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參數(shù)資料
| 型號： | UPD1724x |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| 中文描述： | 4位單片微控制器的小型通用兩用紅外遙控遞質(zhì) |
| 文件頁數(shù)： | 89/102頁 |
| 文件大?。?/td> | 461K |
| 代理商： | UPD1724X |
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89
Data Sheet U15002EJ1V0DS
μ
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
Recommended Operating Ranges (T
A
= –40 to +85
°
C, V
DD
= 2.0 to 3.6 V)
Item
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Supply Voltage
V
DD1
f
X
= 1 MHz
High-speed mode
(Instruction execution time: 16
μ
s)
2.0
3.6
V
V
DD2
f
X
= 4 MHz
High-speed mode
(Instruction execution time: 4
μ
s)
V
DD3
f
X
= 8 MHz
Normal mode
(Instruction execution time: 4
μ
s)
V
DD4
High-speed mode
(Instruction execution time: 2
μ
s)
2.2
3.6
V
Oscillation frequency
f
X
Rf
X
= f
X
/2 or f
X
1.0
4.0
8.0
MHz
Rf
X
= 2f
X
3.5
4.0
4.5
MHz
Operating temperature
T
A
–40
+25
+85
°
C
Low-voltage detector
Note
(Mask option)
t
CY
3.5
32
μ
s
Note
Reset if the status of V
DD
= 1.7 to 2.0 V lasts for 1 ms or longer. Program hang-up does not occur even
if the voltage drops, until the reset function is effected. A resonator may stop oscillating before the reset
function is effected if normal operation under the low voltage is not guaranteed.
Caution Design the application circuit so that the RESET pin goes low when the supply voltage is less
than 2.2 V.
Remark
The region indicated by the broken lines in the above figure is the guaranteed operating range in the
high-speed mode.
f
X
vs V
DD
Supply voltage V
DD
(V)
0.4
2
1
3
4
5
6
7
8
9
10
2
0
2.2
3
3.6
4
(
S
X
(MH
Z
)
Operation
guaranteed area
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