CY7C1480V25 Datasheet, PDF (1/32 Pages) Cypress Semiconductor – 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined Sync SRAM

CY7C1480V25
CY7C1482V25
CY7C1486V25
72-Mbit (2M x 36/4M x 18/1M x 72)
Pipelined Sync SRAM
Features
Functional Description^[1]
• Supports bus operation up to 250 MHz
• Available speed grades are 250, 200, and 167 MHz
• Registered inputs and outputs for pipelined operation
• 2.5V core power supply
• 2.5V/1.8V IO operation
• Fast clock-to-output time
— 3.0 ns (for 250-MHz device)
• Provide high-performance 3-1-1-1 access rate
• User selectable burst counter supporting Intel^®
Pentium^® interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self timed writes
• Asynchronous output enable
• Single cycle chip deselect
• CY7C1480V25, CY7C1482V25 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and
non-Pb-free 165-ball FBGA package. CY7C1486V25
available in Pb-free and non-Pb-free 209-ball FBGA
package
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• “ZZ” Sleep Mode option
The CY7C1480V25/CY7C1482V25/CY7C1486V25 SRAM
integrates 2M x 36/4M x 18/1M × 72 SRAM cells with
advanced synchronous peripheral circuitry and a two-bit
counter for internal burst operation. All synchronous inputs are
gated by registers controlled by a positive-edge-triggered
Clock Input (CLK). The synchronous inputs include all
addresses, all data inputs, address-pipelining Chip Enable
(CE₁), depth-expansion Chip Enables (CE₂ and CE₃), Burst
Control inputs (ADSC, ADSP, and ADV), Write Enables (BW_X,
and BWE), and Global Write (GW). Asynchronous inputs
include the Output Enable (OE) and the ZZ pin.
Addresses and chip enables are registered at rising edge of
clock when either Address Strobe Processor (ADSP) or
Address Strobe Controller (ADSC) is active. Subsequent burst
addresses can be internally generated as controlled by the
Advance pin (ADV).
Address, data inputs, and write controls are registered on-chip
to initiate a self-timed Write cycle. This part supports Byte
Write operations (see “Pin Definitions” on page 7 and “Truth
Table” on page 10 for further details). Write cycles can be one
to two or four bytes wide, as controlled by the byte write control
inputs. When it is active LOW, GW causes all bytes to be
written.
The CY7C1480V25/CY7C1482V25/CY7C1486V25 operates
from a +2.5V core power supply while all outputs may operate
with either a +2.5 or +1.8V supply. All inputs and outputs are
JEDEC-standard JESD8-5-compatible.
Selection Guide
Maximum Access Time
Maximum Operating Current
Maximum CMOS Standby Current
250 MHz
200 MHz
167 MHz
Unit
3.0
3.0
3.4
ns
450
450
400
mA
120
120
120
mA
Note
1. For best practices recommendations, refer to the Cypress application note System Design Guidelines at www.cypress.com.
Cypress Semiconductor Corporation
Document #: 38-05282 Rev. *H
• 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Revised April 23, 2007
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