AK5361024W Datasheet, PDF (1/2 Pages) ACCUTEK MICROCIRCUIT CORPORATION – 1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory

Accutek
Microcircuit
Corporation
AK5361024W
1,048,576 Word by 36 Bit CMOS
Dynamic Random Access Memory
DESCRIPTION
The Accutek AK5361024W high density memory module is a
CMOS Dynamic RAM organized in 1024K x 36 bit words. The mod-
ule consists of eight standard 1 Meg x 4 DRAMsin plastic SOJ pack-
ages mounted on the front side of a printed circuit board and four 1
Meg x 1 DRAMs in plastic SOJ packages mounted on the back side
of a printed circuit board with a low profile height of only 0.875 inch
+
+
in a 72 pin 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 AK5361024W is identical to eight 1 Meg x 4
plus four 1 Meg x 1 DRAMs. There are four CAS lines and two RAS
lines. Independent byte control is accomplished by four CAS lines.
Each separate CAS line controls two 1Meg x 4 DRAMs, along with a
1 Meg x 1 DRAM with data in tied to data out to form a 9 bit byte. The
bank of 36 bits is controlled by the two RAS lines. An eighteen bit
data path can be produced by connecting DQ₀ to DQ₁₈, DQ₁ to
DQ₁₉, etc. and alternately strobing RAS₀ with RAS₂.
FEATURES
· 1,048,576 x 36 bit organization
· Low profile board height of 0.875 inch
· 72 pad Single In-Line Module
· Multiple CAS and RAS lines allow x18 or x36 bit widths
· CAS-before-RAS, RAS-only or hidden refresh
· Power
7.26 Watt Max Active (60nS)
6.16 Watt Max Active (70 nS)
5.28 Watt Max Active (80 nS)
66 mW Max Standby
· Single 5 Volt Power Supply
· 1024 Refresh Cycles, 16 mSEC
· Available in Fast Page Mode and Static Column Mode ver-
sions
· Available in leadless SIM or leaded ZIP versions
· Downward compatible with AK536512W and AK536256W
· Upward compatible with AK5362048W, AK5364096W and
AK5368192W
· Operating free air temperature 0⁰C to 70⁰C
PIN NOMENCLATURE
DQ₀ - DQ₃₅
A₀ - A₉
CAS₀ - CAS₃
RAS₀ & RAS₂
WE
PD₁ - PD₄
Vcc
Vss
NC
Data In/Data Out
Address Inputs
Column Address Strobe
Row Address Strobe
Write Enable
Presence Detect
5v Supply
Ground
No Connect
MODULE OPTIONS
Leadless SIM: AK5361024W
PIN ASSIGNMENT
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
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Presence Detect
-60
-70
PD1
Vss
Vss
PD2
Vss
Vss
PD3
NC
Vss
PD4
NC
NC
Symbol
NC
DQ4
DQ22
DQ5
DQ23
DQ6
DQ24
DQ7
DQ25
A7
NC
Vcc
A8
A9
NC
RAS2
DQ26
DQ8
-80
Vss
Vss
NC
Vss
Pin #
37
38
39
40
41
42
43
44
45
46
47
48
46
50
51
52
53
54
Symbol
DQ17
DQ35
Vss
CAS0
CAS2
CAS3
CAS1
RAS0
NC
NC
WE
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
PD2
PD3
PD4
NC
Vss