參數(shù)資料
型號: UPD75512
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): 45/64頁
文件大?。?/td> 494K
代理商: UPD75512
μ
PD75512(A)
45
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
Oscillation
frequency(f
X
)*
1
Oscillation stabiliza- After V
DD
came to
tion time*
2
V
DD
= osccillation
voltage range
1.0
5.0*
3
MHz
MIN. value of
oscillation voltage
range
4
ms
Crystal
Oscillation
frequency (f
X
)*
1
1.0
4.19
5.0*
3
MHz
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
tion time*
2
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
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*
1
frequency (f
XT
)
Oscillation stabiliza- V
DD
= 4.5 to 6.0 V
tion time*
2
32
32.768
35
kHz
1.0
2
s
10
s
External Clock
XT1 input frequency
(f
XT
)*
1
XT1 input high-,
low-level widths
(t
XTH
, t
XTL
)
32
100
kHz
5
15
μ
s
*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
#
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