Infineon Technologies CY7C1380KV33-167AXCT

Overview

CY7C1380KV33-167AXCT 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 inputs/outputs, synchronous self-timed write, and JTAG boundary scan - deployed in high-speed cache subsystems for RISC processors and network packet buffers.

For engineers reviewing the CY7C1380KV33-167AXCT datasheet, CY7C1380KV33-167AXCT pinout, CY7C1380KV33-167AXCT application, or CY7C1380KV33-167AXCT equivalent, key selection criteria include burst mode configuration (linear vs. interleaved), byte-write granularity (BWA–BWD + BWE), three-chip-enable depth expansion, ZZ sleep mode timing, and TQFP-100 package compatibility with JEDEC-standard I/O voltage levels.

Technical Context

This SRAM implements a two-bit synchronous wraparound burst counter controlled by ADV, ADSP, and ADSC strobes to generate internal burst addresses without external address bus cycling. All synchronous inputs - including A[1:0], CE1/CE2/CE3, BWX, GW, BWE, and MODE - are registered on the rising edge of CLK.

It supports dual-burst initiation paths: processor-driven (ADSP) and controller-driven (ADSC), with priority given to ADSP when both are active. Output data is registered and synchronized to CLK, delivering deterministic 3.4 ns clock-to-output delay at 167 MHz, while OE provides asynchronous output enable control independent of clock phase.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), Pb-free, JEDEC-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 AS7C331025B-167JCIN and IS61WV102436B-167TQLI, CY7C1380KV33-167AXCT uniquely combines dual-voltage I/O, configurable burst order, dedicated sleep mode, and IEEE 1149.1 testability - making it optimal for high-assurance, low-latency, mixed-voltage embedded systems.

Availability

CY7C1380KV33-167AXCT is available at Aetrix Electronics and suitable for network packet buffering, CPU L2 cache implementation, industrial motion control, and avionics data acquisition requiring stable component supply and long-term manufacturability.

Supply support for CY7C1380KV33-167AXCT 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) designs high-performance memory and programmable solutions for embedded systems, emphasizing timing precision, reliability, and system-level integration.

CY7C1380KV33 belongs to Cypress's high-speed pipelined SRAM product line, engineered specifically for deterministic-latency cache and buffer applications in networking, computing, and real-time control systems.

FAQ

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

The MODE pin selects burst addressing order: 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 or reset and must remain unchanged during operation. Internal pull-up ensures safe default to interleaved mode if left unconnected.

Can CY7C1380KV33-167AXCT operate with 2.5 V I/O while using 3.3 V core?

Yes. The device requires 3.3 V on VDD (core) and supports either 2.5 V or 3.3 V on VDDQ (I/O). VDDQ and VSSQ must be supplied independently from VDD/VSS. This dual-supply architecture enables direct interfacing with 2.5 V FPGAs or ASICs while maintaining full 3.3 V core performance.

How does the ZZ sleep mode affect timing and power consumption?

In ZZ mode (pin HIGH), the device enters a non-time-critical sleep state with data retention. Core current drops to ≤100 µA (typical), and all outputs go high-impedance. Exit time from ZZ is 100 ns max; CLK must be stable before first access. OE and other controls remain inactive until exit completes.

Is JTAG boundary scan available in the TQFP package?

No. JTAG signals (TCK, TMS, TDI, TDO) are only present in the 165-ball FBGA package. The 100-pin TQFP variant (CY7C1380KV33-167AXCT) omits these pins entirely - boundary scan is unavailable in this package. Functional testing must rely on conventional I/O stimulus methods.