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PDF UM6104-1 Data sheet ( Hoja de datos )
| Número de pieza | UM6104-1 | |
| Descripción | 1K x 4 CMOS SRAM | |
| Fabricantes | UMC | |
| Logotipo |  |
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(l)UMC
UM6J.04-J.
CMOS SRAM
Features
• 2.5V minimum operating voltage
• Low power standby
• Low power operation
• Chip access time: 2.0 /J.s
• Data retention: 2.0V min.
• Three-state outputs
• On-chip address register
• Synchronous circuitry
• Standard 18 pin DIP package
• No clock required (complete static circuit)
General Description
The UM6104-1 is a nonclocked cMos static RAM or-
ganized as 1024 words by 4-bits. Since 1Kx4 CMOS static
RAM is usually used in low voltage or low power consump-
tion situation, such as telephonic equipments and portable
equipments, UMC creates a new product version, UM6104-1
to serve these requirements. UM6104-1 dissif)ates very
little current at the data retention mode and is suitable for
use in non-volatile RAM applications with battery backup.
Pin Configuration
Block Diagram
A4
As
A6 LATCHED
A7 ADDRESS
A6
Vce As
REGISTER
As A7 A9
A4 As
A'
3
A9 1/01
1/02
Ao 1/01 1/03
Al 1/02 1/04
A2 1/03
CE 1/04
GND WE
WE
ROW
CE
2-23
MEMORY
MATRIX
64x64
VCC
GND
LATCHED
ADDRESS
REGISTER
Ao Al A2 A3
1 page  
UM6104·1
READ MODIFY WRITE CYCLE TIMING DIAGRAM
r~.~-----------------------tc
A~-tA-s-V-A-L-I-D-tA-H-~
tCE
tRS -t-------
~~~~~---------------------~ ~----------tWD
I/O HIGH-Z
(OUT) -------------~y~~~~~~~,~,~~---~
I/O HIGH-Z
(IN) --------------------~
2114 COMPATIBILITY
i4---------------------------"'!"--------------------A-=-D-=-D-R=-:-:-:-V-A-L-I-D-----------------------~ NEXT
~ADD
/111/////;
~------------------------- TELEL' --------------------------~·I
ADD
COMPATIBLE TIMING
)(~ ~_______________________A_D_D_R_E_S_S_V_A_L_I_D________________________
CS,CE ~__________________________________________________~~
2114 - REQUIRES THE ADDRESS TO REMAIN VALID
THROUGHOUT THE CYCLE,
UM6104-1 - REQUIRES VALID ADDRESS FOR ONLY
A SMALL PORTION OF THE CYCLE, BUT
REQUIRESCEtCFALL TO INITIATE
EACH CYCLE,
2-27
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet UM6104-1.PDF ] | |
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