Ac Characteristics; Clock Timing; The Following Ac Timing Chart Represents The Ac Characteristics, Not Signal Functions. For Signal Functions, See The Explanation In The Text; Extal Input High Level Pulse Width - Hitachi SH7032 Hardware Manual

20.2.3

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 20.18 Clock Timing
Conditions: V = 3.3 V ±0.3V, AV
CC
AV , V
CC
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
522
= 3.3 V ±0.3V, AV
CC
= 0 V, Ta = –20 to +75°C *
= AV
SS SS
12.5 MHz
Symbol Min
t 22
EXH
t 22
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
CC CC
20 MHz
Max Min Max
— 15 —
— 15 —
10 — 5
10 — 5
500 50 250
— 20 —
— 20 —
10 — 5
10 — 5
— 10 —
— 10 —
±0.3V, AV = 3.0 V to
ref
Unit Figures
ns 20.45
ns
ns
ns
ns 20.45, 20.46
ns 20.46
ns
ns
ns
ms 20.47
ms