參數(shù)資料
型號: SMJ418160
廠商: Texas Instruments, Inc.
英文描述: 1048576 BY 16-BIT DYNAMIC RANDOM-ACCESS MEMORIES
中文描述: 1048576由16位動態(tài)隨機存取存儲器
文件頁數(shù): 1/24頁
文件大?。?/td> 356K
代理商: SMJ418160
SMJ416160, SMJ418160
1048576 BY 16-BIT
DYNAMIC RANDOM-ACCESS MEMORIES
SGMS720D – APRIL 1995 – REVISED SEPTEMBER 1997
1
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
Organization . . . 1048576 by 16 Bits
Single 5-V Power Supply (
±
10% Tolerance)
Performance Ranges:
ACCESS ACCESS ACCESS
TIME
TIME
tRAC
tCAC
MAX
MAX
’41x160-70
70 ns
18 ns
’41x160-80
80 ns
20 ns
Enhanced Page-Mode Operation for Faster
Memory Access
CAS-Before-RAS (CBR) Refresh
Long Refresh Period
– ’416160 – 4096-Cycle Refresh in 32 ms
(Maximum)
– ’418160 – 1024-Cycle Refresh in 8 ms
(Maximum)
3-State Unlatched Output
Low Power Dissipation
All Inputs/Outputs Are TTL Compatible
Packaging
50-Lead, 650-Mil-Wide Ceramic Flatpack
Operating Free-Air Temperature Range
–55
°
C to 125
°
C
READ OR
WRITE
CYCLE
MIN
130 ns
150 ns
TIME
tAA
MAX
35 ns
40 ns
description
The SMJ41x160 series is a set of 16777216-bit
dynamic random-access memories (DRAMs)
organized as 1048576 words of 16 bits each.
They employ state-of-the-art technology for high
performance, reliability, and low power at low cost.
These devices feature maximum RAS access
times of 70 ns and 80 ns. All addresses and
data-in lines are latched on-chip to simplify
system design. Data out is unlatched to allow
greater system flexibility.
The SMJ41x160 series is offered in a 50-lead,
650-mil-wide ceramic flatpack and is character-
ized for operation from –55
°
C to 125
°
C.
PIN NOMENCLATURE
A0–A11
DQ0–DQ15
LCAS
UCAS
NC
OE
RAS
VCC
VSS
W
Address Inputs
Data In/Data Out
Lower Column-Address Strobe
Upper Column-Address Strobe
No Internal Connection
Output Enable
Row-Address Strobe
5-V Supply
Ground
Write Enable
V
SS
DQ15
DQ14
DQ13
DQ12
V
SS
DQ11
DQ10
DQ9
DQ8
NC
NC
NC
NC
NC
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
50
49
48
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
V
CC
DQ0
DQ1
DQ2
DQ3
V
CC
DQ4
DQ5
DQ6
DQ7
NC
NC
NC
NC
NC
NC
W
RAS
A11
A10
A0
A1
A2
A3
V
CC
HKD PACKAGE
(TOP VIEW)
A10 and A11 are NC for SMJ418160.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
1997, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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