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UPD75P218KB Datasheet(PDF) 21 Page - NEC

Part # UPD75P218KB
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  36 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75P218KB Datasheet(HTML) 21 Page - NEC

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21
µPD75P218
Notes 1. The CPU clock (
Φ) cycle time is deter-
mined by the oscillator frequency of the
connected resonator, the system clock
control register (SCC), and the processor
clock control register (PCC).
The right chart shows the cycle time tCY
characteristics for power supply voltage
VDD during the main system clock opera-
tion.
2. 2tCY or 128/fXX, depending on the setting
of the interrupt mode register (IM0).
Guaranteed
operating
range
02
3
4
5
6
1
(Main system clock)
0.5
1
2
3
4
5
6
30
32
40
tCY
VDD
vs
Power supply voltage VDD (V)



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