Infineon Technologies CYPT1542AV18-250GCMB

Overview

CYPT1542AV18-250GCMB from Infineon Technologies (formerly Cypress) is a radiation-hardened 72-Mbit QDR® II+ SRAM with 4M × 18 organization, RadStop™ technology, 250 MHz clock frequency, and 165-ball CCGA package. It delivers concurrent read/write operations via independent DDR ports, supports two-word burst transfers, and operates at 1.8 V core / 1.4–1.8 V I/O with HSTL interfaces - deployed in spaceborne avionics data buffers requiring latch-up immunity >120 MeV·cm²/mg and total ionizing dose tolerance up to 300 krad(Si).

For engineers reviewing the CYPT1542AV18-250GCMB datasheet, CYPT1542AV18-250GCMB pinout, CYPT1542AV18-250GCMB application, or CYPT1542AV18-250GCMB equivalent, key selection criteria include radiation performance (neutron fluence 2.0 × 10¹⁴ n/cm²), DLL-enabled 2-cycle read latency, echo clock (CQ/CQ#) timing support, JTAG 1149.1 test access, and depth expansion via RPS/WPS controls.

Technical Context

This QDR II+ SRAM implements a synchronous pipelined architecture with physically separate read and write data paths, eliminating bus turnaround delays. It uses dual-edge-triggered DDR I/O on both ports at 250 MHz (500 MT/s), with address latching on K (rising edge for reads) and K# (falling edge for writes) - all synchronized to a single multiplexed A[20:0] bus.

The device integrates a delay-locked loop (DLL) for precise data placement, supports byte-write masking via BWS[1:0], and provides QVLD strobe for valid data indication. Its RadStop™ hardening enables operation under extreme radiation environments: SEL immunity at 125 °C, soft error rate ≤1 × 10⁻¹⁰ upsets/bit-day with external SECDED EDAC, and dose rate survivability up to 1.5 × 10¹¹ rad(Si)/sec.

Key Specifications

Pinout & Package

Package: 165-ball Ceramic Column Grid Array (CCGA), 21 mm × 25 mm × 2.83 mm body height, column grid layout with solder columns (non-qualified prototyping variant CYPT1542AV18 uses same footprint without attached columns).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar radiation-hardened QDR SRAM applications.

Compared with IS61WV102418BLL-10TLI and MT47H64M16HR-37E:H, CYPT1542AV18-250GCMB uniquely delivers guaranteed radiation hardness, deterministic 2-cycle latency, and true concurrent R/W - making it irreplaceable in mission-critical space and nuclear applications where reliability outweighs cost or density trade-offs.

Availability

CYPT1542AV18-250GCMB is available at Aetrix Electronics and suitable for spacecraft onboard data buffers, high-energy physics detector memory subsystems, and satellite payload command processors requiring stable component supply across extended product lifecycles.

Supply support for CYPT1542AV18-250GCMB 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and radiation-hardened memory solutions.

CYPT1542AV18-250GCMB belongs to Infineon's Rad-Hard QDR® II+ SRAM product line, engineered specifically for high-reliability aerospace and defense systems where deterministic timing, latch-up immunity, and TID tolerance are non-negotiable.

FAQ

What is the difference between CYPT1542AV18-250GCMB and CYRS1542AV18?

CYPT1542AV18-250GCMB is the non-qualified prototyping version of CYRS1542AV18, sharing identical functional behavior, timing, and electrical specs. The "PT" suffix indicates it is supplied in the same 165-ball CCGA package but without solder columns attached - intended for evaluation and early development prior to flight-qualified CYRS1542AV18 procurement.

Does CYPT1542AV18-250GCMB support JTAG boundary scan?

Yes - it implements full IEEE 1149.1 JTAG test access port with TCK, TMS, TDI, TDO, and TRST pins. Boundary scan supports production testing, interconnect verification, and in-system debugging of high-density PCBs used in radiation-hardened platforms.

Can CYPT1542AV18-250GCMB operate at 125 °C ambient temperature?

Yes - it is fully characterized and qualified for operation from –55 °C to +125 °C ambient. Its RadStop™ hardening and ceramic CCGA package ensure stable performance at maximum junction temperature, with latch-up immunity tested at 125 °C per MIL-STD-883 Method 1080.

Is external SECDED EDAC required for radiation tolerance?

External SECDED EDAC is required to achieve the stated soft error rate of ≤1 × 10⁻¹⁰ upsets/bit-day under heavy ion and proton irradiation. The device itself provides no on-die error correction - QVLD and echo clocks facilitate robust external EDAC implementation but do not replace it.