Infineon Technologies CY7C1372KV33-167AXIT

Overview

CY7C1372KV33-167AXIT from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous pipelined SRAM with NoBL™ architecture and on-chip ECC, designed for high-throughput memory subsystems in networking and telecom infrastructure. It operates at 167 MHz with 3.4 ns maximum access time, supports synchronous self-timed writes and burst reads (linear/interleaved), and uses 3.3 V core (VDD) and 2.5 V I/O (VDDQ) supplies.

For engineers reviewing the CY7C1372KV33-167AXIT datasheet, CY7C1372KV33-167AXIT pinout, CY7C1372KV33-167AXIT application, or CY7C1372KV33-167AXIT equivalent, key selection criteria include zero-wait-state back-to-back read/write capability, byte-write control via BWa/BWb, JTAG boundary-scan support, ZZ sleep mode, and ECC-enabled soft-error resilience in mission-critical systems.

Technical Context

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

It integrates synchronous self-timed write circuitry, eliminating external write timing constraints, and features internally controlled output buffer timing that removes dependency on asynchronous OE for tri-state management during writes. ECC encoding/decoding occurs on-chip, correcting single-bit errors and detecting double-bit errors in real time.

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 IDT72V2115L15PF and IS61WV102418BLL-167TQLI, CY7C1372KV33-167AXIT uniquely combines ECC, dual-voltage I/O, JTAG, and ZZ sleep in a single 100-pin TQFP package - making it the only option meeting full telecom and avionics functional safety and testability requirements at 167 MHz.

Availability

CY7C1372KV33-167AXIT is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply across extended product lifecycles.

Supply support for CY7C1372KV33-167AXIT 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.

CY7C1372KV33-167AXIT belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, zero-wait-state memory subsystems in high-speed packet processing and real-time control applications.

FAQ

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

The MODE pin is a static configuration strap that selects burst address order: pulled HIGH (or left floating) enables interleaved burst mode, while pulled LOW selects linear burst mode. It must remain stable during device operation, as dynamic changes cause undefined burst behavior and potential data corruption. The pin is sampled at power-up and does not require latching logic.

How does the ZZ pin interact with clock enable (CEN) during low-power operation?

ZZ is an asynchronous active-HIGH sleep input that places the device in a low-current state while retaining memory contents; CEN is a synchronous active-LOW clock gate that pauses internal timing without entering sleep. When both are asserted, ZZ dominates - the device enters sleep regardless of CEN state. Exiting ZZ sleep requires deassertion followed by at least one valid CLK cycle before normal operation resumes.

Can CY7C1372KV33-167AXIT operate with VDDQ = 3.3 V instead of 2.5 V?

No - the CY7C1372KV33-167AXIT is specified only for VDDQ = 2.5 V ±0.2 V per datasheet Absolute Maximum Ratings and DC Characteristics. Operating VDDQ at 3.3 V exceeds the absolute maximum I/O voltage rating and risks permanent damage to output drivers and input receivers. The device requires a dedicated 2.5 V I/O rail.

Is JTAG boundary scan supported on CY7C1372KV33-167AXIT, and how is it enabled?

Yes - CY7C1372KV33-167AXIT implements IEEE 1149.1 JTAG boundary scan using TCK, TMS, TDI, and TDO pins. JTAG is always enabled at power-on; no configuration register or fuse setting is required. The TAP controller responds to standard JTAG instructions (SAMPLE/PRELOAD, EXTEST, INTEST, BYPASS) and supports full scan chain visibility of all I/O pins and internal registers.