Accutek Microcircuit Corporation AK591024AS / AK591024AG 1,048,576 Word X 9 bit, CMOS Dynamic Random Access Memory DESCRIPTION Front View The Accutek AK591024 high density memory modules is a random access memory organized in 1 Meg x 9 bit words. The assembly consists of two 1 Meg x 4 and one 1 Meg x 1 DRAMs in surface mount packages mounted on the front side of a printed circuit board. The module can be configured as a leadless 30 pad SIM or a leaded 30 pin SIP. This packaging approach provides a better than 6 to 1 density increase over standard DIP packaging. 30-Pin SIM + + 30 1 30-Pin SIP The operation of the AK591024 is identical to two 1 Meg x 4 plus one 1 Meg x 1 DRAMs. For the lower eight bits, the data input is tied to data output and brought out separately for each 1 Meg x 4 device, with common RAS, CAS and WE control. The OE pins are tied to Vss which dictates the use of early-write cycles to prevent contention of D and Q. Since the Write-Enable (WE) signal must always go low before CAS in a write cycle, Read-Write and Read-Modify-Write operation is not possible. For the ninth bit, the data input (D9) and data output (Q9) pins are brought out separately and controlled by a separate PCAS for that bit. Bit nine is generally used for parity. + + 1 FEATURES · 1,048,576 x 9 bit organization · Optional 30 Pad SIM (Single In-Line Module) or 30 Pin leaded SIP (Single In-Line Package) · JEDEC standard pinout · Common CAS, RAS and WE control for the lower eight bits · 1024 refresh cycles/16ms · Operating free air temperature: 0o to 70oC · Upward compatible with and AK594096 and AK5916384 · Downward compaitble with AK59256 · Separate PCAS control for D9 and Q9 PIN NOMENCLATURE · Power: 1.650 Watt Max Active (60 nS) 1.485 Watt Max Active (70 nS) 1.265 Watt Max Active (80 nS) 23.5 mWatt Standby (max) · Functionally and Pin compatible with AK491024 PIN ASSIGNMENT FUNCTIONAL DIAGRAM PIN # SYMBOL PIN # SYMBOL 1 Vcc 16 DQ5 Data In 2 CAS 17 A8 Data Out 3 DQ1 18 A9 4 A0 19 NC DQ1 - DQ8 Data In / Data Out D9 Q9 A0 - A9 Address Inputs 5 A1 20 DQ6 CAS, PCAS Column Address Strobe 6 DQ2 21 WE RAS Row Address Strobe 7 A2 22 Vss 8 A3 23 DQ7 9 Vss 24 NC WE Write Enable Vcc 5v Supply 10 DQ3 25 DQ8 Vss Ground 11 A4 26 Q9 NC No Connect MODULE OPTIONS 12 A5 27 RAS 13 DQ4 28 PCAS 14 A6 29 D9 15 A7 30 Vcc A 0 - A9 + RAS + CAS + WE + DQ1 + DQ2 + DQ3 + DQ4 + DQ5 DQ6 DQ7 DQ8 + + + + PCAS + Leadless SIM: AK591024ASP Leaded SIP: AK591024AGP D9 + Q9 + 10 A0 - A9 * RAS * CAS * WE * DQ1 * DQ2 * DQ3 * DQ4 OE * A0 - A9 * RAS * CAS * WE * DQ1 * DQ2 * DQ3 * DQ4 OE * A0 - A9 * RAS * CAS * WE *D Q * MECHANICAL DIMENSIONS ORDERING INFORMATION PART NUMBER CODING INTERPRETATION Position 1 2 3 6 Inches 7 8 0.505 0.495 0.260 0.240 0.325 0.275 + 1 + 0.100 T.P. 3.510 3.490 3.110 3.090 Do Not Install Do Not Install + 30 + 0.100 TYP 0.200" MAX 0.053 0.047 The numbers and coding on this page do not include all variations available but are show as examples of the most widely used variations. Contact Accutek if other information is required. 1 Product AK = Accutek Memory Type 4 = Dynamic RAM 5 = CMOS Dynamic RAM 6 = Static RAM Organization/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 Package Type G = Single In-Line Package (SIP) S = Single In-Line Module (SIM) D = Dual In-Line Package (DIP) W = .050 inch Pitch Edge Connect Z = Zig-Zag In-Line Package (ZIP) Special Designation P = Page Mode N = Nibble Mode K = Static Column Mode W = Write Per Bit Mode V = Video Ram Separator - = Commercial 00C to +700C M = Military Equivalent Screened (-550C to +1250C) I = Industrial Temperature Tested (-450C to +850C) X = Burned In Speed (first two significant digits) DRAMS SRAMS 50 = 50 nS 8 = 8 nS 60 = 60 nS 10 = 10 nS 70 = 70 nS 12 = 12 nS 80 = 80 nS 15 = 15 nS 0.505 0.495 8 5 0.024 0.016 7 4 0.100 T.P. 6 3 0.100 TYP 5 2 0.085 0.075 4 1 EXAMPLES: AK591024AGP-60 1 Meg x 9, 60 nSEC, DRAM, SIP Configuration, 30 Pin AK591024ASP-70 1 Meg x 9, 70 nSEC, DRAM, SIM Configuration, 30 Pin ACCUTEK MICROCIRCUIT CORPORATION BUSINESS CENTER at NEWBURYPORT 2 NEW PASTURE ROAD, SUITE 1 NEWBURYPORT, MA 01950-4054 VOICE: 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.