Renesas H8/38024 Series, Hardware Manual

Page: 494 / 661

Rev. 6.00, 08/04, page 464 of 628
16.4.3 AC Characteristics
Table 16.9 lists the control signal timing, and tables 16.10 lists the serial interface timing of the
H8/38024F.
Table 16.9 Control Signal Timing
V
CC
= 2.7 V to 3.6 V, AV
CC
= 2.7 V to 3.6 V, V
SS
= AV
SS
= 0.0 V
Values
Item Symbol
Applicable
Pins
Min Typ Max Unit Test Condition
Reference
Figure
System clock
oscillation
frequency f
OSC
OSC
1
, OSC
2
2.0 — 10.0 MHz
OSC clock (
φ
OSC
)
cycle time
t
OSC
OSC
1
, OSC
2
100 — 500
(1000) ns Figure 16.1
* 2
t
cyc
2 — 128 t
OSC
System clock (
φ
)
cycle time
— — 128 µs
Subclock oscillation
frequency f
W
X
1
, X
2
— 32.768
or 38.4 — kHz
Watch clock (
φ
W
)
cycle time
t
W
X
1
, X
2
— 30.5 or
26.0 — µs Figure 16.1
Subclock (
φ
SUB
)
cycle time
t
subcyc
2 — 8 t
W
* 1
Instruction cycle
time 2 — — t
cyc
t
subcyc
Oscillation
stabilization time t
rc
OSC
1
, OSC
2
— 0.8 2.0 ms Figure 16.9
(crystal oscillator) Figure 16.9
* 3
— 2.0 6.0 ms Figure 16.8
(crystal oscillator) Figure 16.8
* 4
— 20 45 µs Figure 16.9
(ceramic oscillator) Figure 16.9
* 3
— 20 45 µs Figure 16.8
(ceramic oscillator) Figure 16.8
* 4
— — 50 ms Except the above
X
1
, X
2
— — 2.0 s
t
CPH
OSC
1
40 — — ns Figure 16.1 External clock high
width
X
1
— 15.26
or
13.02 — µs