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UPD61P24CS датащи(PDF) 16 Page - NEC

номер детали UPD61P24CS
подробное описание детали  4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION
PDF  36 Pages
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производитель  NEC [NEC]
домашняя страница  http://www.nec.com/
Logo NEC - NEC

UPD61P24CS датащи(HTML) 16 Page - NEC

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µPD61P24
16
16. MASK OPTIONS (PLA DATA)
The following items are fixed by mask option:
•KI, S-IN pin pull-down resistor provided
• Carrier duty selection (1/3) at fOSC/12
• Hang-up detection provided
<1> KI/O ALL
The system is reset when the hang-up detection KI/O ALL switch is set to ON (“1”) by PLA data and if the
KI/O pins are in the input mode in the oscillation stop HALT mode or if even one of the KI/O pins is low.
To use a pin as a key source of the switch, turn ON the switch with PLA data.
Figure 16-1. Hang-up Detection KI/O ALL Configuration Diagram
VDD
To RESET circuit
PLA hang-up
detection
KI/O ALL switch
K
output signal
I/O0
K
output signal
I/O1
K
output signal
I/O2
K
output signal
I/O3
K
output signal
I/O4
K
output signal
I/O5
K
input/output selection
I/O
K
output signal
I/O6
K
output signal
I/O7
<2> HALT release condition specification (S-IN, KI/O, KI)
The system is reset if S-IN and KI/O are used in the HALT mode when S-IN and KI/O are specified by PLA data
not to be used (“1”). KI is used (“0”).



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