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AK584096BG Datasheet(PDF) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
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AK584096BG Datasheet(HTML) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
1 / 2 page DESCRIPTION The Accutek AK584096 high density memory module is a CMOS dynamic RAM organized in 4 Meg x 8 bit words. The assembly con- sists of two 4 Meg x 4 DRAMS, mounted on the front side of a printed circuit board in 30 pad SIM (leadless) or 30 pin SIP (leaded) configu- ration with JEDEC-standard pinouts. Designed especially for low-height applications such as VMEbus boards, this low profile module is 0.550 inch high. The operation is identical to eight 4 Meg x 1 DRAMs. The data in- put/output is brought out separately for each bit, with common RAS , CAS and WE control. This common I/O feature dictates the use of early-write cycles to prevent contention of Data In and Data Out. 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. FEATURES · 4,194,304 x 8 bit organization · Low Profile 30 pad (SIM) Single In-Line Memory · Low Profile 30 pin (SIP) Single In-Line package · JEDEC standard pinout · Common CAS and RAS control for eight common DQ Lines · CAS-before-RAS refresh · Refresh cycle 2048 cycles in 32 mSEC · Power 0.095 Watt Max Active, 70 nSEC 1.060 Watt Max Active, 60 nSEC 11.0 mWatt Max Standy · Operating free air temperature 0 0Cto700C · Downward compatible with AK581024 and AK58256 · Upward compatible with AK5816384 · Fast Page Mode and Static Column Mode versions available, nibble mode is not possible ACCUTEK MICROCIRCUIT CORPORATION AK584096BS / AK584096BG 4,194,304 Word by 8 Bit CMOS Dynamic Random Access Memory PIN NOMENCLATURE A0 -A10 Address Inputs RAS0 Row Address Strobe CAS Column Address Strobe WE Write Enable OE Output Enable DQ1 -DQ8 Data In/Data Out Vcc 5v Supply Vss Ground NC No Connect MODULE OPTIONS Leadless SIM: AK584096BS Leaded SIP: AK584096BG PIN ASSIGNMENT Pi n# Symbol Pi n# Symbol 1 Vcc 16 DQ5 2 CAS 17 A8 3DQ1 18 A9 4A0 19 A10 5A1 20 DQ6 6 DQ2 21 WE 7 A2 22 Vss 8A3 23 DQ7 9 Vss 24 NC 10 DQ3 25 DQ8 11 A4 26 NC 12 A5 27 RAS0 13 DQ4 28 NC 14 A6 29 NC 15 A7 30 Vcc + 1 1 30 + + + Front View 30-Pin SIM 30-Pin SIP FUNCTIONAL DIAGRAM |
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