Infineon Technologies CY7C1372KV33-167AXC

Overview

CY7C1372KV33-167AXC from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous pipelined SRAM with NoBL™ architecture and integrated ECC, designed for high-throughput memory buffering in network packet processors and telecom line cards. It operates at 167 MHz with 3.4 ns access time, supports synchronous self-timed writes, and uses 3.3 V core (VDD) and 2.5 V I/O (VDDQ) supplies.

For engineers reviewing the CY7C1372KV33-167AXC datasheet, CY7C1372KV33-167AXC pinout, CY7C1372KV33-167AXC application, or CY7C1372KV33-167AXC equivalent, key selection criteria include burst order configuration (linear/interleaved), byte-write granularity (BWa/BWb), clock enable (CEN) behavior, and ECC correction capability for soft error mitigation in mission-critical systems.

Technical Context

This SRAM implements fully registered pipelined operation: all address, control, and data inputs are latched on the rising edge of CLK, and all outputs are driven through output registers synchronized to CLK. The internal burst logic supports linear or interleaved addressing based on the MODE strap pin.

It features synchronous self-timed write control with byte-selectable writes (BWa/BWb), tristate-controlled DQ/DQP I/Os, and asynchronous ZZ sleep mode. ECC encoding/decoding occurs on-chip to detect and correct single-bit errors, reducing SER without external logic.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), RoHS-compliant, JEDEC-standard Pb-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous pipelined SRAM applications.

Compared with IDT72V2115L16PF and IS61WV102418BLL-167TQLI, CY7C1372KV33-167AXC uniquely delivers integrated ECC, dual-voltage I/O, and configurable burst order-critical for telecom and defense applications demanding data integrity and timing predictability.

Availability

CY7C1372KV33-167AXC is available at Aetrix Electronics and suitable for telecom infrastructure, network security appliances, and industrial motion control systems requiring stable component supply across extended production lifecycles.

Supply support for CY7C1372KV33-167AXC 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 fabless semiconductor company specializing in high-performance memory, PSoC, and USB solutions for industrial, automotive, and communications markets.

CY7C1372KV33 belongs to Cypress's NoBL™ SRAM product line, engineered for deterministic, high-bandwidth memory interfacing in systems where bus latency directly impacts real-time throughput-especially in packet-switched and radar signal processing architectures.

FAQ

What is the function of the MODE pin on CY7C1372KV33-167AXC?

The MODE pin is a static configuration input that selects burst addressing order: pulled HIGH (or left floating) enables interleaved burst mode; pulled LOW selects linear burst mode. It must remain stable during operation and is sampled at power-up/reset. This setting determines how the internal address counter increments during burst accesses, matching specific ASIC or FPGA DMA controller expectations.

Does CY7C1372KV33-167AXC support partial writes without affecting adjacent bytes?

Yes. Using BWa and BWb (active-low byte write enables), the device allows independent writing to the upper 9-bit (DQa/DQPa) or lower 9-bit (DQb/DQPb) subword of each 18-bit word. When one BW is asserted and the other is deasserted, only the corresponding 9-bit segment is updated; the unselected segment retains its prior value, preserving data integrity without requiring read-modify-write cycles.

How does the ZZ pin interact with clock and chip enable signals?

The ZZ pin is asynchronous and active HIGH: asserting ZZ immediately places the device into low-power sleep mode, disabling outputs and reducing ICC to ≤5 µA, regardless of CLK, CEN, or CE states. Unlike CEN-which pauses clock recognition while retaining internal state-ZZ resets internal timing and requires reinitialization upon exit, making it suitable for extended idle periods rather than cycle-level gating.

Is the ECC functionality user-configurable or always enabled?

ECC is hardwired and always active; there is no disable control. Each 18-bit data word is automatically encoded with 2 parity bits (total 20 bits), and all reads perform on-the-fly SEC-DED correction. The corrected data appears at DQ outputs, and uncorrectable errors (double-bit) assert an internal flag-though no dedicated output pin reports this condition, requiring software polling of status registers if implemented in system firmware.