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.
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.
FEATURES
·2,097,152 x 32 bit organization
·72 pad Single In-Line Module
·CAS-before-RAS,RAS-only or hidden refresh
·Operating free air temperature 0oCto70
oC
·Single 5 Volt Power Supply
·1024 Refresh Cycles, 16 mSEC
·Available in Fast Page Mode or EDO
·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
·Downward compatible with AK5321024W, AK532512W and
AK532256W
·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
Accutek
Microcircuit
Corporation
AK5322048BW
2,097,152 Word by 32 Bit CMOS
Dynamic Random Access Memory
PIN NOMENCLATURE
A0-A
9Address Inputs
DQ0-DQ
35 Data In/Data Out
W Write Enable
RAS0, RAS1Row Address Strobe
CAS0- CAS3Column Address Strobe
PD1-PD
4Presence Detect
Vss Ground
Vcc 5v Supply
NC No Connect
MODULE OPTIONS
Leadless SIM: AK5322048BW
PIN ASSIGNMENT
PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL
1 Vss 19 NC 37 NC 55 DQ11
2 DQ0 20 DQ4 38 NC 56 DQ27
3 DQ16 21 DQ20 39 Vss 57 DQ12
4 DQ1 22 DQ5 40 CAS0 58 DQ28
5 DQ17 23 DQ21 41 CAS2 59 Vcc
6 DQ2 24 DQ6 42 CAS3 60 DQ29
7 DQ18 25 DQ22 43 CAS1 61 DQ13
8 DQ3 26 DQ7 44 RAS0 62 DQ30
9 DQ19 27 DQ23 45 RAS1 63 DQ14
10 Vcc 28 A7 46 NC 64 DQ31
11 NC 29 NC 47 WE 65 DQ15
12 A0 30 Vcc 48 NC 66 NC
13 A1 31 A8 49 DQ8 67 PD1
14 A2 32 A9 50 DQ24 68 PD1
15 A3 33 RAS3 51 DQ9 69 PD3
16 A4 34 RAS2 52 DQ25 70 PD4
17 A5 35 NC 53 DQ10 71 NC
18 A6 36 NC 54 DQ26 72 Vss
Presence Detect
-50 -60 -70
PD1 NC NC NC
PD2 VC NC NC
PD3 Vss NC Vss
PD4 Vss NC NC
+
+
+
FUNCTIONAL DIAGRAM
MECHANICAL DIMENSIONS
72
1
.750"
0.400" 0.250"
0.080"
C
LC
L
C
L
C
L
0.125" 0.050"
TYP
4.250"
3.985"
.125" DIA TOOLING HOLE
0.330"
MAX
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ1 0
DQ1 1
DQ1 2
DQ1 3
DQ1 4
DQ1 5
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ1 0
DQ1 1
DQ1 2
DQ1 3
DQ1 4
DQ1 5
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ1 0
DQ1 1
DQ1 2
DQ1 3
DQ1 4
DQ1 5
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ1 0
DQ1 1
DQ1 2
DQ1 3
DQ1 4
DQ1 5
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ1 0
DQ1 1
DQ1 2
DQ1 3
DQ1 4
DQ1 5
DQ1 6
DQ1 7
DQ1 8
DQ1 9
DQ2 0
DQ2 1
DQ2 2
DQ2 3
DQ2 4
DQ2 5
DQ2 6
DQ2 7
DQ2 8
DQ2 9
DQ3 0
DQ3 1
ACCUTEK MICROCIRCUIT CORPORATION
BUSINESS CENTER at NEWBURYPORT
2 NEW PASTURE ROAD, SUITE 1
NEWBURYPORT, MA 01950-4054
PHONE: 978-465-6200 FAX: 978-462-3396
E-Mail: sales@accutekmicro.com
Internet: www.accutekmicro.com
Accutek reserves the right to make changes in specifications at any time
and without notice. Accutek does not assume any responsibility for the
use of any circuitry described; no circuit patent licenses are implied. Pre-
liminary data sheets contain minimum and maximum limits based upon
design objectives, which are subject to change upon full characterization
over the specific operating conditions.
