Infineon Technologies CY7C1470V33-167AXCT

Overview

CY7C1470V33 from Infineon Technologies (formerly Cypress) is a 72-Mbit synchronous pipelined SRAM with NoBL™ architecture, configured as 2M × 36, supporting zero-wait-state 167 MHz bus operation, 3.3 V core supply, 3.3 V/2.5 V I/O supply, and JEDEC-standard Pb-free 100-pin TQFP packaging. It enables true back-to-back read/write cycles in high-throughput networking buffers and packet-switching ASIC interfaces.

For engineers reviewing the CY7C1470V33 datasheet, CY7C1470V33 pinout, CY7C1470V33 application, or CY7C1470V33 equivalent, key selection criteria include burst mode support (linear/interleaved), synchronous self-timed writes, byte-write capability (BWa–BWd), clock enable (CEN) control, and ZZ sleep mode implementation per errata guidance.

Technical Context

The device implements fully registered inputs and outputs synchronized to the rising edge of CLK, with internal self-timed output buffer control eliminating asynchronous OE timing constraints. Three chip enables (CE1–CE3) and dedicated byte write selects (BWa–BWd) enable fine-grained bank and data masking control.

NoBL™ logic ensures consecutive read/write operations transfer data every clock cycle without bus latency. Burst addressing supports both linear and interleaved orders, and JTAG boundary scan (IEEE 1149.1) is integrated for production testability - all operating within commercial temperature range (0 °C to +70 °C).

Key Specifications

Pinout & Package

Package: 100-pin TQFP (JEDEC MS-026AC, 14 mm × 20 mm × 1.4 mm body height, Pb-free finish).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72T3616L16PF and IS61WV102436B, CY7C1470V33 delivers double the memory capacity, integrated sleep and test features, and flexible I/O voltage support - essential for next-generation telecom and embedded real-time systems requiring scalability and long-term maintainability.

Availability

CY7C1470V33 is available at Aetrix Electronics and suitable for telecom line cards, high-speed packet switching ASICs, industrial real-time controllers, and radar signal processing FIFOs requiring stable component supply and long-lifecycle support.

Supply support for CY7C1470V33 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, memory, and security solutions.

CY7C1470V33 belongs to Infineon's legacy Cypress synchronous SRAM product line, designed specifically for high-bandwidth, low-latency buffering in networking infrastructure and real-time embedded systems.

FAQ

What is the required connection for the ZZ pin on CY7C1470V33?

The ZZ pin (Pin 64 in TQFP package) must be externally connected to ground, as specified in the Errata on page 35 of the datasheet. Leaving ZZ floating or driving it high causes undefined sleep behavior and potential data retention issues. This is a mandatory hardware design requirement, not an optional configuration.

Does CY7C1470V33 support 2.5 V I/O operation with 3.3 V core supply?

Yes - CY7C1470V33 supports independent 3.3 V core (VDD) and 2.5 V I/O (VDDQ) supplies. VDDQ pins must be biased at 2.5 V ± 0.1 V, and all DQ, BW, CE, OE, and ADV/LD signals referenced to VDDQ. This allows seamless interfacing with 2.5 V logic families while maintaining 3.3 V internal timing margins.

How does the NoBL™ architecture improve system throughput compared to standard ZBT SRAMs?

NoBL™ eliminates bus turnaround delays by enabling immediate read-after-write or write-after-read transitions without wait states. Unlike ZBT devices requiring OE deassertion/reassertion or address hold times, CY7C1470V33 uses internal pipelining and registered outputs to deliver data every clock cycle - increasing effective bandwidth by up to 30% in burst-intensive workloads like packet buffering.

Can CY7C1470V33 be used in linear burst mode with interleaved burst addressing?

Yes - the device supports both linear and interleaved burst orders, selected via the MODE pin (high = linear, low = interleaved). Burst length is fixed at four words, and the burst counter advances automatically on each CLK edge after ADV/LD asserts. This flexibility allows optimization for cache line alignment (linear) or memory controller prefetch patterns (interleaved).