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даташит HM624256AJP-25 PDF ( Datasheet )

HM624256AJP-25 Datasheet Download - Hitachi Semiconductor

Номер произв HM624256AJP-25
Описание 262144-word x 4-bit High Speed CMOS Static RAM
Производители Hitachi Semiconductor
логотип Hitachi Semiconductor логотип 

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HM624256AJP-25 Даташит, Описание, Даташиты
HM624256A Series
262144-word × 4-bit High Speed CMOS Static RAM
Rev. 0.0
Dec. 1, 1995
Description
The Hitachi HM624256A is a high speed 1M Static RAM organized as 262,144-word × 4-bit. It realizes
high speed access time (20/25/35 ns) and low power consumption, employing CMOS process technology
and high speed circuit designing technology. It is most advantageous for the field where high speed and
high density memory is required, such as the cache memory for main frame or 32-bit MPU. The
HM624256A, packaged in a 400-mil plastic SOJ is available for high density mounting.
Features
Single 5 V supply and high density 28-pin package (DIP and SOJ)
High speed
Access time: 20/25/35 ns (max)
Low power dissipation
Active mode: 350 mW (typ)
Standby mode: 100 µW (typ)
Completely static memory
No clock or timing strobe required
Equal access and cycle time
Directly TTL compatible
All inputs and outputs







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HM624256AJP-25 Даташит, Описание, Даташиты
HM624256A Series
Ordering Information
Type No.
Access Time Package
HM624256AP-20
HM624256AP-25
HM624256AP-35
20 ns
25 ns
35 ns
400 mil 28-pin plastic DIP (DP-28C)
HM624256ALP-20 20 ns
HM624256ALP-25 25 ns
HM624256ALP-35 35 ns
HM624256AJP-20
HM624256AJP-25
HM624256AJP-35
20 ns
25 ns
35 ns
400 mil 28-pin plastic SOJ (CP-28D)
HM624256ALJP-20 20 ns
HM624256ALJP-25 25 ns
HM624256ALJP-35 35 ns
2







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HM624256AJP-25 Даташит, Описание, Даташиты
Pin Arrangement
HM624256A Series
A0 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
A9 10
A10 11
CS 12
OE 13
VSS 14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(Top view)
VCC
A17
A16
A15
A14
A13
A12
A11
NC
I/O 1
I/O 2
I/O 3
I/O 4
WE
Pin Description
Pin Name
A0 – A17
I/O1 – I/O4
CS
OE
WE
VCC
VSS
Function
Address
Input/output
Chip select
Output enable
Write enable
Power supply
Ground
3










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