Infineon Technologies CY7C1357C-133AXCT

Overview

CY7C1357C-133AXCT from Infineon Technologies (formerly Cypress) is a 9-Mbit synchronous flow-through SRAM with NoBL™ architecture, configured as 512K × 18, operating at 133 MHz with zero wait states and 6.5 ns clock-to-output delay. It features registered inputs, synchronous self-timed writes, three chip enables, and supports linear/interleaved burst modes for high-throughput data buffering in network packet processors.

For engineers reviewing the CY7C1357C-133AXCT datasheet, CY7C1357C-133AXCT pinout, CY7C1357C-133AXCT application, or CY7C1357C-133AXCT equivalent, key selection criteria include burst order support (linear/interleaved), VDDQ voltage flexibility (2.5 V/3.3 V), ZZ sleep mode current (≤40 mA), JTAG boundary scan compliance, and TQFP-100 package compatibility with legacy ZBT™ designs.

Technical Context

The device implements a synchronous flow-through architecture where all address, control, and data inputs are registered on the rising edge of CLK, with CEN qualifying clock activity. Internal NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without dead cycles.

Burst access uses ADV/LD to latch address and initiate linear or interleaved sequences; write operations employ synchronous self-timed circuitry with BWB/BWA byte write controls, while OE provides asynchronous output tri-state control independent of clock timing.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L133PF and CY7C1355C-133AXCT, the CY7C1357C-133AXCT uniquely delivers 18-bit bus width with NoBL™ zero-latency operation in a single-clock domain-making it optimal for cost-sensitive, space-constrained 18-bit datapath designs requiring deterministic burst throughput.

Availability

CY7C1357C-133AXCT is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply across multi-year production cycles.

Supply support for CY7C1357C-133AXCT 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, and memory solutions with emphasis on reliability and industrial longevity.

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

FAQ

What is the difference between CY7C1357C-133AXCT and CY7C1355C-133AXCT?

The CY7C1357C-133AXCT is organized as 512K × 18 (9 Mbit), while the CY7C1355C-133AXCT is 256K × 36 (also 9 Mbit). Both share identical NoBL™ architecture, timing specs (133 MHz, 6.5 ns tCO), pinout in TQFP-100, and feature set-including JTAG, ZZ mode, and burst control-but differ in data bus width and address depth mapping.

Does CY7C1357C-133AXCT support both linear and interleaved burst modes?

Yes, the device supports both linear and interleaved burst orders, selected via the MODE pin state at reset. Linear mode increments addresses sequentially (e.g., 0x0000, 0x0001), while interleaved mode follows IEEE 1149.1-defined patterns useful for cache-line-aligned accesses in processor coherency protocols.

Can CY7C1357C-133AXCT operate with 2.5 V VDDQ while maintaining 133 MHz performance?

Yes, the datasheet specifies full 133 MHz operation and 6.5 ns tCO at both 2.5 V and 3.3 V VDDQ. The core VDD remains 3.3 V; only the I/O power domain is adjustable-enabling seamless integration with 2.5 V FPGA I/O banks without performance penalty.

Is JTAG boundary scan enabled by default on CY7C1357C-133AXCT?

JTAG is factory-enabled and compliant with IEEE 1149.1. The TAP controller operates independently of memory function; no configuration fuse or strap is required. Boundary scan testing can be performed immediately after power-up using standard TCK/TMS/TDI/TDO sequences per the documented state diagram.