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UPD4481321 Datasheet(PDF) 7 Page - NEC

Part # UPD4481321
Description  8M-BIT ZEROSB SRAM FLOW THROUGH OPERATION
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD4481321 Datasheet(HTML) 7 Page - NEC

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Data Sheet M15561EJ3V0DS
µPD4481161, 4481181, 4481321, 4481361
[
µµµµPD4481321GF, µµµµPD4481361GF]
Symbol
Pin No.
Description
A0 to A17
37, 36, 35, 34, 33, 32, 100, 99, 82, 81, 44,
Synchronous Address Input
45, 46, 47, 48, 49, 50, 83
I/O1 to I/O32
52, 53, 56, 57, 58, 59, 62, 63, 68, 69, 72,
Synchronous Data In,
73, 74, 75, 78, 79, 2, 3, 6, 7, 8, 9, 12, 13,
Synchronous / Asynchronous Data Out
18, 19, 22, 23, 24, 25, 28, 29
I/OP1, NC
Note
51
Synchronous Data In (Parity),
I/OP2, NC
Note
80
Synchronous / Asynchronous Data Out (Parity)
I/OP3, NC
Note
1
I/OP4, NC
Note
30
ADV
85
Synchronous Address Load / Advance Input
/CE, CE2, /CE2
98, 97, 92
Synchronous Chip Enable Input
/WE
88
Synchronous Write Enable Input
/BW1 to /BW4
93, 94, 95, 96
Synchronous Byte Write Enable Input
/G
86
Asynchronous Output Enable Input
CLK
89
Clock Input
/CKE
87
Synchronous Clock Enable Input
MODE
31
Asynchronous Burst Sequence Select Input
Have to tied to VDD or VSS during normal operation
ZZ
64
Asynchronous Power Down State Input
VDD
15, 16, 41, 65, 91
Power Supply
VSS
14, 17, 40, 66, 67, 90
Ground
VDDQ
4, 11, 20, 27, 54, 61, 70, 77
Output Buffer Power Supply
VSSQ
5, 10, 21, 26, 55, 60, 71, 76
Output Buffer Ground
NC
38, 39, 42, 43, 84
No Connection
Note NC (No Connection) is used in the
µPD4481321GF.
I/OP1 to I/OP4 are used in the
µPD4481361GF.


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