock input high
pulse width
External clock rise time
External clock fall time
EXTAL
t
EXr
Figure 20.5 External Clock Input Timing
Symbol
t
t
t
t
EXL
EXH
EXr
EXf
t
EXH
Min.
15
15


V
CC
= 5.0 V ± 10%
Max.


5
5
t
EXf
t
EXL
Unit
ns
ns
ns
ns
Test Conditions
Figure 20.5
V
CC
× 0.5