Ac Characteristics; Table 22.43 Clock Timing - Hitachi H8/3062 Hardware Manual

22.5.3

AC Characteristics

Clock timing parameters are listed in table 22.43, control signal timing parameters in table 22.44,
and bus timing parameters in table 22.45. Timing parameters of the on-chip supporting modules
are listed in table 22.46.

Table 22.43 Clock Timing

Condition: T = –20°C to +75°C (regular specifications),
a
T = –40°C to 85°C (wide-range specifications)
a
Condition A: V = 5.0 V ± 10%, AV
CC
fmax = 20 MHz
Condition B: V = 5.0 V ± 10%, AV
CC
fmax = 25 MHz
Item
Clock cycle time
Clock pulse low width
Clock pulse high width
Clock rise time
Clock fall time
Clock oscillator settling time
at reset
Clock oscillator settling time
in software standby
730
= 5.0 V ± 10%, V
CC
= 5.0 V ± 10%, V
CC
Condition
A
Symbol Min Max
t 50 500
cyc
t 15 —
CL
t 15 —
CH
t — 10
Cr
t — 10
Cf
t 20 —
OSC1
t 7 —
OSC2
= 4.5 to AV , V
REF CC
= 4.5 to AV , V
REF CC
B
Min Max Unit
40 500 ns
10 — ns
10 — ns
— 10 ns
— 10 ns
20 — ms
7 — ms
= AV = 0 V,
SS SS
= AV = 0 V,
SS SS
Test
Conditions
Figure 22.19 to
figure 22.31
Figure 22.19