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參數(shù)資料
| 型號： | UPD753304 |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機的小型通用紅外遙控器 |
| 文件頁數(shù)： | 45/56頁 |
| 文件大?。?/td> | 374K |
| 代理商： | UPD753304 |
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45
μ
PD753304
AC Characteristics (T
A
= –10 to +60
°
C, V
DD
= 2.5 to 5.5 V)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
f
CC
3.1
3.7
4.3
MHz
T
A
= 25
°
C
3.3
3.7
4.0
MHz
2.8
3.6
4.2
MHz
T
A
= 25
°
C
3.0
3.6
3.9
MHz
f
CT
V
DD
= 5.0 V
±
10 %
27
47
74
kHz
V
DD
= 3.0 V
±
10 %
27
47
74
kHz
f
duty
V
DD
= 5.0 V
±
10 %
45
55
%
V
DD
= 3.0 V
±
10 %
40
60
%
t
CY
V
DD
= 4.5 to 5.5 V
0.67
64
μ
s
V
DD
= 2.5 to 4.5 V
0.80
64
μ
s
Operates with subsystem clock
54
148
μ
s
Interrupt input high-,
low-level width
t
INTH
,
t
INTL
INT1
10
μ
s
RESET low-level width
t
RSL
10
μ
s
Notes 1.
Main system clock duty factor = high-
level width of 1 clock/1 cycle of clock
The cycle time (minimum instruction
execution time) of the CPU clock (
Φ
)
when the device operates with the main
system clock is determined by the time
constant of the internal capacitor (C:
10-pF typ.) and an externally connected
resistor (R), and by the system clock
control register (SCC) and processor
clock control register (PCC).
The cycle time of the CPU clock (
Φ
)
when the device operates with the
subsystem clock is determined by the
time constant of the internal capacitor
(C) and an internal resistor (R).
The figure on the right shows the
dependency of the cycle time t
CY
on
supply voltage V
DD
when the device
operates with the main system clock.
2.
Main system clock
frequency deviation
V
DD
= 5.0 V
±
10 %,
R = 6.8 k
V
DD
= 3.0 V
±
10 %,
R = 6.8 k
Subsystem clock frequency
deviation
Main system clock duty
factor
Note 1
CPU clock cycle time
Note 2
(Minimum instruction
execution time = 1 machine
cycle)
Operates with main
system clock
Supply voltage V
DD
[V]
0
1
2.5
2
3
4
5
6
0.5
1
2
0.8
0.67
3
4
5
6
60
64
C
C
t
CY
vs V
DD
(Operates with main system clock)
4.5
3.3
5.5
μ
Operation guaranteed range
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