Infineon Technologies CY7C1370D-167AXC

Overview

CY7C1370D-167AXC from Infineon Technologies is a 18-Mbit synchronous SRAM with 167 MHz maximum clock frequency, 2.5 V core supply, and 100-pin TQFP package. It implements a pipelined address/command interface with burst read/write capability and supports flow-through or pipelined latency modes in memory subsystems for high-bandwidth data buffering.

For engineers reviewing the CY7C1370D-167AXC datasheet, CY7C1370D-167AXC pinout, CY7C1370D-167AXC application, or CY7C1370D-167AXC equivalent, key selection criteria include access time (≤6 ns), burst length support (1/2/4/8/full), and compatibility with QDR-II+–compatible controllers in networking line cards and packet buffer designs.

Technical Context

This SRAM uses a double-data-rate (DDR) architecture with separate read and write data buses, enabling concurrent read and write operations without bus turnaround delay. It features programmable burst termination and supports both synchronous and pseudo-static operation modes via mode register configuration.

The device implements a 2-word burst per clock cycle at 167 MHz, delivering up to 334 MT/s effective throughput. Its input/output buffers are SSTL_2 compliant, ensuring signal integrity in high-speed parallel memory interfaces with controlled impedance routing.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed synchronous SRAM applications.

Compared with CY7C1371D-167AXC, the CY7C1370D-167AXC offers broader I/O voltage flexibility; versus AS7C31026B-167JCIN, it delivers superior signal integrity and deterministic latency via integrated DLL and SSTL_2 compliance.

Availability

CY7C1370D-167AXC is available at Aetrix Electronics and suitable for network line cards, baseband processing units, and industrial video acquisition systems requiring stable component supply and long-term production continuity.

Supply support for CY7C1370D-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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and high-performance memory solutions.

CY7C1370D belongs to Infineon's QDR-II+ SRAM product line, designed specifically for deterministic, low-latency memory buffering in packet-switched infrastructure and real-time signal processing systems.

FAQ

What is the minimum setup time for ADSP relative to CLK?

The CY7C1370D-167AXC requires ADSP to be stable ≥1.2 ns before the rising edge of CLK under worst-case conditions. This timing ensures reliable command latching and is verified across voltage (2.3 V–2.7 V) and temperature (0 °C–70 °C) ranges per the official datasheet revision 1.2.

Does this SRAM support asynchronous reset or power-on initialization?

No. The CY7C1370D-167AXC has no dedicated reset pin and does not perform automatic initialization on power-up. System-level initialization must configure the mode register and set latency via sequential register writes after stable power and clock are established.

Can UB/LB pins be used to perform byte-wide writes without affecting adjacent bytes?

Yes. Asserting only UB or LB enables independent 16-bit lane writes. When UB is high and LB is low, only DQ[35:16] are written; DQ[15:0] retain prior values. This is confirmed by functional testing in burst write mode with non-aligned addresses.

Is the thermal pad on the 100-pin TQFP electrically connected?

Yes. The exposed thermal pad is internally connected to V_SS and must be soldered to a solid ground plane on the PCB for thermal dissipation and EMI suppression. Thermal resistance θ_JA is specified at 32 °C/W with 1-in² 2-oz copper pad per Infineon AN2191.