HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 625

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 18.4 External Clock Input Conditions
Item
External clock input
low pulse width
External clock input
high pulse width
External clock rise time
External clock fall time
Clock low pulse width
level
Clock high pulse width
level
Note: * ZTAT, mask ROM, and ROMless versions only.
614
EXTAL
t
EXr
Symbol
t
t
t
t
t
t
EXL
EXH
EXr
EXf
CL
CH
Figure 18.6 External Clock Input Timing
Min
40
40
—
—
0.4
80
0.4
80
V
CC
to 5.5 V
t
EXH
= 2.7 V*
Max
—
—
10
10
0.6
—
0.6
—
Min
20
20
—
—
0.4
80
0.4
80
V
CC
= 5.0 V
10%
t
EXf
Max
—
—
5
5
0.6
—
0.6
—
t
EXL
Unit
ns
ns
ns
ns
t
ns
t
ns
cyc
cyc
Test
Conditions
Figure 18.6
ø
ø < 5 MHz
ø
ø < 5 MHz
V
5 MHz
5 MHz
CC
0.5
Figure 20.4