Ac Characteristics; Clock Timing - Hitachi SH7032 Hardware Manual

20.1.3 AC Characteristics
The following AC timing chart represents the AC characteristics, not signal functions. For signal
functions, see the explanation in the text.
(1) Clock Timing
Table 20.4 Clock Timing
Case A: V = 3.0 to 5.5 V, AV
CC
V = AV
SS SS
Case B: V = 5.0 V ±10%, AV
CC
V = AV
SS SS
Note: * Regular-specification products; for wide-temperature-range products, Ta = -40 to +85°C
Item
EXTAL input high level
pulse width
EXTAL input low level
pulse width
EXTAL input rise time
EXTAL input fall time
Clock cycle time
Clock high pulse width
Clock low pulse width
Clock rise time
Clock fall time
Reset oscillation settling
time
Software standby
oscillation settling time
472
= 3.0 to 5.5 V, AV
CC
= 0 V, Ta = -20 to +75°C * )
= 5.0 V ±10%, AV
CC
= 0 V, Ta = -20 to +75°C * )
Case A
12.5 MHz
Sym-
bol Min
t 20
EXH
t 20
EXL
t -
EXr
t -
EXf
t 80
cyc
t 30
CH
t 30
CL
t -
Cr
t -
Cf
t 10
OSC1
t 10
OSC2
= V ±10%, AV
CC CC
= V ±10%, AV
CC CC
Case B
20 MHz
Max Min
- 10
- 10
10 -
10 -
500 50
- 20
- 20
10 -
10 -
- 10
- 10
= 3.0 V to AV
ref
= 4.5 V to AV
ref
Max Unit Figures
- ns 20.1
- ns
5 ns
5 ns
500 ns 20.1, 20.2
- ns 20.2
- ns
5 ns
5 ns
- ms 20.3
- ms
,
CC
,
CC