Infineon Technologies CY7C1380KV33-167AXIT

Overview

CY7C1380KV33-167AXIT from Cypress Semiconductor is a 18-Mbit pipelined synchronous SRAM with 512K × 36 organization, operating at 167 MHz (t_CO = 3.4 ns), supporting 3.3 V core and 2.5/3.3 V I/O supplies, and featuring registered address/data paths, synchronous self-timed write, and JTAG boundary scan - deployed in high-speed CPU cache subsystems requiring deterministic burst access.

For engineers reviewing the CY7C1380KV33-167AXIT datasheet, CY7C1380KV33-167AXIT pinout, CY7C1380KV33-167AXIT application, or CY7C1380KV33-167AXIT equivalent, key selection criteria include pipelined clock-to-output timing, dual-burst mode (linear/interleaved), byte-write granularity (BWA–BWD + BWE), three-chip-enable architecture for memory banking, and TQFP-100 package compatibility with JEDEC-compliant signal integrity.

Technical Context

This SRAM implements a two-bit synchronous burst counter controlled by ADV, ADSP, and ADSC inputs to generate sequential addresses during linear or interleaved bursts. All address, data, and control inputs (except OE and ZZ) are registered on the rising edge of CLK, enabling precise timing alignment in high-frequency bus interfaces.

The device supports four-byte-wide synchronous writes qualified by BWE and individual byte-select lines (BWA–BWD), plus global write (GW) that overrides byte enables. Output enable (OE) operates asynchronously to tri-state DQ/DQP pins, while ZZ provides asynchronous sleep mode with data retention and internal pull-down.

Key Specifications

Pinout & Package

Package: 100-pin JEDEC-standard Pb-free TQFP (14 × 20 × 1.4 mm), RoHS-compliant, with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102432BLL-167BLI and MT55LSD256H36P-167:G, the CY7C1380KV33-167AXIT uniquely balances legacy-compatible control (ADSP/ADSC/ADV), flexible I/O voltage, and JTAG testability - making it optimal for incremental upgrades of existing synchronous bus systems without controller rearchitecture.

Availability

CY7C1380KV33-167AXIT is available at Aetrix Electronics and suitable for high-speed CPU cache subsystems, network packet buffering, industrial motion control memory, and avionics data acquisition requiring stable component supply and long-term obsolescence management.

Supply support for CY7C1380KV33-167AXIT 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 U.S.-based semiconductor company specializing in high-performance memory, PSoC programmable systems-on-chip, and USB/USB-C solutions.

The CY7C1380KV33 belongs to Cypress's high-speed synchronous SRAM product line, designed specifically for low-latency, burst-oriented applications in computing, networking, and real-time control systems where deterministic timing and JEDEC-compliant interoperability are critical.

FAQ

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

The MODE pin selects burst address sequence: tied to GND for linear burst, or to VDD/floating for interleaved burst. It is a static strap pin - its state is sampled only at power-up and must remain unchanged during operation. Internal pull-up ensures safe default to interleaved mode if left unconnected, matching common x86 processor cache behavior.

Can CE2 be used independently to enable the device without CE1 or CE3?

No. CE2 is active HIGH but functions only in conjunction with CE1 (active LOW) and CE3 (active LOW) - all three must be simultaneously asserted per the truth table. CE1 is the primary enable; if CE1 is HIGH, ADSP is ignored regardless of CE2/CE3 state. This hierarchical enable scheme supports multi-bank memory decoding in large systems.

Does the ZZ sleep mode affect data retention time or require special power sequencing?

ZZ mode preserves data indefinitely as long as VDD and VDDQ remain within specification (≥2.7 V for VDD, ≥2.3 V for VDDQ). No special power sequencing is required - ZZ may be asserted anytime during operation. The internal pull-down eliminates need for external resistor, and exit latency is one clock cycle after ZZ returns LOW.

How does the device handle simultaneous ADSP and ADSC assertion?

When both ADSP and ADSC are asserted LOW, the device recognizes only ADSP - ADSC is ignored. This priority design ensures compatibility with systems where both processor and controller strobes may coincide, guaranteeing consistent address capture behavior aligned with CPU-initiated accesses rather than peripheral-initiated ones.