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UPD17015GS Datasheet(PDF) 103 Page - NEC

Part # UPD17015GS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR PORTABLE RADIOS
PDF  120 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17015GS Datasheet(HTML) 103 Page - NEC

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103
µPD17015
Fig. 15-9 BTM0CY Flag Operation
(a) When BTM0CY flag not detected even once (neither SKT1 BTM0CY nor SKF1 BTM0CY executed)
STOP 0000B
3.0V
0V
H
L
H
L
H
L
V
DD
CE
BTM0CY
BTM0CY flag
set pulse
Fig. 15-8 operation
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1
(b) When power failure detected with BTM0CY flag
STOP 0000B
3.0V
0V
H
L
H
L
H
L
V
DD
CE
BTM0CY
SKT1 instruction
Fig. 15-8 operation
BTM0CY=0
Power failure
BTM0CY=1
No power failure
BTM0CY=1
No power failure
BTM0CY flag
set pulse
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