Datasheet

Section 27 Electrical Characteristics (H8S/2215C)
REJ09B0140-0900 Rev. 9.00 Page 813 of 846
Sep 16, 2010
H8S/2215 Group
27.4.1 Clock Timing
Table 27.4 lists the clock timing
Table 27.4 Clock Timing
Condition: V
CC
= PLLV
CC
= DrV
CC
= 3.0 V to 3.6 V, AV
CC
= 3.0 V to 3.6 V, V
ref
= 3.0 V to AV
CC
,
V
SS
= PLLV
SS
= DrV
SS
= AV
SS
= 0 V, φ = 16 MHz to 24 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
41.6 62.5 ns Figure 27.3
Clock high pulse width t
CH
13 — ns
Clock low pulse width t
CL
13 — ns
Clock rise time t
Cr
— 7 ns
Clock fall time t
Cf
— 7 ns
Oscillation stabilization time at
reset (crystal)
t
OSC1
20 — ms Figure 27.4
Oscillation stabilization time in
software standby (crystal)
t
OSC2
8 — ms C
L1
= C
L2
= 10 pF to 22
pF in figure
21.2
Figure 22.3
4 — ms C
L1
= C
L2
= 10 pF to 15
pF in figure
21.2
Figure 22.3
External clock output stabilization
delay time
t
DEXT
500 — µs Figure 27.4
USB operating clock (48 MHz)
stabilization time
t
OSC3
8 — ms
USB operating clock (48 MHz)
oscillator frequency
f
48
4.8 MHz
USB operating clock (48 MHz)
cycle time
f
48
20.8 ns