MICROCIRCUIT CORPORATION
DESCRIPTION
The Accutek AK5361024W high density memory module is a CMOS Dynamic RAM organized in 1024K x 36 bit words. The module consists of eight standard 1 Meg x 4 DRAMsin plastic SOJ packages 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 additional 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.
ACCUTEK
AK5361024W 1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory
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72
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 versions · 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 00Ct o7 00C
PIN NOMENCLATURE
DQ0 - DQ35 A0 - A 9 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
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 Symbol NC DQ4 DQ22 DQ5 DQ23 DQ6 DQ24 DQ7 DQ25 A7 NC Vcc A8 A9 NC RAS2 DQ26 DQ8 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
MODULE OPTIONS
Leadless SIM: AK5361024W Leaded ZIP: AK5361024Z
Presence Detect
PD1 PD2 PD3 PD4 -60 Vss Vss NC NC -70 Vss Vss Vss NC -80 Vss Vss NC Vss
http://www.Datasheet4U.com
FUNCTIONAL DIAGRAM
CAS0 RAS0
CAS1
CAS2 RAS2
CAS3
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS D CAS WE Q
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS D CAS WE Q
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS D CAS WE Q
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE
A0 - A9 RAS D CAS WE Q
WE
DQ0 DQ1 DQ2 DQ3
DQ4 DQ5 DQ6 DQ7
DQ8
DQ9 DQ10 DQ11 DQ12
DQ13 DQ14 DQ15 DQ16
DQ17
DQ18 DQ19 DQ20 DQ21
DQ22 DQ23 DQ24 DQ25
DQ26
DQ27 DQ28 DQ29 DQ30
DQ31 DQ32 DQ33 DQ34
DQ35
MECHANICAL DIMENSIONS
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4.250" 3.850"
0.330" MAX
0.875" MAX 0.425" 0.375" 0.250"
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0.080"
0.125" C LC L C L LC
0.050" TYP
MICROCIRCUIT CORPORATION
ACCUTEK
5 NEW PASTURE ROAD NEWBURYPORT, MA 01950-4040 PHONE: 978-465-6200 FAX: 978-462-3396 Email:
[email protected] 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. Preliminary data sheets contain minimum and maximum limits based upon design objectives, which are subject to change upon full characterization over the specific operating conditions.
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