Infineon Technologies CY7C1372DV25-167AXCT

Overview

CY7C1372DV25-167AXCT from Cypress Semiconductor is a 18-Mbit (1M × 18) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory buffering in networking and telecom data paths. It operates at 167 MHz with 3.4 ns clock-to-output time, uses single 2.5 V core (VDD) and I/O (VDDQ) supplies, supports linear/interleaved burst modes, and features byte-write capability via BWa–BWb inputs.

For engineers reviewing the CY7C1372DV25-167AXCT datasheet, CY7C1372DV25-167AXCT pinout, CY7C1372DV25-167AXCT application, or CY7C1372DV25-167AXCT equivalent, key selection criteria include its 167 MHz zero-wait-state operation, synchronous self-timed writes, ZZ sleep mode, JEDEC-compliant 100-pin TQFP package, and compatibility with ZBT™-based system designs.

Technical Context

The device implements fully registered pipelined architecture: all address, control, and data inputs pass through input registers on CLK rising edge; all outputs are latched by output registers on the same edge. Its NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without wait states.

Burst addressing is controlled by ADV/LD and MODE pins-linear or interleaved order-and synchronized write cycles use internal self-timed circuitry qualified by WE, CEN, and byte-write enables. Three chip enables (CE1, CE2, CE3) provide hierarchical bank selection, while asynchronous OE manages output three-state timing independent of clock phase.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 20 mm × 1.4 mm, Pb-free, JEDEC standard). Pinout validated per Cypress Document 38-05558 Rev. *P, Figure 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V2115L16PF and IS61WV102418BLL-167TQLI, CY7C1372DV25-167AXCT uniquely delivers NoBL™-enabled back-to-back operation, MODE-selectable burst order, and dedicated 2.5 V VDDQ for I/O voltage isolation - making it optimal for high-efficiency, low-latency data path buffering.

Availability

CY7C1372DV25-167AXCT is available at Aetrix Electronics and suitable for telecom line card buffering, network packet switch fabric, and industrial real-time motion controller designs requiring stable component supply and long-term obsolescence mitigation.

Supply support for CY7C1372DV25-167AXCT 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, PSoC mixed-signal ICs, and USB/USB-C solutions.

CY7C1372DV25 belongs to Cypress's NoBL™ SRAM product line, engineered specifically for zero-latency, high-frequency data buffering in telecom infrastructure, enterprise switching, and real-time embedded control systems.

FAQ

What is the function of the MODE pin on CY7C1372DV25-167AXCT?

The MODE pin is a static strap input that selects burst address order: pulled HIGH (or left floating) enables interleaved burst mode; pulled LOW enables linear burst mode. It must be held stable during operation and is sampled at power-up. This setting determines how the internal address counter increments during burst reads/writes, directly impacting compatibility with legacy ZBT™ controller firmware.

How does the ZZ pin operate, and what is the errata requirement?

The ZZ pin enables deep-sleep mode when asserted LOW, reducing standby current to ≤70 mA. Per Cypress errata on page 30 of Document 38-05558, ZZ (Pin 64 in TQFP) must be externally tied to ground - it is not internally biased and will not function correctly if left floating or pulled HIGH. This is a mandatory hardware requirement for reliable sleep-mode entry.

Can CY7C1372DV25-167AXCT be used in place of CY7C1370DV25 devices?

No - they are not pin-compatible or functionally interchangeable. CY7C1372DV25 is 1M × 18 (18-bit data bus), while CY7C1370DV25 is 512K × 36 (36-bit bus). Their pinouts differ significantly: CY7C1372DV25 uses BWa/BWb and DQa/DQb/DQPa/DQPb; CY7C1370DV25 uses BWa–BWd and four full 9-bit data groups. Board layout and controller interface logic are incompatible.

Is JTAG boundary scan functional on CY7C1372DV25-167AXCT?

JTAG (IEEE 1149.1) is physically present but not guaranteed functional per errata on page 30: "JTAG testing should be performed with these devices in BYPASS mode as the JTAG functionality is not guaranteed." The TAP controller lacks full production validation; therefore, boundary scan should not be relied upon for production test - only BYPASS mode is supported for basic chain integrity checks.