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IDT70825S Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT70825S Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 21 page Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES OCTOBER 1996 ©1996 Integrated Device Technology, Inc. DSC-3016/6 HIGH-SPEED 8K x 16 SEQUENTIAL ACCESS RANDOM ACCESS MEMORY (SARAM™) FEATURES: • 8K x 16 Sequential Access Random Access Memory (SARAM™) - Sequential Access from one port and standard Random Access from the other port - Separate upper-byte and lower-byte control of the Random Access Port • High-speed operation - 20ns tAA for random access port - 20ns tCD for sequential port - 25ns clock cycle time • Architecture based on Dual-Port RAM cells • Electrostatic discharge > 2001V, Class II • Compatible with Intel BMIC and 82430 PCI Set • Width and Depth Expandable • Sequential side - Address based flags for buffer control - Pointer logic supports two internal buffers • Battery backup operation—2V data retention • TTL-compatible, single 5V ( ±10%) power supply • Available in 80-pin TQFP and 84-pin PGA • Military product compliant to MIL-STD-883. • Industrial temperature range (–40 °C to +85°C) is available, tested to military electrical specifications. FUNCTIONAL BLOCK DIAGRAM DESCRIPTION: The IDT70825 is a high-speed 8K x 16-bit Sequential Access Random Access Memory (SARAM). The SARAM offers a single-chip solution to buffer data sequentially on one port, and be accessed randomly (asynchronously) through the other port. The device has a Dual-Port RAM based architecture with a standard SRAM interface for the random (asynchronous) access port, and a clocked interface with counter sequencing for the sequential (synchronous) access port. Fabricated using CMOS high-performance technology, this memory device typically operates on less than 900mW of power at maximum high-speed clock-to-data and Random Access. An automatic power down feature, controlled by CE, permits the on-chip circuitry of each port to enter a very low standby power mode. The IDT70825 is packaged in a 80-pin Thin Plastic Quad Flatpack (TQFP) or 84-pin Ceramic Pin Grid Array (PGA). Military grade product is manufactured in compliance with the latest revision of MIL-STD-883, Class B, making it ideally suited to military temperature applications demanding the highest level of performance and reliability. IDT70825S /L The IDT logo is a registered trademark and SARAM is a trademark of Integrated Device Technology, Inc. 6.31 1 Random Access Port Controls Sequential Access Port Controls 8K X 16 Memory Array DataL DataR AddrL AddrR I/O0-15 SI/O0-15 Pointer/ Counter 13 Start Address for Buffer #1 End Address for Buffer #1 Start Address for Buffer #2 End Address for Buffer #2 Flow Control Buffer Flag Status 1 2 13 13 13 16 13 13 RST COMPARATOR A0-12 13 R/ LSB MSB 16 SCLK 2 SR/ 1 16 13 3016 drw 01 Reg. For latest information contact IDT’s web site at www.idt.com or fax-on-demand at 408-492-8391. |
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