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UPD720122 Datasheet(PDF) 55 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) 55 Page - NEC

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Data Sheet S16685EJ2V0DS
55
µPD720122
(If EP1_TCB is input when retransmission is executed)
EP2_WRB
EP2_TCB
L16t64
L16t65
EP2_DRQB
EP2_DACKB
L16t70
L16t58
(e) External local bus 16-bit mode DMA EP1_Read transfer vs. EP2_Write transfer timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
L16T68
EP1_RDB vs. EP2_WRB command inactive time
34
∞
ns
Remark
It is assumed that the external pin capacitance is 15 pF (data bus = 50 pF).
EP1_DACKB
EP1_RDB
EP1_DRQB
EP2_DACKB
EP2_WRB
EP2_DRQB
L16t45
L16t57
L16t58
L16t68
Low level
Low level



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