Infineon Technologies CY7C1441KV25-133BZXIT

Overview

CY7C1441KV25-133BZXIT from Cypress Semiconductor is a 36-Mbit (1M × 36) synchronous flow-through SRAM with 133-MHz bus operation, 2.5-V core/I/O supply, 6.5 ns clock-to-output delay, and JTAG boundary scan support in a 165-ball FBGA package. It serves as high-speed secondary cache memory for Pentium-class microprocessors requiring burst-mode data access with interleaved or linear addressing.

For engineers reviewing the CY7C1441KV25-133BZXIT datasheet, CY7C1441KV25-133BZXIT pinout, CY7C1441KV25-133BZXIT application, or CY7C1441KV25-133BZXIT equivalent, key selection criteria include synchronous burst timing, byte-write granularity via BWx/BWE, dual address strobe support (ADSP/ADSC), ZZ sleep mode, and JEDEC JESD8-5 I/O compatibility.

Technical Context

The device implements a 2-bit on-chip wraparound burst counter that captures A[1:0] at ADSP/ADSC assertion and auto-increments addresses during burst cycles. All synchronous inputs-including address, CE1/CE2/CE3, ADSP/ADSC/ADV, BWx, BWE, GW, and CLK-are registered on the rising edge of CLK.

Asynchronous controls OE and ZZ operate independently of CLK: OE enables tri-state output control with masking during deselected-state read startup, while ZZ places the device in low-power sleep with data retention. MODE pin statically selects interleaved (HIGH) or linear (LOW) burst order, supporting Pentium-compatible cache protocols.

Key Specifications

Pinout & Package

The CY7C1441KV25-133BZXIT is housed in a Pb-free 165-ball Fine-Pitch Ball Grid Array (FBGA) package measuring 15 mm × 17 mm × 1.4 mm, optimized for high-speed signal integrity and thermal dissipation in cache subsystems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C361024B-133BIN and IS61WV102436B-133TQLI, the CY7C1441KV25-133BZXIT uniquely combines JTAG testability, dual-burst-mode flexibility, and guaranteed 6.5 ns tCDV across temperature - making it optimal for safety-critical or high-mix production environments requiring full traceability and cache protocol agility.

Availability

CY7C1441KV25-133BZXIT is available at Aetrix Electronics and suitable for secondary cache subsystems, high-speed network packet buffers, industrial motion controller FIFOs, and avionics data acquisition systems requiring stable component supply and long-term manufacturability.

Supply support for CY7C1441KV25-133BZXIT 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, PSoC programmable system-on-chip, and USB-C/USB-PD solutions.

The CY7C1441KV25 belongs to Cypress's high-speed synchronous SRAM product line, engineered specifically for low-latency cache and buffering applications in x86-compatible and custom high-end embedded systems.

FAQ

What is the function of the MODE pin, and how must it be configured?

The MODE pin selects burst address sequence: HIGH (or floating) enables interleaved burst (Pentium-compatible), LOW enables linear burst. It is a static strap pin with internal pull-up; must be set before operation and held stable during all accesses. Incorrect or dynamic toggling causes undefined burst address generation and data corruption.

How does the ZZ sleep mode affect power consumption and data retention?

When ZZ is driven HIGH, the device enters non-time-critical sleep mode with core clocks gated and I/O drivers disabled, reducing ICC to ≤100 µA while preserving all stored data. Data remains valid for ≥24 hours at +85°C. ZZ has an internal pull-down, so leaving it unconnected defaults to active operation.

Can ADSP and ADSC be used simultaneously, and what happens if both are asserted?

No - ADSP and ADSC are mutually exclusive. When both are asserted LOW, the device recognizes only ADSP and ignores ADSC. This priority ensures deterministic address capture in mixed-processor/controller systems. CE1 must be active for either strobe to take effect; otherwise, both are masked.

What is the role of the ADV signal during burst operations?

ADV controls automatic address advancement: when asserted LOW on a rising CLK edge, it increments the internal 2-bit burst counter to generate the next sequential or interleaved address. It is sampled synchronously and must be timed to align with burst clock edges - not used during single-access cycles.