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AK5916384S Datasheet(PDF) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
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AK5916384S Datasheet(HTML) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
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1 / 2 page  DESCRIPTION The Accutek AK5916384S high density memory module is a CMOS random access memory organized in 16 Meg x 9 bit words. The as- sembly consists of nine 16 Meg x 1 DRAMs in plastic SOJ packages mounted on the front side of a printed circuit board in 30 pad SIM (leadless) or 30 pin SIP (leaded) configuration. The module is only 0.8 inch high (same height as standard 1 Meg modules), making it ideally suited for applications with low height restrictions. The operation of the AK5916384 is identical to nine 16 Meg x 1 dynamic RAMs. For the lower eight bits data input is tied to data output and brought out separately for each device, with common RAS, CAS and WE control. This common I/O feature 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 the data output (Q9) pins are brought out separately and controlled by a separate PCAS for that bit. Bit nine is generally used for parity. FEATURES · 16,777,216 x 9 bit organization · Optional 30 Pad leadless SIM (Single In-Line Module) or 30 Pin leaded SIP (Single In-Line Package) · JEDEC standard pinout · Common CAS and RAS control for the lower eight bits · Separate PCAS control for D9 and Q9 · CAS-before-RAS refresh · Downward compatible with AK594096, AK591024, and AK59256 · TTL-Compatible Inputs and Outputs · RAS-Only Refresh · 4096 Cycle Refresh every 64mSEC · Power: 4.45 Watt Max Active (60 nS) 3.96 Watt Max Active (70 nS) 49.5 mWatt Max Standby · Operating free air temperature 0oCto70oC · Fast Page Mode · 8 Bit version (without parity bit) also available Accutek Microcircuit Corporation AK5916384S / AK5916384G 16,777,216 Word by 9 Bit CMOS Dynamic Random Access Memory 1 30 1 Front View 30-Pin SIM 30-Pin SIP PIN NOMENCLATURE DQ1 -DQ8 Data In/Data Out D9 Data In Q9 Data Out A0 -A11 Address Inputs CAS, PCAS Column Address Strobe RAS Row Address Strobe WE Write Enable Vcc 5v Supply Vss Ground NC No Connect MODULE OPTIONS Leadless SIM: AK5916384S Leaded SIP: AK5916384G PIN ASSIGNMENT PIN # SYMBOL PIN # SYMBOL 1 Vcc 16 DQ5 2 CAS 17 A8 3 DQ1 18 A9 4 A0 19 A10 5 A1 20 DQ6 6 DQ2 21 WE 7 A2 22 Vss 8 A3 23 DQ7 9 Vss 24 A11 10 DQ3 25 DQ8 11 A4 26 Q9 12 A5 27 RAS 13 DQ4 28 PCAS 14 A6 29 D9 15 A7 30 Vcc FUNCTIONAL DIAGRAM |
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