Infineon Technologies CY7C1512KV18-250BZI

Overview

CY7C1512KV18 from Cypress Semiconductor is a 4M × 18-bit (72-Mbit), 1.8V QDR® II SRAM with independent read/write ports, 250 MHz operation (4 ns cycle time), DDR interfaces on both ports (500 Mbps per pin), and 1.5-cycle read latency when DOFF = HIGH. It delivers high-bandwidth buffering for network packet processors in telecom line cards.

For engineers reviewing the CY7C1512KV18 datasheet, CY7C1512KV18 pinout, CY7C1512KV18 application, or CY7C1512KV18 equivalent, key selection criteria include burst-2 QDR timing compliance, FBGA-165 package compatibility, 1.8V core / 1.4–1.8V I/O voltage support, and synchronous self-timed write capability.

Technical Context

This SRAM implements true dual-port QDR II architecture: separate K/K clocks drive address/data latching on rising edges only, while C/C clocks control output registers to minimize skew. The device uses echo clocks (CQ/CQ) and a PLL for precise data placement at 500 Mbps per pin.

It supports depth expansion via RPS/WPS port selects and byte-level write masking (BWS[1:0]) for partial-word updates. All operations are fully synchronous with no bus turnaround, enabling concurrent read/write transactions without arbitration overhead.

Key Specifications

Pinout & Package

Package: 165-ball Fine-Pitch Ball Grid Array (FBGA), 13 mm × 15 mm × 1.4 mm body, 0.8 mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3615L10BG and IS61WV102418BLL-10BLI, CY7C1512KV18 uniquely combines 72-Mbit density, 250 MHz QDR II timing, echo clocks, and selectable 1/1.5-cycle latency - making it the only option meeting telecom packet processor bandwidth and jitter requirements.

Availability

CY7C1512KV18 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, baseband processing cache, and ATE pattern memory requiring stable component supply across extended product lifecycles.

Supply support for CY7C1512KV18 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) designs high-performance memory and programmable solutions for communications, industrial, and automotive markets.

CY7C1512KV18 belongs to the QDR® II SRAM product line, engineered specifically for deterministic, high-bandwidth data buffering in networking and telecom infrastructure where concurrent read/write and sub-5 ns timing precision are mandatory.

FAQ

What is the function of the DOFF pin on CY7C1512KV18?

The DOFF (Data Output OFF) pin selects read latency mode: when asserted HIGH, the device operates with 1.5-cycle read latency to accommodate tighter timing margins in high-speed systems; when LOW, it delivers 1-cycle latency for minimal delay. This setting directly affects the C-clock-to-Q-output delay and must be configured before initialization.

How does the CY7C1512KV18 handle partial-word writes?

Partial-word writes are controlled by BWS[1:0] (Byte Write Select) inputs: BWS0 enables writing to D[8:0], BWS1 enables D[17:9]. Both signals are sampled synchronously with K clock edges. When a BWS bit is deasserted, the corresponding 9-bit segment remains unaltered - preserving existing data without requiring read-modify-write cycles.

Can CY7C1512KV18 operate with only one clock domain (K = C)?

Yes - the device supports single-clock-domain operation where K and C are tied together. In this mode, the internal PLL is bypassed, and output registers are clocked directly by the shared K/C input. However, echo clocks (CQ/CQ) remain functional and aligned to Q[17:0] edges, preserving source-synchronous capture capability.

What is the purpose of the NC/144M and NC/288M pins?

NC/144M and NC/288M are no-connect balls not bonded to the die. They may be left floating or tied to any voltage level (VSS, VDD, or VDDQ) without affecting operation. These pins exist for package compatibility across the CY7C15xxKV18 family and have no electrical function in CY7C1512KV18.