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CY7C0852V-133BBC Datasheet(PDF) 1 Page - Cypress Semiconductor |
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CY7C0852V-133BBC Datasheet(HTML) 1 Page - Cypress Semiconductor |
1 / 39 page CY7C0851V/CY7C0851AV CY7C0852V/CY7C0852AV CY7C0853V/CY7C0853AV FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM Cypress Semiconductor Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 38-06070 Rev. *L Revised August 7, 2012 FLEx36™ 3.3 V 32 K / 64 K / 128 K / 256 K × 36 Synchronous Dual-Port RAM Features ■ True dual-ported memory cells that allow simultaneous access of the same memory location ■ Synchronous pipelined operation ■ Organization of 2-Mbit, 4-Mbit, and 9-Mbit devices ■ Pipelined output mode allows fast operation ■ 0.18-micron Complimentary metal oxide semiconductor (CMOS) for optimum speed and power ■ High-speed clock to data access ■ 3.3 V low power ❐ Active as low as 225 mA (typ) ❐ Standby as low as 55 mA (typ) ■ Mailbox function for message passing ■ Global master reset ■ Separate byte enables on both ports ■ Commercial and industrial temperature ranges ■ IEEE 1149.1-compatible Joint test action group (JTAG) boundary scan ■ 172-Ball fine-pitch ball grid array (FBGA) (1 mm pitch) (15 mm × 15 mm) ■ 176-Pin thin quad plastic flatpack (TQFP) (24 mm × 24 mm × 1.4 mm) ■ Counter wrap around control ❐ Internal mask register controls counter wrap-around ❐ Counter-interrupt flags to indicate wrap-around ❐ Memory block retransmit operation ■ Counter readback on address lines ■ Mask register readback on address lines ■ Dual chip enables on both ports for easy depth expansion Functional Description The FLEx36™ family includes 2M, 4M, and 9M pipelined, synchronous, true dual-port static RAMs that are high-speed, low-power 3.3 V CMOS. Two ports are provided, permitting independent, simultaneous access to any location in memory. The result of writing to the same location by more than one port at the same time is undefined. Registers on control, address, and data lines allow for minimal setup and hold time. During a Read operation, data is registered for decreased cycle time. Each port contains a burst counter on the input address register. After externally loading the counter with the initial address, the counter increments the address internally (more details to follow). The internal Write pulse width is independent of the duration of the R/W input signal. The internal Write pulse is self-timed to allow the shortest possible cycle times. A HIGH on CE0 or LOW on CE1 for one clock cycle powers down the internal circuitry to reduce the static power consumption. One cycle with chip enables asserted is required to reactivate the outputs. Additional features include: readback of burst-counter internal address value on address lines, counter-mask registers to control the counter wrap-around, counter interrupt (CNTINT) flags, readback of mask register value on address lines, retransmit functionality, interrupt flags for message passing, JTAG for boundary scan, and asynchronous Master Reset (MRST). The CY7C0853V/CY7C0853AV device in this family has limited features. Please see Address Counter and Mask Register Operations on page 9 for details. Product Selection Guide Density 2-Mbit (64 K × 36) 4-Mbit (128 K × 36) 9-Mbit (256 K × 36) Part number CY7C0851V/CY7C0851AV CY7C0852V/CY7C0852AV CY7C0853V/CY7C0853AV Max. speed (MHz) 167 167 133 Max. access time - clock to data (ns) 4.0 4.0 4.7 Typical operating current (mA) 225 225 270 Package 176-pin TQFP, 172-ball FBGA 176-pin TQFP, 172-ball FBGA 172-ball FBGA |
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