Renesas F-ZTAT H8 Series, Hardware Manual

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16. Electrical Characteristics (H8/3854 Group)
Rev.3.00 Jul. 19, 2007 page 431 of 532
REJ09B0397-0300
16.2.3 AC Characteristics
Table 16.4 shows the control signal timing, and table 16.5 shows the serial interface timing, of the
H8/3852, H8/3853, and H8/3854.
Table 16.4 Control Signal Timing of H8/3852, H8/3853, and H8/3854
V
CC
= 2.7 V to 5.5 V of the mask ROM version of H8/3852, H8/3853, and H8/3854,
V
CC
= 3.0 V to 5.5 V of H8/3854F, V
SS
= 0.0 V, T
a
= –20°C to +75°C*
3
, including subactive mode,
unless otherwise specified.
Applicable
Values
Reference
Item Symbol Pins Test Conditions Min Typ Max Unit Figure
System clock
oscillation frequency f
OSC
OSC1, OSC2 V
CC
= 4.0 V to 5.5 V 2.0
2.0
⎯
⎯
10.0
5.0
MHz
OSC clock (
φ
OSC
)
cycle time
t
OSC
OSC1, OSC2 V
CC
= 4.0 V to 5.5 V 100.0
200.0
⎯
⎯
1000.0
1000.0
ns *
1
Figure 16.1
System clock (
φ
)
cycle time
t
cyc
2
⎯
⎯
⎯
16
2000.0
t
OSC
ns
*
1
Subclock oscillation
frequency f
W
X1, X2
⎯
32.768
⎯
kHz
Watch clock (
φ
W
)
cycle time
t
W
X1, X2
⎯
30.5
⎯ μ
s
Subclock (
φ
SUB
)
cycle time
t
subcyc
2
⎯
8 t
W
*
2
Instruction cycle time 2
⎯ ⎯
t
cyc
t
subcyc
Oscillation
stabilization time
(crystal oscillator) t
rc
OSC
1
, OSC
2
V
CC
= 4.0 V to 5.5 V 40.0
60.0
⎯
⎯
⎯
⎯
ms
Oscillation
stabilization time t
rc
X
1
, X
2
2
⎯ ⎯
s
External clock high
width t
CPH
OSC
1
V
CC
= 4.0 V to 5.5 V 40.0
80.0
⎯
⎯
⎯
⎯
ns Figure 16.1
External clock low
width t
CPL
OSC
1
V
CC
= 4.0 V to 5.5 V 40.0
80.0
⎯
⎯
⎯
⎯
ns Figure 16.1
External clock rise
time t
CPr
OSC
1
V
CC
= 4.0 V to 5.5 V
⎯
⎯
⎯
⎯
15.0
20.0
ns Figure 16.1
External clock fall
time t
CPf
OSC
1
V
CC
= 4.0 V to 5.5 V
⎯
⎯
⎯
⎯
15.0
20.0
ns Figure 16.1