Rev. 3.0, 10/02, page 655 of 686
24.4.1
Clock Timing
Table 24.4 lists the clock timing
Table 24.4
Clock Timing
Conditions: V
CC
= PLL V
CC
=Dr V
CC
=2.7 V to 3.6 V, Vref=2.7 V to AV
CC
, V
SS
= PLLAV
SS
=
Dr V
SS
=AV
SS
= 0 V,
φ
=13 MHz to 16 MHz,
T
a
= –20°C to +75°C (regular specifications), T
a
= –40°C to +85°C (wide-range
specifications)
Item
Symbol
Min
Max
Unit
Test Conditions
Clock cycle time
t
cyc
62.5
76.9
ns
Figure 24.3
Clock high pulse width
t
CH
20
—
ns
Clock low pulse width
t
CL
20
—
ns
Clock rise time
t
Cr
—
10
ns
Clock fall time
t
Cf
—
10
ns
Oscillation stabilization time at
reset (crystal)
t
OSC1
20
—
ms
Figure 24.4
Oscillation stabilization time in
software standby (crystal)
t
OSC2
8
—
ms
Figure 22.3
External clock output
stabilization delay time
t
DEXT
500
—
µs
Figure 24.4
USB operating clock (48 MHz)
stabilization time
t
OSC3
8
—
ms
V
CC
=3.0 to 3.6V
USB operating clock (48 MHz)
oscillator frequency
f
48
48
MHz
USB operating clock (48 MHz)
cycle time
f
48
20.8
ns
t
Cr
t
CL
t
Cf
t
CH
φ
t
cyc
Figure 24.3 System Clock Timing
Summary of Contents for H8S/2215 Series
Page 4: ...Rev 3 0 10 02 page iv of lviii ...
Page 6: ...Rev 3 0 10 02 page vi of lviii ...
Page 28: ...Rev 3 0 10 02 page xxviii of lviii ...
Page 122: ...Rev 3 0 10 02 page 64 of 686 ...
Page 132: ...Rev 3 0 10 02 page 74 of 686 ...
Page 156: ...Rev 3 0 10 02 page 98 of 686 ...
Page 198: ...Rev 3 0 10 02 page 140 of 686 ...
Page 320: ...Rev 3 0 10 02 page 262 of 686 ...
Page 384: ...Rev 3 0 10 02 page 326 of 686 ...
Page 474: ...Rev 3 0 10 02 page 416 of 686 ...
Page 608: ...Rev 3 0 10 02 page 550 of 686 ...
Page 614: ...Rev 3 0 10 02 page 556 of 686 ...
Page 650: ...Rev 3 0 10 02 page 592 of 686 ...
Page 652: ...Rev 3 0 10 02 page 594 of 686 ...
Page 680: ...Rev 3 0 10 02 page 622 of 686 ...
Page 732: ...Rev 3 0 10 02 page 674 of 686 ...
Page 740: ...Rev 3 0 10 02 page 682 of 686 ...