Infineon Technologies CY7C1444AV33-167AXCT

Overview

CY7C1444AV33-167AXCT from Cypress Semiconductor is a 36-Mbit pipelined synchronous SRAM configured as 1 M × 36, operating at 167 MHz with 3.3 V core and 2.5/3.3 V I/O supplies, registered inputs/outputs for burst-mode timing control, and IEEE 1149.1 JTAG boundary scan - used in high-speed network packet buffering and FPGA co-processor memory interfaces.

For engineers reviewing the CY7C1444AV33-167AXCT datasheet, CY7C1444AV33-167AXCT pinout, CY7C1444AV33-167AXCT application, or CY7C1444AV33-167AXCT equivalent, key selection criteria include pipelined DCD timing architecture, 100-pin TQFP package compatibility, 2.5 V/3.3 V I/O flexibility, ZZ sleep mode support, and Intel Pentium™-compatible burst sequencing.

Technical Context

This SRAM implements a dual-clock-domain synchronous interface: all address, data, and control inputs (ADSP, ADSC, ADV, CE1–CE3, BWx, GW, BWE) are registered on CLK's rising edge, while OE and ZZ remain asynchronous. The internal two-bit burst counter and pipelined enable register enable depth expansion without wait states.

It supports both interleaved and linear burst sequences via the MODE strap pin, delivers 3.4 ns clock-to-output time at 167 MHz, and uses separate processor (ADSP) and controller (ADSC) address strobes to decouple CPU and DMA access paths - critical for real-time embedded systems requiring deterministic latency.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), JEDEC-standard Pb-free, 14 × 14 mm body, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102436BLL-167BLI and MT48LC32M16A2P-16E:G, CY7C1444AV33-167AXCT uniquely combines JTAG testability, multi-strobe chip enable architecture, and hardware-managed sleep - essential for high-reliability, field-upgradable embedded systems where timing predictability and debug access are non-negotiable.

Availability

CY7C1444AV33-167AXCT is available at Aetrix Electronics and suitable for network packet buffering, FPGA co-processor memory, and real-time industrial controller applications requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.

Supply support for CY7C1444AV33-167AXCT 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 industrial, automotive, and communications markets.

CY7C1444AV33 belongs to Cypress's Pipelined Synchronous SRAM product line, engineered specifically for deterministic, low-jitter memory interfacing in FPGA- and ASIC-based systems demanding burst-mode throughput without software-managed wait states.

FAQ

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

The MODE pin selects burst address sequence: tied to GND for linear burst, or to VDD/floating for Intel Pentium™-interleaved burst. It is a static strap pin with internal pull-up; must remain unchanged during operation. Incorrect strapping causes invalid burst address generation and data corruption during burst reads/writes.

Can CY7C1444AV33-167AXCT operate with only 2.5 V I/O supply and 3.3 V core?

Yes - VDDQ (I/O supply) accepts 2.5 V ± 0.2 V while VDD (core) requires 3.3 V ± 0.3 V. This dual-supply configuration enables direct interfacing with 2.5 V FPGAs or ASICs without level translators, and is validated across commercial temperature range (0°C to +70°C).

How does the pipelined enable register improve depth expansion?

The pipelined enable register delays output buffer disable by one clock cycle after chip deselect, allowing consecutive accesses across multiple SRAM devices without inserting wait states. This maintains full 167 MHz throughput in banked memory configurations with CE1/CE2/CE3 decoding.

Is JTAG boundary scan functional in ZZ sleep mode?

No - JTAG operation is disabled in ZZ sleep mode. Boundary scan requires active core power and clock; the ZZ pin places the entire synchronous logic block, including TAP controller, into retention state. JTAG functionality resumes only after ZZ returns LOW and CLK stabilizes.