Cypress Semiconductor Perform CY7C1511KV18 Manual

Features
Separate Independent Read and Write Data Ports
■
Supports concurrent transactions
❐
333 MHz Clock for High Bandwidth
■
4-word Burst for Reducing Address Bus Frequency
■
Double Data Rate (DDR) Interfaces on both Read and Write
■
Ports (data transferred at 666 MHz) at 333 MHz
Two Input Clocks (K and K) for precise DDR Timing
■
SRAM uses rising edges only
❐
Two Input Clocks for Output Data (C and C) to minimize Clock
■
Skew and Flight Time mismatches
Echo Clocks (CQ and CQ) simplify Data Capture in High Speed
■
Systems
Single Multiplexed Address Input Bus latches Address Inputs
■
for Read and Write Ports
Separate Port Selects for Depth Expansion
■
Synchronous Internally Self-timed Writes
■
QDR™-II operates with 1.5 Cycle Read Latency when DOFF
■
is asserted HIGH
Operates similar to QDR-I Device with 1 Cycle Read Latency
■
when DOFF is asserted LOW
Available in x8, x9, x18, and x36 Configurations
■
Full Data Coherency, providing Most Current Data
■
Core V = 1.8V (±0.1V); IO V
■
DD
Supports both 1.5V and 1.8V IO supply
❐
Available in 165-ball FBGA Package (13 x 15 x 1.4 mm)
■
Offered in both Pb-free and non Pb-free Packages
■
Variable Drive HSTL Output Buffers
■
JTAG 1149.1 Compatible Test Access Port
■
Phase Locked Loop (PLL) for Accurate Data Placement
■
Table 1. Selection Guide
Description
Maximum Operating Frequency
Maximum Operating Current
Cypress Semiconductor Corporation
Document Number: 001-00435 Rev. *E
= 1.4V to V
DDQ DD
333 MHz 300 MHz
333
x8 600
x9 600
x18 620
x36 850
• 198 Champion Court
CY7C1511KV18, CY7C1526KV18
CY7C1513KV18, CY7C1515KV18
72-Mbit QDR™-II SRAM 4-Word
Configurations
CY7C1511KV18 – 8M x 8
CY7C1526KV18 – 8M x 9
CY7C1513KV18 – 4M x 18
CY7C1515KV18 – 2M x 36

Functional Description

The CY7C1511KV18, CY7C1526KV18, CY7C1513KV18, and
CY7C1515KV18 are 1.8V Synchronous Pipelined SRAMs,
equipped with QDR-II architecture. QDR-II architecture consists
of two separate ports: the read port and the write port to access
the memory array. The read port has dedicated data outputs to
support read operations and the write port has dedicated data
inputs to support write operations. QDR-II architecture has
separate data inputs and data outputs to completely eliminate
the need to "turnaround" the data bus that exists with common
IO devices. Each port can be accessed through a common
address bus. Addresses for read and write addresses are
latched on alternate rising edges of the input (K) clock. Accesses
to the QDR-II read and write ports are independent of one
another. To maximize data throughput, both read and write ports
are equipped with DDR interfaces. Each address location is
associated with four 8-bit words (CY7C1511KV18), 9-bit words
(CY7C1526KV18), 18-bit words (CY7C1513KV18), or 36-bit
words (CY7C1515KV18) that burst sequentially into or out of the
device. Because data can be transferred into and out of the
device on every rising edge of both input clocks (K and K and C
and C), memory bandwidth is maximized while simplifying
system design by eliminating bus "turnarounds".
Depth expansion is accomplished with port selects, which
enables each port to operate independently.
All synchronous inputs pass through input registers controlled by
the K or K input clocks. All data outputs pass through output
registers controlled by the C or C (or K or K in a single clock
domain) input clocks. Writes are conducted with on-chip
synchronous self-timed write circuitry.
250 MHz 200 MHz
300 250
560 490
560 490
570 500
790 680
,
• San Jose CA 95134-1709
Burst Architecture
167 MHz
200 167
430 380
430 380
440 390
580 510
• 408-943-2600
Revised March 30, 2009
Unit
MHz
mA
[+] Feedback