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UPD17P228 Datasheet(PDF) 15 Page - NEC

Part # UPD17P228
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROLLER
PDF  28 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17P228 Datasheet(HTML) 15 Page - NEC

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µPD17P228
15
Data Sheet U14542EJ1V0DS00
Recommended Operating Ranges (TA = –40 to +85
°C, VDD = 2.2 to 3.6 V)
Item
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Supply voltage
VDD1
fX = 1 MHz
High-speed mode
2.2
3.6
V
(Instruction execution time: 16
µs)
VDD2
fX = 4 MHz
Ordinary mode
(Instruction execution time: 4
µs)
VDD3
fX = 8 MHz
High-speed mode
(Instruction execution time: 4
µs)
VDD4
High-speed mode
3.0
3.6
V
(Instruction execution time: 2
µs)
Oscillation frequency
fX
1.0
4.0
8.0
MHz
Operating temperature
TA
–40
+25
+85
°C
Low-voltage detector circuit
Note
TCY
432
µs
Note
Reset if the status of VDD = 2.05 V (TYP.) 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.
fX vs VDD
Supply voltage: VDD (V)
0.4
2
1
3
4
5
6
7
8
9
10
2
0
2.2
3
3.6
4
(MHZ)
Operation
guaranteed area



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