Ac Characteristics - Renesas H8S Series Hardware Manual

22.7.3

AC Characteristics

(1) Clock Timing
Table 22-36 lists the clock timing
Table 22-36 Clock Timing
= 5.0 V ± 10%, AV
Condition B: V
CC
V = AV
SS
T = –40 to +85°C (wide-range specifications)
a
Condition C: V = 3.0 to 5.5 V, AV
CC
V = AV
SS
T = –40 to +85°C (wide-range specifications)
a
Item
Clock cycle time
Clock high pulse width
Clock low pulse width
Clock rise time
Clock fall time
Clock oscillator setting
time at reset (crystal)
Clock oscillator setting time
in software standby (crystal)
External clock output
stabilization delay time
= 5.0 V ± 10%, V
CC
= 0 V, ø = 2 to 20 MHz, T
SS
= 3.0 to 5.5 V, V
CC
= 0 V, ø = 2 to 13 MHz, T
SS
Symbol
t
cyc
t
CH
t
CL
t
Cr
t
Cf
t
OSC1
t
OSC2
t
DEXT
= 4.5 V to AV
ref CC
= –20 to +75°C (regular specifications),
a
= 3.0 V to AV ,
ref CC
= –20 to +75°C (regular specifications),
a
Condition B Condition C
Min Max Min Max
50 500 76 500
20 — 23 —
20 — 23 —
— 5 — 15
— 5 — 15
10 — 20 —
10 — 20 —
500 — 500 —
,
Unit Test Conditions
ns Figure 22-68
ns
ns
ns
ns
ms Figure 22-69
ms Figure 21-2
µs
Figure 22-69
Rev.6.00 Oct.28.2004 page 759 of 1016
REJ09B0138-0600H