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PDF UM2364A Data sheet ( Hoja de datos )
| Número de pieza | UM2364A | |
| Descripción | 8K x 8 NMOS ROM | |
| Fabricantes | UMC | |
| Logotipo |  |
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eUMC
UM2364/UM2364A
Features
• 8192 x 8 Bit organization
• Single +5 Volt Supply
• Access Time - 200/300/450 ns (max.)
• Totally static operation
• Completely TT L compatible
• 24 Pin JEDEC approved pinout
General Description
The UM2364 and UM2364A high performance Read Only
Memories are organ ized 8192 words by 8 bits with access
times from 200 ns to 450 ns. The ROMs are designed to
be compatible with all microprocessor and similar applica-
tions where high performance, large bit storage and simple
interfacing are important design considerations. Both
ROMs conform to the JEDEC approved pinout for 24 pin
64K ROMs.
The UM2364 offers the simplest operation (no power
down.) Its programmable chip select allows two 64K
ROMs to be OR-tied without external decoding.
• UM2364A - Automatic power down (CE)
• UM2364 - non power down version
- programmable chip select (CS)
• Three state outputs for wire-OR expansion
• EPROMs accepted as program data input
• 2564 EPROM compatible
The UM2364A offers an automatic power down feature.
Power down is controlled by the Chip Enable (CE) input.
When CE goes high, the device will automatically power
down and remain in a low power standby mode as long as
CE remains high. This unique feature provides system level
power savings as much as 90%.
Both the UM2364 and UM2364A are pin compatible with
the 2564 EPROM thus eliminating the need to redesign
printed circuit boards for volume mask programmed ROMs
after prototyping with EPROMs.
Pin Configuration
Block Diagram
A7
A6
A5
A4
A3
A2
Al
Ao
01
02
03
GND
Vee A7
As A6
A9 As
A12 A4
es A3
AlO A2
All Al
Os Ao
07 01
06 02
Os 03
04 GND
65.536 BIT
ROM ARRAY
(256 x 256)
0,
'-:-1>---0,
0,
'----:--1 :::~--'-- d.
'-------'--'--.. ~.-!-- Os
'-----;-1>--:-:-- d.
'-----~_i·~~07
'------,:>-----'---0,
• CHIP SELECT iCSI IS PROGRAMMABLE LOW ACTIVE, HIGH ACTIVE
OR DONT CARE.
1-9
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet UM2364A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| UM2364 | 8K x 8 NMOS ROM | UMC |
| UM2364A | 8K x 8 NMOS ROM | UMC |
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