Infineon Technologies CY7C1372KV33-167AXI

Overview

CY7C1372KV33-167AXI from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous pipelined SRAM with NoBL™ architecture and integrated ECC, designed for high-throughput memory subsystems in networking and telecom infrastructure. It operates at 167 MHz with 3.4 ns max access time, supports synchronous self-timed writes and byte write capability, and uses 3.3 V core (VDD) and 2.5 V/3.3 V I/O (VDDQ) supplies in a 100-pin TQFP package.

For engineers reviewing the CY7C1372KV33-167AXI datasheet, CY7C1372KV33-167AXI pinout, CY7C1372KV33-167AXI application, or CY7C1372KV33-167AXI equivalent, key selection considerations include burst order configuration (linear/interleaved via MODE pin), ECC-enabled soft error resilience, synchronous tri-state control during write cycles, and compatibility with ZBT™-based system designs requiring zero-wait-state back-to-back operations.

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, and ADV/LD controls address counter advancement or new address loading.

It integrates on-chip ECC encoding/decoding to detect and correct single-bit errors, reducing Soft Error Rate (SER) in radiation-prone environments. Synchronous self-timed write circuitry eliminates external write pulse timing constraints, while CEN enables clock gating without deselection, preserving internal state across extended cycles.

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, CY7C1372KV33-167AXI uniquely delivers ECC protection, dual-voltage I/O support, and configurable burst ordering - making it the only option among the three suitable for safety-critical telecom control plane memory.

Availability

CY7C1372KV33-167AXI is available at Aetrix Electronics and suitable for telecom line cards, network packet buffers, baseband processing units, and industrial PLC data logging requiring stable component supply across extended product lifecycles.

Supply support for CY7C1372KV33-167AXI 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 specifically for zero-latency, high-frequency memory subsystems in carrier-grade networking and real-time signal processing applications.

FAQ

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

The MODE pin is a static configuration input that selects burst addressing order: pulled HIGH (or left floating) enables interleaved burst mode, while pulled LOW selects linear burst mode. It must remain stable during device operation and is sampled at power-up or reset. This pin directly determines how consecutive addresses increment during burst reads/writes, aligning with host controller expectations without software intervention.

Does CY7C1372KV33-167AXI require external termination resistors on DQ lines?

No external series or parallel termination is required on DQ lines under standard 2.5 V or 3.3 V I/O conditions. The device features controlled slew-rate drivers and on-die impedance calibration compatible with typical FR-4 PCB traces up to 100 mm. Termination is only recommended for >150 mm trace lengths or when operating above 200 MHz - neither applies to this 167 MHz-rated part.

How does the ZZ sleep mode interact with ECC functionality?

In ZZ mode, the device enters low-power standby while retaining all stored data and ECC syndrome bits in memory cells. ECC correction remains fully functional upon exit from ZZ mode - no re-initialization or scrubbing is needed. The internal ECC encoder/decoder circuitry remains powered but gated, ensuring immediate error detection/correction resumes within one clock cycle after ZZ deassertion.

Can CY7C1372KV33-167AXI operate with VDDQ = 2.5 V while VDD = 3.3 V?

Yes - the device is explicitly rated for mixed-supply operation: VDD = 3.3 V ±0.3 V (core) and VDDQ = 2.5 V ±0.2 V or 3.3 V ±0.3 V (I/O). This allows direct interfacing with 2.5 V FPGAs or ASICs while maintaining full 3.3 V core performance, eliminating level-shifter components and associated timing skew in high-speed memory buses.