Rev. 1.00, 09/03, page 674 of 704
Table 24.4 Clock Timing
Condition: V
CC
= 3.0 V to 3.6 V, V
SS
= 0 V,
φ
= 5 MHz to 20 MHz
Item Symbol
Min.
Max.
Unit
Reference
Clock cycle time
t
cyc
50 200
ns
Clock high pulse width
t
CH
10
Clock low pulse width
t
CL
10
Clock rise time
t
Cr
8
Clock fall time
t
Cf
8
Figure 24.3
Reset oscillation
stabilization (crystal)
t
OSC1
10
ms Figure
24.4
Software standby
oscillation stabilization time
(crystal)
t
OSC2
8
Figure
24.5
External clock output
stabilization delay time
t
DEXT
500
µs Figure
24.4
t
Cr
t
CL
t
Cf
t
CH
tcyc
Figure 24.3 System Clock Timing
t
OSC1
t
OSC1
EXTAL
VCC
φ
t
DEXT
t
DEXT
Figure 24.4 Oscillation Stabilization Timing
Содержание H8S/2437
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