Cypress Semiconductor Corp CY7C1412KV18-333BZC

Overview

CY7C1412KV18-333BZC from Cypress Semiconductor is a 2M × 18 (36-Mbit) QDR® II SRAM with independent read/write ports, 333 MHz clock operation, DDR interfaces on both ports (666 MHz data rate), and 1.8 V core / 1.4–1.8 V I/O supply. It delivers concurrent burst transfers of two 18-bit words per access for high-throughput packet buffering in network line cards.

For engineers reviewing the CY7C1412KV18-333BZC datasheet, CY7C1412KV18-333BZC pinout, CY7C1412KV18-333BZC application, or CY7C1412KV18-333BZC equivalent, key selection criteria include dual-clock DDR timing, echo clock (CQ/CQ) support for source-synchronous capture, DOFF-configurable 1-cycle vs. 1.5-cycle read latency, and 165-ball FBGA (13 × 15 × 1.4 mm) package compatibility with high-density routing.

Technical Context

The device implements a synchronous pipelined architecture with physically separate read and write data paths, eliminating bus turnaround delays. It uses four dedicated clocks-K/K for address/data input synchronization and C/C for output timing-with echo clocks CQ/CQ aligned to C/C for precise data capture at the controller.

Internal self-timed writes ensure deterministic write completion without external handshaking. Read latency is configurable via DOFF: LOW enables 1-cycle latency (QDR I mode), HIGH enables 1.5-cycle latency (QDR II mode), both supporting full data coherency across concurrent accesses.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body height, 0.8 mm ball pitch, Pb-free termination.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-bandwidth dual-port SRAM applications.

Compared with IDT72T36120L10BG and IS61WV102418BLL-10BLI, CY7C1412KV18-333BZC uniquely balances 666 MT/s bandwidth, configurable latency, echo clock support, and mature QDR II ecosystem integration - making it optimal for upgrade paths from legacy QDR I designs and mid-bandwidth telecom infrastructure.

Availability

CY7C1412KV18-333BZC is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, high-speed test equipment memory, and real-time signal processing buffer applications requiring stable component supply and long-term industrial availability.

Supply support for CY7C1412KV18-333BZC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C1412KV18 belongs to Cypress's QDR II SRAM product line, designed specifically for high-throughput, low-latency memory interfacing in networking and telecom infrastructure where deterministic timing and concurrent access are critical.

FAQ

What is the function of the DOFF pin on CY7C1412KV18-333BZC?

The DOFF (Data Output OFF) pin configures read latency mode: when asserted HIGH, it enables 1.5-cycle latency (QDR II mode); when LOW, it enables 1-cycle latency (QDR I compatibility mode). This setting is sampled synchronously on the rising edge of K and remains active until changed. It directly affects timing closure in the memory controller's read path and must be held stable during operation.

Can CY7C1412KV18-333BZC operate with only a single clock domain?

Yes - the device supports single-clock mode where K and C are tied together (and K and C are tied together), simplifying clock distribution. In this mode, data is latched and driven using only the K/K pair, and echo clocks CQ/CQ track K/K instead of C/C. All timing parameters shift accordingly, and maximum frequency may be reduced slightly due to relaxed skew constraints.

How does the BWS[1:0] signal control byte writes in CY7C1412KV18-333BZC?

BWS0 controls D[8:0] and BWS1 controls D[17:9], each active LOW. During a write, asserting either BWS signal enables writing to its corresponding 9-bit lane while leaving the other lane unchanged. Both signals can be asserted simultaneously for full 18-bit writes. This eliminates need for read-modify-write cycles when updating partial words, reducing effective write latency by up to 40% in mixed-width data paths.

Is JTAG boundary scan supported on CY7C1412KV18-333BZC, and how is it enabled?

Yes - the device implements IEEE 1149.1 JTAG TAP with TDI, TDO, TCK, and TMS pins routed to dedicated balls (R13, R15, R14, R16). JTAG is always enabled at power-up; no configuration fuse or strap is required. Boundary scan testing covers all I/Os and internal registers, and the instruction set includes SAMPLE/PRELOAD, EXTEST, and IDCODE - verified in the official datasheet revision *O.