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Número de pieza | AD408M91RLB-5 | |
Descripción | CMOS Dynamic RAM | |
Fabricantes | ETC | |
Logotipo | ![]() |
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ASCEND
Semiconductor
4Mx4 EDO
Data sheet
Rev.1
Page 1
1 page ![]() ![]() Block Diagram
WE
CAS
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
RAS
NO. 2 CLOCK
GENERATOR
COLUMN
ADDRESS
BUFFERS (11)
REFRESH
CONTROLLER
REFRESH
COUNTER
ROW
ADDRESS
BUFFERS (11)
NO. 1 CLOCK
GENERATOR
CONTROL
LOGIC
DATA-IN BUFFER
COLUMN
DECODER
2048
SENSE AMPLIFIERS
I/O GATING
2048x4
DATA-OUT
BUFFER
2048x2048x4
MEMORY
ARRAY
DQ. 1
.
DQ4
OE
Vcc
Vss
Rev.1
Page 5
5 Page ![]() ![]() Read Cycle
Parameter
Access time from RAS
Access time from CAS
Access time from column address
Access time from OE
Read command setup time
Read command hold time to CAS
Read command hold time to RAS
Output buffer turn-off time
Output buffer turn-off time from OE
Write Cycle
Parameter
Write command setup time
Write command hold time
Write command pulse width
Write command to RAS lead time
Write command to CAS lead time
Data-in setup time
Data-in hold time
WE to Data-in delay
Symbol
tRAC
tCAC
tAA
tOEA
tRCS
tRCH
tRRH
tOFF
tOEZ
AD404M42V
-5 -6
Min Max Min Max
- 50
- 60
- 14
- 15
- 25
- 30
- 12
- 15
0 -0 -
0 -0 -
0 -0 -
0 12
0 15
0 12
0 15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
12
13, 14
14, 15
7
10, 16
16
17
17
Symbol
tWCS
tWCH
tWP
tRWL
tCWL
tDS
tDH
tWED
AD404M42V
-5 -6
Min Max Min Max
0 -0 -
8 - 10 -
8 - 10 -
13 - 15 -
8 - 10 -
0 -0 -
8 - 10 -
10 - 10 -
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Notes
7, 18
19
19
Rev.1
Page 11
11 Page |
Páginas | Total 28 Páginas | |
PDF Descargar | [ Datasheet AD408M91RLB-5.PDF ] |
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