
HD404358 Series
92
Standard f
OSC
= 5.0 MHz Version AC Characteristics (HD404354/HD404356/HD404358: V
CC
= 2.7 to
6.0 V, GND = 0 V, T
a
= –20 to +75
°
C)
Item
Symbol Pins
Min
Typ
Max
Unit
Test Condition
Note
Clock oscillation
frequency
f
OSC
OSC
1
, OSC
2
0.4
4
5.0
MHz 1/4 system clock
division ratio
Instruction cycle time
t
cyc
t
RC
0.8
1
10
μ
s
Oscillation stabilization
time (ceramic oscillator)
OSC
1
, OSC
2
—
—
7.5
ms
1
Oscillation stabilization
time (crystal oscillator)
t
RC
OSC
1
, OSC
2
—
—
40
ms
1
External clock high
width
t
CPH
OSC
1
80
—
—
ns
2
External clock low width t
CPL
External clock rise time
OSC
1
OSC
1
OSC
1
INT
,
INT
1
,
EVNB
INT
,
INT
1
,
EVNB
RESET
STOPC
RESET
STOPC
80
—
—
ns
2
t
CPr
t
CPf
t
IH
—
—
20
ns
2
External clock fall time
INT
,
INT
1
, EVNB high
widths
INT
,
INT
1
, EVNB low
widths
RESET
low width
STOPC
low width
RESET
rise time
STOPC
rise time
—
—
20
ns
2
2
—
—
t
cyc
3
t
IL
2
—
—
t
cyc
3
t
RSTL
t
STPL
t
RSTr
t
STPr
C
in
2
—
—
t
cyc
t
RC
ms
4
1
—
—
5
—
—
20
4
—
—
20
ms
5
Input capacitance
All input pins
except and R2
—
—
15
pF
f = 1 MHz, V
in
= 0 V
R2
—
—
30
pF
f = 1 MHz, V
in
= 0 V
Notes: 1. The oscillation stabilization time is the period required for the oscillator to stabilize in the
following situations:
a.
After V
CC
reaches 2.7 V at power-on.
b.
After
RESET
input goes low when stop mode is cancelled.
c.
After
STOPC
input goes low when stop mode is cancelled.
To ensure the oscillation stabilization time at power-on or when stop mode is cancelled,
RESET
or
STOPC
must be input for at least a duration of t
RC
.
When using a crystal or ceramic oscillator, consult with the manufacturer to determine what
stabilization time is required, since it will depend on the circuit constants and stray capacitance.
2. Refer to figure 77.
3. Refer to figure 78.
4. Refer to figure 79.
5. Refer to figure 80.