Infineon Technologies CY7C1372KVE33-167AXI

Overview

CY7C1372KVE33 from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous pipelined SRAM with NoBL™ architecture and on-chip 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 / 2.5 V I/O supplies in a 100-pin TQFP package.

For engineers reviewing the CY7C1372KVE33 datasheet, CY7C1372KVE33 pinout, CY7C1372KVE33 application, or CY7C1372KVE33 equivalent, key selection criteria include burst order configuration (linear/interleaved), byte-write select mapping (BWa–BWb), ZZ sleep mode timing, and ECC-enabled soft error resilience in mission-critical data paths.

Technical Context

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

It integrates synchronous self-timed write circuitry, eliminating external write pulse timing constraints, and features IEEE 1149.1 JTAG boundary scan for testability. The ECC encoder/decoder corrects single-bit errors and detects double-bit errors across the 18-bit data + 2-bit parity bus, reducing SER in radiation-prone environments.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), JEDEC-standard Pb-free, with exposed thermal pad.

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, CY7C1372KVE33 uniquely delivers integrated ECC, dual-voltage I/O, and hardware-configurable burst ordering - critical for telecom and aerospace applications requiring concurrent reliability, flexibility, and timing precision.

Availability

CY7C1372KVE33 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, FPGA-based protocol acceleration, and military/aerospace data logging requiring stable component supply across extended product lifecycles.

Supply support for CY7C1372KVE33 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, microcontrollers, and connectivity solutions for industrial, automotive, and communications markets.

CY7C1372KVE33 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-wait-state, high-throughput memory subsystems in networking infrastructure and real-time embedded systems.

FAQ

What is the function of the MODE pin, and how must it be configured?

The MODE pin is a static strap input that selects burst address sequence: HIGH enables interleaved burst order, LOW enables linear burst order. It must be held stable before device initialization and cannot change during operation. Floating defaults to HIGH (interleaved). This pin directly configures the internal burst counter logic and affects compatibility with memory controllers expecting specific address progression patterns.

How does the ZZ sleep mode interact with the CEN signal?

ZZ is asynchronous and high-active, forcing immediate entry into ultra-low-power sleep regardless of clock state; CEN is synchronous and low-active, merely masking CLK while preserving internal register state. When ZZ is asserted, the device enters sleep even if CEN is LOW - CEN has no effect during ZZ activation. Exiting ZZ requires deassertion followed by valid CLK/CEN sequence to resume operation.

Can BWa and BWb be used independently to write to different byte lanes in a single cycle?

Yes - BWa and BWb are independent, synchronous, active-low signals controlling write enables for DQa/DQPa and DQb/DQPb groups respectively. When WE is asserted, each BWx pin gates its associated 9-bit data lane, allowing partial 9-bit writes within the 18-bit word. This enables efficient updates of header fields or metadata without overwriting entire payload words.

Is the ECC functionality optional or always active?

ECC is hardwired and always active - there is no disable control. The 18-bit data bus plus 2-bit parity (DQPa/DQPb) are internally encoded/decoded on every read and write. Parity bits are stored alongside data and protected by the same ECC logic; no software or configuration is needed to enable correction - it operates transparently in hardware.