Infineon Technologies CY7C1387KV33-167AXC

Overview

CY7C1387KV33-167AXC from Cypress Semiconductor is a 18-Mbit synchronous pipelined SRAM configured as 1M × 18, operating at 167 MHz with 3.3 V core (VDD) and 2.5/3.3 V I/O (VDDQ) supplies, 3.4 ns access time, and registered inputs/outputs for depth-expansion-capable cache subsystems in high-performance embedded controllers.

For engineers reviewing the CY7C1387KV33-167AXC datasheet, CY7C1387KV33-167AXC pinout, CY7C1387KV33-167AXC application, or CY7C1387KV33-167AXC equivalent, key selection criteria include burst mode support (interleaved/linear), synchronous self-timed write capability, ZZ sleep mode, byte-write control (BWA–BWD + BWE), and JEDEC-standard 100-pin TQFP packaging.

Technical Context

This SRAM implements a two-bit synchronous wraparound burst counter controlled by ADV, ADSP, and ADSC inputs, enabling deterministic linear or interleaved address sequencing based on MODE pin state. All address, data, and control inputs (CE1/CE2/CE3, GW, BWE, BWX) are registered on the rising edge of CLK.

It supports asynchronous OE for output tristating and asynchronous ZZ for non-time-critical sleep mode with data retention. Write operations are self-timed and synchronized to CLK, with global write (GW) overriding byte-write selects (BWA–BWD) to enable full-word writes without external timing control.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102418BLL-167BLI and MT55LCS0102418A-167:J, the CY7C1387KV33-167AXC uniquely integrates VDDQ voltage separation, ZZ sleep, and self-timed writes - reducing system-level power, board area, and controller firmware overhead in real-time embedded designs.

Availability

CY7C1387KV33-167AXC is available at Aetrix Electronics and suitable for secondary cache subsystems, network packet buffering, and industrial motion control applications requiring stable component supply, long-term lifecycle support, and JEDEC-compliant 100-pin TQFP packaging.

Supply support for CY7C1387KV33-167AXC 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 systems-on-chip, and USB/USB-C solutions.

The CY7C1387KV33 belongs to Cypress's high-speed synchronous SRAM product line, designed specifically for low-latency, depth-expandable cache and buffer applications in networking, industrial automation, and avionics systems.

FAQ

What is the function of the MODE pin on CY7C1387KV33-167AXC?

The MODE pin selects burst address sequence behavior: logic LOW configures interleaved burst order (e.g., 0, 2, 4, 6…), while logic HIGH selects linear burst order (e.g., 0, 1, 2, 3…). It is sampled synchronously on the rising edge of CLK during the first cycle of a burst access and determines how the internal two-bit counter increments addresses during ADV-driven bursts.

Can CY7C1387KV33-167AXC operate with VDDQ = 2.5 V while VDD = 3.3 V?

Yes - the device supports independent 3.3 V core supply (VDD) and 2.5 V I/O supply (VDDQ), enabling direct interfacing with 2.5 V logic families while maintaining full 167 MHz operation. This configuration is explicitly validated in the datasheet's Electrical Characteristics table and requires no derating of timing parameters.

How does the ZZ sleep mode affect timing and power consumption?

When ZZ is driven HIGH, the device enters a non-time-critical sleep state with typical standby current reduced to 25 µA (max 100 µA) while retaining all stored data. All outputs go high-impedance, and internal clocks are gated - no CLK signal is required during sleep. Exit time to active operation is 20 ns (max), guaranteed by internal wake-up circuitry.

Is CY7C1387KV33-167AXC pin-compatible with CY7C1386KV33-167AXC?

No - although both use 100-pin TQFP packages, their pinouts differ significantly: CY7C1386KV33 (512K × 36) allocates dedicated DQ/DQP pins for 36-bit width, while CY7C1387KV33 (1M × 18) repurposes several pins as address bits (A[2:18]) and removes redundant DQP lines. Direct substitution would cause functional failure and electrical mismatch.