AK5362048BW_09 Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – Dynamic Random Access Memory

ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK5362048BW high density memory module is a
CMOS dynamic RAM organized in 2048K x 36 bit words. The mod-
ule consists of four standard 1 Meg x 16 bits DRAMs and two 1 Meg
x 4 bit Quad CAS DRAM in plastic SOJ packages. The assembly
has 3 DRAMs mounted on each side of a printed circuit board in a 72
pad leadless SIM configuration.
This configuration allows socket-mounting of large quantities of
memory in applications where high density and ease of inserting ad-
ditional memory are important.
The operation of the AK5362048BW is identical to sixteen 1 Meg x 4
plus eight 1 Meg x 1 DRAMs. There are four CAS lines and two RAS
lines. On each bank of 1 Meg x 36, independent byte control is ac-
complished by four CAS lines. Each seperate CAS line controls one
byte of the 1 Meg x 16 plus a parity bit in the QUAD CAS DRAM.
FEATURES
· 2,097,152 x 36 bit organization
· 72 pad Single In-Line Module
· CAS-before-RAS, RAS-only or hidden refresh
· Operating free air temperature 0^oC to 70^oC
· Single 5 Volt Power Supply
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode and EDO
AK5362048BW
2,097,152 Word by 36 Bit CMOS
Dynamic Random Access Memory
1
72
· Power
2.125 Watt Max Active (50nS)
1.975 Watt Max Active (60 nS)
1.825 Watt Max Active (70 nS)
30 mW Max Standby
· Downward compatible with AK5361024W, AK536512W and
AK536256W
· Upward compatible with AK5364096W and AK5368192W
ADDITIONAL OPTIONS AVAILABLE
1 Meg x 32 version, AK5321024BW
1 Meg x 36 version, AK5361024BW
2 Meg x 32 version, AK5322048BW
PIN NOMENCLATURE
PIN ASSIGNMENT
A0 - A9
DQ0 - DQ35
W
RAS0 - RAS3
CAS0 - CAS3
PD1 - PD4
Vss
Vcc
NC
Address Inputs
Data In/Data Out
Write Enable
Row Address Strobe
Column Address Strobe
Presence Detect
Ground
5v Supply
No Connect
MODULE OPTIONS
Leadless SIM: AK5362048BW
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SYMBOL
Vss
DQ0
DQ18
DQ1
DQ19
DQ2
DQ20
DQ3
DQ21
Vcc
NC
A0
A1
A2
A3
A4
A5
A6
Presence Detect
-50
PD1
NC
PD2
NC
PD3
Vss
PD4
Vss
PIN #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
SYMBOL
NC
DQ4
DQ22
DQ5
DQ23
DQ6
DQ24
DQ7
DQ25
A7
NC
Vcc
A8
A9
RAS3
RAS2
DQ26
DQ8
-60
-70
NC
NC
NC
NC
NC
Vss
NC
NC
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
DQ17
DQ35
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
W
NC
DQ9
DQ27
DQ10
DQ28
DQ11
DQ29
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ12
DQ30
DQ13
DQ31
Vcc
DQ32
DQ14
DQ33
DQ15
DQ34
DQ16
NC
PD1
PD1
PD3
PD4
NC
Vss