Infineon Technologies CY7C1361A-117AJC

Overview

CY7C1361A-117AJC from Cypress Semiconductor is a 256K × 36-bit synchronous flow-through burst SRAM with 117 MHz clock speed, 7.0 ns access time, and 100-pin TQFP (AJ) package. It implements pipelined address registration, interleaved/linear burst modes, and byte-selectable write control (BWa–BWd) for high-bandwidth memory subsystems in network packet buffers and DSP data caches.

For engineers reviewing the CY7C1361A-117AJC datasheet, CY7C1361A-117AJC pinout, CY7C1361A-117AJC application, or CY7C1361A-117AJC equivalent, key selection criteria include synchronous burst timing compliance, 3.3V core/2.5V I/O supply flexibility, JTAG boundary-scan support (TMS/TDI/TCK/TDO), and depth-expansion CE2 capability in AJ package versions.

Technical Context

This SRAM uses positive-edge-triggered CLK to register all synchronous inputs-addresses (A0/A1), chip enables (CE/CE2), burst controls (ADSC/ADSP/ADV), and write enables (BWa–BWd, BWE, GW). Internal two-bit counter generates sequential burst addresses, supporting both linear and interleaved sequences selected by MODE pin.

Asynchronous OE enables output drivers independently of clock, while ZZ input provides asynchronous low-power sleep mode. JTAG boundary scan (IEEE 1149.1) is implemented on TMS/TDI/TCK/TDO pins for BG and AJ packages only-absent in A-version TQFP-and supports LVTTL/LVCMOS-level test data shifting.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), JEDEC MO-140AC, 14 × 20 mm body, 0.5 mm pitch, lead-free (Pb-free) compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY7C1361A-117AJC, the -133AJC variant delivers higher throughput at the expense of tighter timing closure, while the IS61WV25636BLL-10BLI offers drop-in compatibility for basic burst operation but omits advanced features like CE2 and JTAG essential for scalable, testable systems.

Availability

CY7C1361A-117AJC 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 across extended production lifecycles.

Supply support for CY7C1361A-117AJC 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 communications, computing, and industrial markets.

The CY7C1361A belongs to Cypress' synchronous burst SRAM product line, engineered specifically for low-latency, high-throughput memory subsystems in networking and digital signal processing equipment.

FAQ

What is the function of the CE2 pin on CY7C1361A-117AJC?

The CE2 pin is an active-HIGH synchronous chip enable available only on AJ and BG package versions. It enables depth expansion by allowing multiple CY7C1361A devices to share the same data and address buses without bus contention, with one-cycle deselect timing ensuring clean transitions between devices during burst transfers.

Does CY7C1361A-117AJC support both interleaved and linear burst modes?

Yes. The MODE pin selects burst sequence: LOW configures linear burst (0,1,2,3), while NC or HIGH selects interleaved burst (0,2,1,3). This flexibility allows alignment with host processor or DMA controller addressing expectations, and both modes operate at full 117 MHz clock rate with identical timing parameters.

Can CY7C1361A-117AJC operate with 2.5V I/O voltage while maintaining 3.3V core supply?

Yes. VCCQ (pins 14, 16, 66) accepts either 3.3V or 2.5V, independent of VCC (3.3V ±5%/+10%). This dual I/O voltage capability permits direct interfacing with 2.5V FPGAs or ASICs without level translators, while preserving full-speed operation and signal integrity across the 100-pin TQFP interface.

Is JTAG boundary scan supported on all CY7C1361A package variants?

No. JTAG (TMS/TDI/TCK/TDO) is implemented only on BG (BGA) and AJ (TQFP) package versions. The A-version TQFP lacks these pins entirely. For production testability in high-density layouts, AJ package is required; design reuse of A-version footprints will not support IEEE 1149.1 scan chain integration.