Infineon Technologies CY7C1386KV33-167AXCT

Overview

CY7C1386KV33-167AXCT from Cypress Semiconductor is a 18-Mbit pipelined synchronous SRAM with 512K × 36 organization, supporting 167 MHz bus operation (t_CO = 3.4 ns), 3.3 V core (VDD), and dual-voltage I/O (VDDQ = 2.5 V or 3.3 V). It implements registered address/data paths, synchronous self-timed writes, and interleaved/linear burst modes via ADV/ADSP/ADSC control - deployed in high-speed L2 cache subsystems for RISC and DSP processors.

For engineers reviewing the CY7C1386KV33-167AXCT datasheet, CY7C1386KV33-167AXCT pinout, CY7C1386KV33-167AXCT application, or CY7C1386KV33-167AXCT equivalent, key selection criteria include pipelined enable register behavior for depth expansion, byte-write granularity (BWA–BWD + BWE), ZZ sleep mode timing, and JEDEC-compliant 100-pin TQFP package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

This SRAM uses a two-bit wraparound burst counter synchronized to CLK's rising edge, with ADSP/ADSC selecting address capture source and MODE determining burst sequence (interleaved or linear). All synchronous inputs - addresses, CE1/CE2/CE3, BWX, BWE, GW, ADV - are registered on CLK rise, while OE and ZZ remain asynchronous.

The device integrates pipelined output enable logic that delays tristate assertion by one clock cycle during deselect, enabling seamless depth expansion without wait states. Write cycles are self-timed and support 1–4 byte granularity via BWA–BWD and BWE, with GW overriding all byte-select controls to enable full-word writes.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), JEDEC-standard Pb-free, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102432BLL-167TQLI and MT55LCS0128H18-167:G, the CY7C1386KV33-167AXCT uniquely delivers 512K × 36 density with ADSP/ADSC arbitration, ZZ sleep, and pipelined enable - making it irreplaceable in legacy cache designs requiring exact timing and control signal compatibility.

Availability

CY7C1386KV33-167AXCT is available at Aetrix Electronics and suitable for high-speed L2 cache subsystems, DSP data memory buffers, and industrial motion controller memory requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY7C1386KV33-167AXCT 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 programmable logic solutions for industrial, automotive, and communications markets.

The CY7C1386KV33 belongs to Cypress's high-speed synchronous SRAM product line, engineered specifically for low-latency, burst-oriented cache and buffer applications in RISC/DSP-based systems where deterministic timing and depth expansion capability are critical.

FAQ

What is the function of the MODE pin on CY7C1386KV33-167AXCT?

The MODE pin selects burst address sequencing: logic HIGH configures interleaved burst order (e.g., 0, 2, 4, 6…), while logic LOW selects linear order (e.g., 0, 1, 2, 3…). This setting is latched at power-up or reset and determines how the internal two-bit counter increments during ADV-driven burst cycles - directly matching processor cache line fetch requirements.

How does the pipelined enable register improve system performance?

The pipelined enable register delays output buffer tristate assertion by exactly one clock cycle after chip deselect. This allows the final valid data word to propagate fully before bus release, eliminating wait states when multiple CY7C1386KV33-167AXCT devices are depth-expanded - maintaining continuous 167 MHz throughput without external glue logic.

Can CY7C1386KV33-167AXCT operate with 2.5 V I/O while using 3.3 V core?

Yes. VDDQ (pins 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78) must be supplied at 2.5 V, while VDD (pins 3, 6, 9, 12, 15, 18, 81, 84, 87, 90, 93, 96, 99) remains at 3.3 V. All I/O pins (DQ/DQP) and control inputs (OE, BWA–BWD, etc.) are JESD8-5 compliant at 2.5 V, ensuring safe interfacing with 2.5 V logic families.

Is ZZ sleep mode compatible with asynchronous OE control?

Yes. ZZ sleep (active HIGH) and OE (active LOW) operate independently: ZZ places the core in low-power retention while preserving data, whereas OE controls only output driver state. When ZZ is asserted, outputs are automatically tristated regardless of OE level - but OE retains full control during normal operation (ZZ = LOW), including masking during first-cycle deselect recovery.