AK5322048BW
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
ACCUTEK
MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK5322048BW high density memory module is a
CMOS dynamic RAM organized in 2048K x 32 bit words. The mod-
ule consists of four standard 1 Meg x 16 bits DRAMs in plastic SOJ
packages. The assembly has two 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.
1
72
The operation of the AK5322048BW is identical to sixteen 1 Meg x 4
DRAMs. There are four CAS lines and two RAS lines. On each
bank of 1M x 32, independent byte control is accomplished by four
CAS lines. Each seperate CAS line controls one byte of the 1 Meg x
16 DRAM.
· Power:
3.96 Watt Max Active (50nS)
3.52 Watt Max Active (60 nS)
3.08 Watt Max Active (70 nS)
44 mW Max Standby
FEATURES
· 2,097,152 x 32 bit organization
· 72 pad Single In-Line Module
· Downward compatible with AK5321024W, AK532512W and
AK532256W
· CAS-before-RAS, RAS-only or hidden refresh
· Operating free air temperature 0oC to 70oC
· Single 5 Volt Power Supply
· Upward compatible with AK5324096W and AK5328192W
ADDITIONAL OPTIONS AVAILABLE
1 Meg x 32 version, AK5321024BW
1 Meg x 36 version, AK5361024BW
2 Meg x 36 version, AK5362048BW
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode or EDO
PIN NOMENCLATURE
PIN ASSIGNMENT
A0 - A9
Address Inputs
PIN #
1
SYMBOL
Vss
PIN #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
SYMBOL
NC
PIN #
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SYMBOL
NC
PIN #
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ11
DQ27
DQ12
DQ28
Vcc
DQ0 - DQ35
WE
Data In/Data Out
Write Enable
2
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
DQ4
DQ20
DQ5
DQ21
DQ6
DQ22
DQ7
DQ23
A7
NC
3
Vss
4
CAS0
CAS2
CAS3
CAS1
RAS0
RAS1
NC
RAS0 - RAS3
CAS0 - CAS3
PD1 - PD4
Vss
Row Address Strobe
Column Address Strobe
Presence Detect
Ground
5
6
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
NC
7
8
9
10
11
12
13
14
15
16
17
18
NC
NC
WE
Vcc
5v Supply
A0
Vcc
NC
A1
A8
DQ8
PD1
NC
No Connect
A2
A9
DQ24
DQ9
PD1
A3
RAS3
RAS2
NC
PD3
A4
DQ25
DQ10
DQ26
PD4
MODULE OPTIONS
A5
NC
A6
NC
Vss
Leadless SIM: AK5322048BW
Presence Detect
-50
-60
-70
PD1
PD2
PD3
PD4
NC
VC
NC
NC
NC
NC
NC
NC
Vss
NC
Vss
Vss