h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 497
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h8s-2172
Manufacturer Part Number
h8s-2172
Description
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2172.pdf
(570 pages)
- Current page: 497 of 570
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Table 15.3 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
Clock high pulse width
EXTAL
EXTAL
EXTAL
XTAL
XTAL
t
EXr
Figure 15.4 External Clock Input (Examples)
Figure 15.5 External Clock Input Timing
Symbol
t
t
t
t
t
t
EXL
EXH
EXr
EXf
CL
CH
(b) Counter clock input at XTAL pin
t
EXH
(a) XTAL pin left open
Min.
10
10
—
—
0.4
0.4
V
CC
= 3.0 V to 3.6 V
Open
Max.
—
5
5
0.6
0.6
t
EXf
t
EXL
External clock input
External clock input
Rev. 2.00, 03/04, page 465 of 534
Unit
ns
ns
ns
ns
t
t
cyc
cyc
V
CC
Test
Figure 15.5
Figure 18.2
Conditions
× 0.5
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