CY7C1480BV33 Datasheet, PDF (1/34 Pages) Cypress Semiconductor – 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined Sync SRAM

CY7C1480BV33
CY7C1482BV33, CY7C1486BV33
72-Mbit (2M x 36/4M x 18/1M x 72)
Pipelined Sync SRAM
Features
■ Supports bus operation up to 250 MHz
■ Available speed grades are 250, 200, and 167 MHz
■ Registered inputs and outputs for pipelined operation
■ 3.3V core power supply
■ 2.5V/3.3V IO operation
■ Fast clock-to-output times
❐ 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
■ CY7C1480BV33, CY7C1482BV33 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and
non Pb-free 165-ball FBGA package. CY7C1486BV33
available in Pb-free and non-Pb-free 209-ball FBGA package
■ IEEE 1149.1 JTAG-Compatible Boundary Scan
■ “ZZ” Sleep Mode option
Functional Description
The CY7C1480BV33, CY7C1482BV33, and CY7C1486BV33
SRAM integrates 2M x 36/4M x 18/1M × 72 SRAM cells with
advanced synchronous peripheral circuitry and a 2-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 the rising edge of
the clock when either Address Strobe Processor (ADSP) or
Address Strobe Controller (ADSC) are active. Subsequent burst
addresses may 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 sections 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. GW when active LOW causes all bytes to be written.
The CY7C1480BV33, CY7C1482BV33, and CY7C1486BV33
operates from a +3.3V core power supply while all outputs may
operate with either a +2.5 or +3.3V supply. All inputs and outputs
are JEDEC standard JESD8-5 compatible. For best practices
recommendations, refer to the Cypress application note AN1064
“SRAM System Guidelines”.
Selection Guide
Description
Maximum Access Time
Maximum Operating Current
Maximum CMOS Standby Current
250 MHz
200 MHz
167 MHz
Unit
3.0
3.0
3.4
ns
500
500
450
mA
120
120
120
mA
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-15145 Rev. *A
• San Jose, CA 95134-1709 • 408-943-2600
Revised March 05, 2008
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