Rev. 2.00, 09/03, page 636 of 690
25.3.2
Control Signal Timing
Table 25.6
Control Signal Timing
(Conditions: V
CC
Q = V
CC
-RTC = V
CC
-USB = 3.0 to 3.6 V, V
CC
= V
CC
-PLL1 = V
CC
-PLL2 = 1.4 to
1.6 V, AV
CC
= 3.0 to 3.6 V, V
SS
Q = V
SS
= V
SS
-RTC = V
SS
-USB = V
SS
-PLL1 = V
SS
-PLL2 =
AV
SS
= 0 V, T
a
= –20 to 75°C, Clock mode 0/1/2/4/5/6/7)
66.67 MHz
*
2
Item
Symbol
Min
Max
Unit
Figure
RESETP
pulse width
t
RESPW
20
*
3
—
t
cyc
25.12
RESETP
setup time
*
1
t
RESPS
20
—
ns
RESETM
pulse width
t
RESMW
20
*
4
—
t
cyc
RESETM
setup time
t
RESMS
10
—
ns
BREQ
setup time
t
BREQS
1/2 t
cyc
+10 —
ns
25.14
BREQ
hold time
t
BREQH
1/2 t
cyc
+3
—
ns
NMI setup time
*
1
t
NMIS
10
—
ns
25.13
NMI hold time
t
NMIH
3
—
ns
IRQ5 to IRQ0 setup time
*
1
t
IRQS
10
—
ns
IRQ5 to IRQ0 hold time
t
IRQH
3
—
ns
BACK
delay time
t
BACKD
—
1/2 t
cyc
+13 ns
25.14
STATUS1, STATUS0 delay time
t
STD
—
18
ns
25.15
Bus tri-state delay time 1
t
BOFF1
0
30
ns
25.14,
Bus tri-state delay time 2
t
BOFF2
0
30
ns
25.15
Bus buffer-on time 1
t
BON1
0
30
ns
Bus buffer-on time 2
t
BON2
0
30
ns
Notes: t
cyc
is the external bus clock cycle (B clock cycle).
1.
RESETP
,
RESETM
, NMI, and IRQ5 to IRQ0 are asynchronous. Changes are detected
at the clock rise when the setup shown is kept. When the setup cannot be kept,
detection can be delayed until the next clock rises.
2. The upper limit of the external bus clock is 66.67 MHz.
3. In standby mode, t
RESPW
= t
OSC2
(10 ms). When the crystal oscillation continues or the
clock multiplication ratio is changed in standby mode, t
RESPW
= t
PLL1
(100 µs).
4. In standby mode, t
RESMW
= t
OSC2
(10 ms). When the crystal oscillation continues or the
clock multiplication ratio is changed in standby mode,
RESETM
must be kept low until
STATUS (0-1) changes to reset (HH).
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