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UPD720122 Datasheet(PDF) 38 Page - NEC

Part # UPD720122
Description  MOS Integrated Circuit
PDF  82 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD720122 Datasheet(HTML) 38 Page - NEC

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Data Sheet S16685EJ2V0DS
38
µPD720122
(a) CPU bus DMA read transfer vs. write transfer timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
T68
RDB vs. WRB command inactive time
34
∞
ns
Remark
It is assumed that the external pin capacitance is 15 pF (data bus = 50 pF).
EP1_DACKB
RDB
EP1_DRQB
EP2_DACKB
WRB
EP2_DRQB
t45
t57
t58
t68
Low level
Low level



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