Infineon Technologies CYD36S36V18-167BGXI

Overview

CYD36S36V18-167BGXI from Cypress Semiconductor is a 36-Mbit synchronous true dual-port SRAM organized as 1M × 36, operating at 167 MHz with 1.8 V/1.5 V core supply and 1.8 V LVCMOS or 2.5 V LVCMOS I/O on each port. It supports pipelined or flow-through read latency modes, deterministic collision resolution, and dual independent 36-bit data buses for simultaneous access to shared memory in high-throughput inter-processor communication systems.

For engineers reviewing the CYD36S36V18-167BGXI datasheet, CYD36S36V18-167BGXI pinout, CYD36S36V18-167BGXI application, or CYD36S36V18-167BGXI equivalent, key selection criteria include dual-port bandwidth (12.0 Gbps aggregate), JTAG boundary scan compliance, burst counter support, mailbox interrupt capability, and 484-ball PBGA package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

This device belongs to the FullFlex36 family and implements synchronous single-data-rate (SDR) operation with two independent clock domains - one per port - enabling concurrent read/write operations without arbitration overhead. Each port features configurable echo clocks, variable impedance matching (VIM), and selectable I/O standards including 1.8 V LVCMOS and 2.5 V LVCMOS.

The architecture includes deterministic access control logic that outputs a busy flag and returns the colliding address on back-to-back cycles, plus integrated mailbox registers with interrupt flags for inter-processor messaging. Burst counters with retransmit, mask, and mirror registers support sequential memory access without external address generation.

Key Specifications

Pinout & Package

Package: 484-ball plastic ball grid array (PBGA), 27 mm × 27 mm, 1.0 mm ball pitch, RoHS-compliant. Designed for high-density PCB layouts with controlled-impedance routing and thermal dissipation via center thermal pad (VSS balls).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous dual-port SRAM applications.

Compared with IS61WV102436BLL-167TQLI and AS7C33618B-167BIN, CYD36S36V18-167BGXI delivers deterministic latency control, dual-voltage I/O flexibility, and hardware-accelerated messaging - making it uniquely suited for real-time embedded systems requiring guaranteed timing and inter-processor coordination.

Availability

CYD36S36V18-167BGXI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motion control, and medical imaging systems requiring stable component supply across extended product lifecycles.

Supply support for CYD36S36V18-167BGXI 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) designs high-performance memory and programmable solutions for industrial, automotive, and communications markets, with emphasis on reliability and long-term supply stability.

CYD36S36V18-167BGXI belongs to the FullFlex36 synchronous dual-port SRAM product line, engineered specifically for deterministic, high-bandwidth inter-processor communication in real-time embedded systems where latency predictability and feature-rich memory interfacing are critical.

FAQ

What is the maximum supported data rate per port for CYD36S36V18-167BGXI?

The device operates at up to 167 MHz clock frequency, supporting 167 million transfers per second per port. With a 36-bit bus width, this yields 6.012 Gbps per port and 12.024 Gbps aggregate bandwidth across both ports. This performance is achievable under industrial temperature conditions with proper signal integrity layout and 1.8 V I/O supply.

Does CYD36S36V18-167BGXI support independent I/O voltage selection on each port?

Yes. PORTSTD0L/PORTSTD1L and PORTSTD0R/PORTSTD1R pins allow independent configuration of left and right port I/O standards as either 1.8 V LVCMOS or 2.5 V LVCMOS. This enables direct connection to heterogeneous logic families - for example, interfacing a 1.8 V FPGA on the left port and a 2.5 V ASIC on the right port - without level shifters.

How does deterministic collision resolution work in practice?

When both ports access the same memory location on consecutive clocks, the device asserts BUSYL or BUSYR within one cycle and drives the colliding address onto AD[19:0]. The "first busy" address is latched and readable immediately, eliminating arbitration uncertainty. This behavior is fully synchronous and repeatable, enabling hard real-time scheduling without software fallback paths.

Can the burst counter be used to implement a circular buffer without external logic?

Yes. By loading the mirror register with the start address and enabling CNTENL/CNTENR, the counter auto-increments on each clock. When reaching the end address, wrap-around is controlled by the mask register. CNTINTL/CNTINTR flags signal completion, allowing the host to reload the mirror register via RETL/RETR - all without CPU intervention or external address generation.