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DESCRIPTION
Accutek Microcircuit Corporation
AK632512W / AK632512Z 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory
Front View 72-Pin SIM
The Accutek AK632512 SRAM Module consists of fast high performance SRAMs mounted on a low height, 72 pin SIM or ZIP Board. The module utilizes four 36 pin 512K x 8 SRAMs in 400 mil SOJ packages and four decoupling capacitors mounted on the front side of a printed circuit board. The SRAMs used have common I/O functions and single output enable functions. Also, four separate chip select (CE) connections are used to independently enable the four bytes. The modules can be supplied in a variety of access time values from 15 nSEC to 35 nSEC in CMOS or BiCMOS technology. The Accutek module is designed to have a maximum seated height of 0.640 inch SIM or 0.555 inch ZIP to provide for the lowest height off the board. Each conforms to JEDEC-standard sizes and pin-out configurations. Using four pins for module memory density identification, PD0, PD1, PD2 and PD3 minimizes interchangeability and design considerations when changing from one module size to the other in customer applications.
1
36
37
72
72-Pin ZIP
1
36
37
72
FEATURES
* 524,288 x 32 bit organization * JEDEC Standard 72 pin SIM or ZIP format * Common I/O, single OE and WE functions with four separate chip selects (CE) * Fast access times from 15 nSEC * Low height, 0.640 inch SIM or 0.555 inch ZIP maximum * Power: 720mA Max Active (20 nSEC) 760mA Max Active (15 nSEC) 800mA Max Active (12 nSEC) 200mA Max Standby * TTL-compatible inputs and outputs
* Presence Detect, PD0, PD1, PD2 and PD3 for identifying module density * Downward compatible with 256K x 32 (AK632256), 128K x 32 (AK632128), 64K x 32 (AK63264) and 32K x 32 (AK63232), 64 pin SIM or ZIP designs * Upward compatible with 1 Meg x 32 (AK6321024) * Single 5 volt power supply - AK632512W, AK632512Z * Single 3.3 volt power supply - AK632512W/3.3, AK632512Z/3.3 * Operating free air temperature 00 to 700C
ELECTRICAL SPECIFICATIONS
Timing diagrams and basic electrical characteristics are those of the standard 512K x 8 SRAMs used to construct these modules. Accutek's module design allows the flexibility of selecting industry-compatible 512K x 8 SRAMs from several SRAM manufacturers.
PIN NOMENCLATURE
A0 - A18 CE1 - CE4 DQ1 - DQ32 OE PD0 - PD3 Vcc Vss WE Address Inputs Chip Enable Data In/Data Out Output Enable Presence Detect 5v Supply Ground Write Enable
PIN ASSIGNMENT
PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL
FUNCTIONAL DIAGRAM
A0 - A18 + WE + OE +
1 2 3 4 5 6 7 8 9 10 11 12
NC NC PD2 PD3 Vss PD0 PD1 DQ1 DQ9 DQ2 DQ10 DQ3 DQ11 DQ4 DQ12 Vcc A0 A7
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
A1 A8 A2 A9 DQ13 DQ5 DQ14 DQ6 DQ15 DQ7 DQ16 DQ8 Vss WE A15 A14 CE2 CE1
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
CE4 CE3 A17 A16 OE Vss DQ25 DQ17 DQ26 DQ18 DQ27 DQ19 DQ27 DQ20 A3 A10 A4 A11
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
A5 A12 Vcc A13
19
A0 - A18 * WE DQ1 - DQ8 * OE CE + DQ1 - DQ8
CE1 +
A6 DQ21 DQ29 DQ22 DQ30 DQ23 DQ31 DQ24 DQ32
* OE CE2 + A0 - A18 * WE DQ1 - DQ8 + DQ17 - DQ24 A0 - A18 * WE DQ1 - DQ8 * OE CE + DQ9 - DQ16
MODULE OPTIONS
Leadless SIM: AK632512W Leaded SIP: AK632512G Leaded ZIP: AK632512Z
13 14 15 16 17 18
Vss A18 NC
A0 - A168 CE CE3 +
NC
* WE
NC
* OE
*
*
*
DQ1 - DQ8
+ DQ25 - DQ32
CE4 +
*
PD0 PD1
= =
Open Open
PD2 PD3
= =
Vss Open
CE
ORDERING INFORMATION PART NUMBER CODING IN TER PRE TA TION
Position 1 2 Product AK = Accutek Mem ory Type 4 = Dy namic RAM 5 = CMOS Dy namic RAM 6 = Static RAM Or ga ni za tion/Word Width 1 = by 1 16 = by 16 4 = by 4 32 = by 32 8 = by 8 36 = by 36 9 = by 9 Size/Bits Depth 64 = 64K 4096 = 4 MEG 256 = 256K 8192 = 8 MEG 1024 = 1 MEG 16384 = 16 MEG Pack age Type G = Sin gle In-Line Pack age (SIP) S = Sin gle In-Line Mod ule (SIM) D = Dual In-Line Pack age (DIP) W = .050 inch Pitch Edge Con nect Z = Zig-Zag In-Line Pack age (ZIP) Spe cial Des ig na tion P = Page Mode N = Nib ble Mode K = Static Col umn Mode W = Write Per Bit Mode V = Video Ram Separator - = Com mer cial 0 0C to +700 C M = Mil i tary Equiv a lent Screened (-550C to +1250C) I = In dus trial Tem per a ture Tested (-450C to +85 0C) X = Burned In Speed (first two sig nif i cant dig its) DRAMS SRAMS 50 = 50 nS 8= 8 nS 60 = 60 nS 10 = 10 nS 70 = 70 nS 12 = 25 nS 80 = 80 nS 15 = 15 nS
1 2 3 4 5 6 7 8
MECHANICALDIMENSIONS
Inches
3
4
5
6
7
8
The num bers and cod ing on this page do not in clude all vari a tions avail able but are shown as ex am ples of the most widely used vari a tions. Con tact Accutek if other in for ma tion is re quired.
EXAMPLES:
AK632512W-15 512K x 32, 15 nSEC SRAM Mod ule, SIM Con fig u ra tion AK632512Z-20 512K x 32, 20 nSEC SRAM Mod ule, ZIP Con fig u ra tion
ACCUTEK MICRO CIR CUIT COR PO RA TION BUSI NESS CENTER at NEWBURYPORT 2 NEW PAS TURE ROAD, SUITE 1 NEWBURYPORT, MA 01950-4054 VOICE: 978-465-6200 FAX: 978-462-3396 Email: sales@accutekmicro.com Internet: www.accutekmicro.com
Accutek re serves the right to make changes in spec i fi ca tions at any time and with out no tice. Accutek does not as sume any re spon si bil ity for the use of any cir cuitry de scribed; no cir cuit pat ent li censes are implied. Pre lim i nary data sheets con tain min i mum and max i mum limits based upon design objectives, which are sub ject to change upon full char ac ter iza tion over the spe cific op er at ing con di tions.

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