Infineon Technologies CY7C1461KV33-133AXC

Overview

CY7C1461KV33-133AXC from Cypress Semiconductor is a 36-Mbit synchronous flow-through SRAM (1M × 36 or 2M × 18) with NoBL™ architecture, designed for high-throughput memory subsystems requiring zero-wait-state back-to-back read/write transitions. It operates at 133 MHz with 6.5 ns clock-to-output delay, supports byte write via four BWx pins, and uses 3.3 V core/I/O with JEDEC-standard 100-pin TQFP packaging - deployed in network packet buffers and real-time DSP data caches.

For engineers reviewing the CY7C1461KV33-133AXC datasheet, CY7C1461KV33-133AXC pinout, CY7C1461KV33-133AXC application, or CY7C1461KV33-133AXC equivalent, key selection criteria include burst order control (linear/interleaved), synchronous self-timed write timing, ZZ sleep mode power management, and three-chip-enable depth expansion capability.

Technical Context

The device implements a synchronous flow-through architecture where all inputs (address, WE, BWx, CE, ADV/LD) are registered on the rising edge of CLK, qualified by CEN. Internal burst logic uses A0/A1 and MODE to generate linear or interleaved 4-word sequences without external address generation.

Write operations are fully self-timed: WE and BWx qualify data latching on the second clock edge, while output drivers are synchronously tri-stated during write data capture - eliminating bus contention without OE coordination. ZZ mode enables asynchronous low-power sleep with data retention, and CE1/CE2/CE3 support hierarchical bank decoding.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L133BG and IS61WV102436BLL-133TQLI, CY7C1461KV33-133AXC uniquely combines NoBL™ zero-latency operation, hardware-configurable burst order, and asynchronous ZZ sleep - making it optimal for systems demanding both performance determinism and dynamic power scaling.

Availability

CY7C1461KV33-133AXC is available at Aetrix Electronics and suitable for network packet buffering, DSP data caching, telecom line card memory, and industrial motion controller buffer applications requiring stable component supply and long-term obsolescence planning.

Supply support for CY7C1461KV33-133AXC 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 infrastructure.

This device belongs to Cypress's NoBL™ SRAM product line, engineered specifically to replace ZBT™ SRAMs in bandwidth-constrained systems where back-to-back read/write efficiency directly impacts real-time throughput.

FAQ

What is the function of the MODE pin on CY7C1461KV33-133AXC?

The MODE pin selects burst address sequence: tied to GND for linear burst (0,1,2,3), or to VDD/floating for interleaved burst (0,2,4,6). It is sampled at power-up and remains static during operation - no runtime reconfiguration is supported. This hardware-strapped setting eliminates software overhead and ensures deterministic burst behavior across temperature and voltage ranges.

How does the ZZ sleep mode interact with chip enables and clock signals?

ZZ is asynchronous and overrides all synchronous controls: when asserted HIGH, the device enters low-power retention regardless of CE1/CE2/CE3 states or CLK/CEN activity. Data is preserved, and wake-up occurs within 20 ns of ZZ deassertion - faster than full re-initialization. During ZZ, CEN and CLK may be stopped entirely, reducing system-level power without affecting memory integrity.

Can CY7C1461KV33-133AXC operate with 2.5 V I/O voltage?

No - this variant (CY7C1461KV33-133AXC) is specified only for 3.3 V I/O (VDDQ = 3.3 V ± 0.3 V). While earlier revisions of the CY7C146x family supported dual 3.3 V/2.5 V I/O, the -133AXC speed grade and package configuration are validated exclusively at 3.3 V. Using 2.5 V on VDDQ violates absolute maximum ratings and risks data corruption or latch-up.

Is the CY7C1461KV33-133AXC pin-compatible with CY7C1463KV33-133AXC?

Yes - both share identical 100-pin TQFP footprint and signal mapping, but differ in organization: CY7C1461KV33 is 1M × 36, while CY7C1463KV33 is 2M × 18. They are functionally equivalent in timing, control logic, and feature set (NoBL™, ZZ, burst modes), allowing PCB reuse across density variants when layout accommodates the same pinout.