µ
PD75512
45
MAIN SYSTEM CLOCK OSCILLATOR CIRCUIT CHARACTERISTICS
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Oscillator
Recommended
Item
Conditions
MIN.
TYP.
MAX.
Unit
Constants
Ceramic
Oscillation
V
DD
= osccillation
1.0
5.0
*
3
MHz
frequency(f
X
)*
1
voltage range
Oscillation stabiliza- After V
DD
came to
tion time*
2
MIN. of oscillation
voltage range
4
ms
Crystal
Oscillation
1.0
4.19
5.0
*
3
MHz
frequency (f
X
)*
1
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
10
ms
tion time*
2
30
ms
External Clock
X1 input frequency
1.0
5.0
*
3
MHz
(f
X
)*
1
X1 input high-,
low-level widths
(t
XH
, t
XL
)
100
500
ns
SUBSYSTEM CLOCK OSCILLATOR CIRCUIT CHARACTERISTICS
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Oscillator
Recommended
Item
Conditions
MIN.
TYP.
MAX.
Unit
Constants
Crystal
Oscillation*
1
32
32.768
35
kHz
frequency (f
XT
)
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
1.0
2
s
tion time*
2
10
s
External Clock
XT1 input frequency
32
100
kHz
(f
XT
)*
1
XT1 input high-,
low-level widths
5
15
µ
s
(t
XTH
, t
XTL
)
*1: Only to express the characteristics of the oscillator circuit. For instruction execution time, refer to AC
Characteristics.
2: Time required for oscillation to stabilize after V
DD
reaches the minimum value of the oscillation voltage
range or the STOP mode has been released.
3: When the oscillation frequency is 4.19 MHz
<
fx
≤
5.0 MHz, do not select PCC = 0011 as the instruction
execution time: otherwise, one machine cycle is set to less than 0.95
µ
s, falling short of the rated
minimum value of 0.95
µ
s.
X1
X2
C1
C2
X1
X2
C1
C2
X1
X2
PD74HCU04
µ
XT1
XT2
R
C3
C4
XT1
XT2
Open
Содержание mPD75512
Страница 66: ...µPD75512 66 APPENDIX B RELATED DOCUMENTS ...