Cypress Semiconductor Corp CY7C1472BV33-167AXI

Overview

CY7C1472BV33-167AXI from Cypress Semiconductor is a 3.3 V, 4M × 18 (72-Mbit) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory subsystems in networking and telecom line cards. It supports 167 MHz bus operation with zero wait states, features fully registered inputs/outputs, byte-write capability via BWa–BWb, and internal self-timed output buffer control eliminating asynchronous OE timing constraints.

For engineers reviewing the CY7C1472BV33-167AXI datasheet, CY7C1472BV33-167AXI pinout, CY7C1472BV33-167AXI application, or CY7C1472BV33-167AXI equivalent, key selection criteria include burst mode support (linear/interleaved), synchronous self-timed write timing, 3.3 V/2.5 V I/O compatibility, and IEEE 1149.1 JTAG boundary scan compliance for system-level testability.

Technical Context

The device implements a pipelined read/write architecture where all address, control, and data signals are registered on the rising edge of CLK, enabling true back-to-back operations without bus latency. Its NoBL™ logic eliminates pipeline stalls by synchronizing output enable internally and decoupling OE from data validity timing.

Burst access is controlled via ADV/LD to advance or load the on-chip address counter, supporting both linear and interleaved burst orders. Write operations use synchronous self-timed circuitry qualified by WE and BWa–BWb, with tri-state control applied synchronously during write data windows to prevent bus contention.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), JEDEC-standard Pb-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and IS61WV102418BLL-167TQLI, CY7C1472BV33-167AXI uniquely combines burst-order configurability (linear/interleaved), IEEE 1149.1 JTAG, and deep-sleep (ZZ) mode - making it optimal for programmable, testable, and power-aware telecom infrastructure.

Availability

CY7C1472BV33-167AXI is available at Aetrix Electronics and suitable for network packet buffering, telecom line card caching, and baseband signal preprocessing requiring stable component supply across extended product lifecycles.

Supply support for CY7C1472BV33-167AXI 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 and communications markets.

CY7C1472BV33 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, zero-latency memory access in high-speed packet processing and real-time signal conditioning systems.

FAQ

What is the function of the ADV/LD pin in burst operations?

The ADV/LD pin controls the internal address counter during burst access: when HIGH (with CEN active), it increments the counter to fetch the next sequential or interleaved address; when LOW, it loads a new base address from A[17:0]. This enables seamless transition between burst transfers and random-access modes without external address sequencing logic.

Does CY7C1472BV33-167AXI support 2.5 V I/O operation with 3.3 V core?

Yes - VDDQ is independently powered and accepts 2.5 V ±0.2 V, while VDD operates at 3.3 V ±0.3 V. This dual-supply configuration allows direct interfacing with 2.5 V FPGA I/O banks without level shifters, provided VDDQ and VDD sequencing meets tVR/tVF requirements per the datasheet.

How does the ZZ (Sleep) mode reduce power consumption?

Asserting ZZ LOW places the SRAM into deep sleep, reducing standby current to ≤50 µA (typical) - over 99% lower than standard CMOS standby (120 mA). All internal clocks and registers halt, but data retention is maintained as long as VDD and VDDQ remain within specification.

Can CY7C1472BV33-167AXI be used in place of CY7C1470BV33-167AXI?

No - although pin-compatible in 100-pin TQFP, CY7C1472BV33 is organized as 4M × 18 (72 Mbit), whereas CY7C1470BV33 is 2M × 36 (72 Mbit). Their address and data pin mappings differ: CY7C1472 uses BWa/BWb for two 9-bit byte groups, while CY7C1470 uses BWa–BWd for four 9-bit groups - requiring PCB layout and firmware changes.