Ac Characteristics; Table 22.34 Clock Timing - Hitachi H8/3062 Hardware Manual

22.4.3

AC Characteristics

Clock timing parameters are listed in table 22.34, control signal timing parameters in table 22.35,
and bus timing parameters in table 22.36. Timing parameters of the on-chip supporting modules
are listed in table 22.37.

Table 22.34 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
716
= 5.0 V ± 10%, V
CC
= 5.0 V ± 10%, V
CC
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
REF
= 4.5 to AV
REF
Condition
B
Min Max
40 500
10 —
10 —
— 10
— 10
20 —
7 —
, V = AV = 0 V,
CC SS SS
, V = AV = 0 V,
CC SS SS
Test
Unit Conditions
ns Figure 22.19 to
figure 22.31
ns
ns
ns
ns
ms Figure 22.19
ms