參數(shù)資料
型號: UPD17228
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(jī)的小型通用紅外遙控器
文件頁數(shù): 66/84頁
文件大小: 393K
代理商: UPD17228
μ
PD17225, 17226, 17227, 17228
66
Data Sheet U12643EJ2V0DS00
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
Ordinary mode
(Instruction execution time: 4
μ
s)
V
DD3
f
X
= 8 MHz
High-speed 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
1.0
4.0
8.0
MHz
Operating Temperature
T
A
–40
+25
+85
°
C
Low-Voltage Detector Circuit
Note
(Mask Option)
T
CY
4
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 (when the RESET pin and WDOUT pin are
connected). Some oscillators stop oscillating before the reset function is effected.
Remark
The region indicated by the broken line 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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