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UPD485505G-25 Datasheet(PDF) 8 Page - NEC

Part # UPD485505G-25
Description  LINE BUFFER 5K-WORD BY 8-BIT
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD485505G-25 Datasheet(HTML) 8 Page - NEC

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µPD485505
8
Data Sheet M10059EJ7V0DS00
AC Characteristics (Recommended Operating Conditions unless otherwise noted)Notes 1, 2, 3
Parameter
Symbol
µPD485505-25
µPD485505-35
Unit
Notes
MIN.
MAX.
MIN.
MAX.
Write clock cycle time
tWCK
25
35
ns
Write clock pulse width
tWCW
11
12
ns
Write clock precharge time
tWCP
11
12
ns
Read clock cycle time
tRCK
25
35
ns
Read clock pulse width
tRCW
11
12
ns
Read clock precharge time
tRCP
11
12
ns
Access time
tAC
18
25
ns
Write data-read delay time
tWAR
470
470
ns
Output hold time
tOH
55
ns
Output low-impedance time
tLZ
5
18
5
25
ns
4
Output high-impedance time
tHZ
5
18
5
25
ns
4
Input data setup time
tDS
710
ns
Input data hold time
tDH
33
ns
RSTW/RSTR Setup time
tRS
710
ns
5
RSTW/RSTR Hold time
tRH
33
ns
5
RSTW/RSTR Deselected time (1)
tRN1
33
ns
6
RSTW/RSTR Deselected time (2)
tRN2
710
ns
6
WE Setup time
tWES
710
ns
7
WE Hold time
tWEH
33
ns
7
WE Deselected time (1)
tWEN1
33
ns
8
WE Deselected time (2)
tWEN2
710
ns
8
RE Setup time
tRES
710
ns
9
RE Hold time
tREH
33
ns
9
RE Deselected time (1)
tREN1
3
3
ns
10
RE Deselected time (2)
tREN2
710
ns
10
WE Disable time
tWEW
00
ms
RE Disable time
tREW
00
ms
Write reset time
tRSTW
00
ms
Read reset time
tRSTR
00
ms
Transition time
tT
3
35
3
35
ns


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