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GM72V28841ALT-7K Datasheet

  • GM72V28841ALT-7K

  • x8 SDRAM

  • 21頁

  • ETC

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GM72V28841AT/ALT
4Banks x 4M x 8Bit Synchronous DRAM
Description
The GM72V28841AT/ALT is a synchronous
dynamic random access memory comprised of
134,217,728 memory cells and logic including
input and output circuits operating synchronously
by referring to the positive edge of the externally
provided Clock.
The GM72V28841AT/ALT provides four
banks of 4,194,304 word by 8 bit to realize high
bandwidth with the Clock frequency up to 133
Mhz.
Pin Configuration
VCC
DQ0
VCCQ
NC
DQ1
VSSQ
NC
DQ2
VCCQ
NC
DQ3
VSSQ
NC
VCC
NC
/WE
/CAS
/RAS
/CS
BA0/A13
BA1/A12
A10,AP
A0
A1
A2
A3
VCC
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
26
27
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
Features
* PC133/PC100/PC66 Compatible
-75(133MHz)/-8(125MHz)
-7K(PC100,2-2-2)/-7J(PC100,3-2-2)
-10K(PC66)
* 3.3V single Power supply
* LVTTL interface
* Max Clock frequency
100/125/133 MHz
* 4,096 refresh cycle per 64 ms
* Two kinds of refresh operation
Auto refresh/ Self refresh
* Programmable burst access capability ;
- Sequence:Sequential / Interleave
- Length :1/2/4/8/FP
* Programmable CAS latency : 2/3
* 4 Banks can operate independently or
simultaneously
* Burst read/burst write or burst read/single
write operation capability
* Input and output masking by DQM input
* One Clock of back to back read or write
command interval
* Synchronous Power down and Clock
suspend capability with one Clock latency
for both entry and exit
* JEDEC Standard 54Pin 400mil TSOP II
Package
JEDEC STANDARD
400 mil 54 PIN TSOP II
(TOP VIEW)
VSS
DQ7
VSSQ
NC
DQ6
VCCQ
NC
DQ5
VSSQ
NC
DQ4
VCCQ
NC
VSS
NC
DQM
CLK
CKE
NC
A11
A9
A8
A7
A6
A5
A4
VSS
Pin Name
CLK
CKE
CS
RAS
CAS
WE
A0~A9,A11
A10 / AP
BA0/A13
~BA1/A12
DQ0~DQ7
DQM
VCCQ
VSSQ
VCC
VSS
NC
Clock
Clock Enable
Chip Select
Row Address Strobe
Column Address Strobe
Write Enable
Address input
Address input or Auto Precharge
Bank select
Data input / Data output
Data input / output Mask
V
CC
for DQ
V
SS
for DQ
Power for internal circuit
Ground for internal circuit
No Connection
This document is a general product description and is subject to change without notice. Hyundai Electronics does not assume any
responsibility for use of circuits described. No patent licenses are implied.
Rev. 1.0/Dec.99
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