參數(shù)資料
型號(hào)： UPD75312
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁數(shù)： 44/62頁
文件大?。?/td> 577K
代理商： UPD75312
μ
PD75312(A), 75316(A)
44
MAIN SYSTEM CLOCK OSCILLATOR CIRCUIT CHARACTERISTICS
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Oscillator
Recommended
Constants
Item
Conditions
MIN.
TYP.
MAX.
Unit
Ceramic *
3
Oscillation
frequency(f
X
)*
1
1.0
5.0*
3
MHz
Oscillation stabiliza- After V
DD
came to
tion time*
2
MIN. of oscillation
voltage range
4
ms
Crystal *
3
Oscillation
frequency (f
X
)*
1
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
tion time*
2
1.0
4.19
5.0*
3
MHz
10
ms
30
ms
External Clock
X1 input frequency
(f
X
)*
1
X1 input high-,
low-level widths
(t
XH
, t
XL
)
1.0
5.0*
3
MHz
100
500
ns
*1: The oscillation frequency and X1 input frequency are indicated 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.
SUBSYSTEM CLOCK OSCILLATOR CIRCUIT CHARACTERISTICS
(T
a
= -40 to +85
°
C, V
DD
= 2.7 to 6.0 V)
Oscillator
Recommended
Constants
Item
Conditions
MIN.
TYP.
MAX.
Unit
Crystal
Oscillation
frequency (f
XT
)
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
tion time*
32
32.768
35
kHz
1.0
2
s
10
s
External Clock
XT1 input frequency
(f
XT
)*
XT1 input high-,
low-level widths
(t
XTH
, t
XTL
)
32
100
kHz
5
15
μ
s
X1
X2
C1
C2
V
DD
X1
X2
C1
C2
V
DD
X1
X2
PD74HCU04
μ
XT1
XT2
R
C3
C4
V
DD
XT1
XT2
Open
*:
Time required for oscillation to stabilize after V
DD
reaches the minimum value of the oscillation
voltage range.
#
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