Infineon Technologies CY7C1370KV33-167AXI

Overview

CY7C1370KV33-167AXI from Cypress Semiconductor is a 18-Mbit (512K × 36) synchronous pipelined SRAM with NoBL™ architecture and on-chip ECC, designed for high-throughput memory subsystems in networking and telecom line cards. It operates at 167 MHz with 3.4 ns max access time, supports zero-wait-state back-to-back read/write cycles, and uses 3.3 V core / 2.5 V I/O supplies in a 100-pin TQFP package.

For engineers reviewing the CY7C1370KV33-167AXI datasheet, CY7C1370KV33-167AXI pinout, CY7C1370KV33-167AXI application, or CY7C1370KV33-167AXI equivalent, key selection criteria include burst mode compatibility (linear/interleaved), byte-write granularity (BWa–BWd), synchronous self-timed write control, JTAG boundary scan support, and ECC-enabled soft error resilience in mission-critical buffer applications.

Technical Context

This SRAM implements fully registered pipelined operation: all address, control, and data inputs are latched on the rising edge of CLK, and outputs are driven through output registers synchronized to CLK. The internal NoBL™ logic eliminates bus latency by enabling consecutive read/write operations without wait states.

It integrates on-chip ECC encoding/decoding for single-bit error correction and double-bit error detection, reducing soft error rate in radiation-sensitive environments. Burst addressing is controlled via ADV/LD and MODE pins, supporting both linear and interleaved orders, while ZZ enables asynchronous sleep mode to reduce standby power.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), Pb-free, JEDEC-compliant, with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and IS61WV102436BLL-167TQLI, CY7C1370KV33-167AXI uniquely delivers integrated SEC-DED ECC in a 512K × 36 configuration at 167 MHz, enabling simpler, more reliable designs in telecom and avionics where soft error mitigation is mandatory.

Availability

CY7C1370KV33-167AXI is available at Aetrix Electronics and suitable for telecom line cards, network processor caches, industrial control backplanes, and avionics data acquisition systems requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for CY7C1370KV33-167AXI 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 analog/digital solutions for industrial, automotive, and communications markets.

CY7C1370KV33-167AXI belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-latency, high-bandwidth memory subsystems in infrastructure equipment where deterministic timing and data integrity are non-negotiable.

FAQ

What is the function of the MODE pin on CY7C1370KV33-167AXI?

The MODE pin is a strap input that configures burst address order: tied HIGH selects interleaved burst mode, pulled LOW selects linear burst mode. It must be held stable during operation; floating defaults to HIGH (interleaved). This setting directly determines how the internal address counter increments during burst reads/writes and must match the memory controller's expected sequence.

Does CY7C1370KV33-167AXI support 2.5 V-only I/O operation?

Yes - VDDQ is independently supplied and rated for 2.5 V ±0.2 V, while VDD is fixed at 3.3 V ±0.3 V. This dual-supply architecture isolates I/O signaling from core logic, reducing switching noise and enabling direct interfacing with 2.5 V ASICs or FPGAs without level shifters, provided VDDQ remains within specification during all operational modes including ZZ sleep.

How does the ZZ pin interact with clock enable (CEN) and chip enables?

ZZ is asynchronous and overrides all synchronous controls: asserting ZZ HIGH forces immediate entry into low-power sleep mode regardless of CEN, CE1/CE2/CE3, or CLK state. Upon deassertion (LOW), the device exits sleep and resumes normal operation after a tZZEX (100 ns typical) recovery delay - during which CEN and CE signals must be valid before next CLK edge.

Can CY7C1370KV33-167AXI perform partial writes without affecting adjacent bytes?

Yes - using BWa–BWd with WE active, any combination of the four 8-bit byte lanes (DQa/DQPa through DQd/DQPd) can be written independently. Unselected bytes retain their prior values; the synchronous self-timed write circuitry ensures atomicity per enabled byte group, eliminating read-modify-write cycles and preserving data coherency across partial updates.