Infineon Technologies CY62167G18-55BVXIT

Overview

CY62167G18-55BVXIT from Infineon Technologies (formerly Cypress) is a 16-Mbit MoBL® SRAM with embedded single-bit error-correcting code (ECC), configurable as 1M × 16 or 2M × 8, operating at 55 ns access time over 1.65–2.2 V or 4.5–5.5 V supply, featuring ultra-low 5.5 µA typical standby current and an ERR pin for real-time ECC status indication - deployed in industrial control memory buffers requiring data integrity.

For engineers reviewing the CY62167G18-55BVXIT datasheet, CY62167G18-55BVXIT pinout, CY62167G18-55BVXIT application, or CY62167G18-55BVXIT equivalent, key selection criteria include dual-voltage support, byte-selectable ECC-enabled read/write operation, TSOP I package compatibility, and deterministic ERR signal behavior during single-bit correction events.

Technical Context

This SRAM integrates dedicated ECC encode/decode logic within the memory array, performing on-the-fly single-bit error detection and correction during every read cycle without external logic. The ERR output asserts high only when a correctable error is found and corrected in the accessed word.

It supports two chip-enable architectures (single CE or dual CE1/CE2), byte power-down via simultaneous BHE/BLE deassertion, and flexible data bus configuration (16-bit or 8-bit) via BYTE pin control in TSOP I packages. Address range spans A0–A19 (1M×16) or A0–A20 (2M×8), with NC pins reserved for future density expansion.

Key Specifications

Pinout & Package

The CY62167G18-55BVXIT is supplied in a Pb-free 48-pin TSOP I (Type I) surface-mount package, with pin 1 located at bottom-left corner when notch faces upward. Pin functions are validated per Figure 2 and Figure 6 of datasheet 001-81537 Rev. *R.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102416BLL-10MLI and R1EX24160AS0C#U0, CY62167G18-55BVXIT uniquely delivers dual-voltage support, deterministic ERR signaling, and sub-10 µA standby - making it the sole option meeting concurrent industrial temperature, ECC autonomy, and power budget requirements.

Availability

CY62167G18-55BVXIT is available at Aetrix Electronics and suitable for industrial PLC memory buffers, medical imaging cache modules, avionics flight management units, and test equipment waveform acquisition systems requiring stable component supply across long product lifecycles.

Supply support for CY62167G18-55BVXIT 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 acquired Cypress Semiconductor in 2020 and maintains full product continuity, technical support, and manufacturing for the MoBL® SRAM portfolio including CY62167G series.

This device belongs to the MoBL® (Mobile Bitline) low-power SRAM product line, engineered specifically for battery-operated and thermally constrained industrial and medical systems requiring ECC assurance without performance penalty.

FAQ

Does CY62167G18-55BVXIT support automatic write-back after ECC correction?

No. The device performs single-bit error correction on read-only basis and does not modify the stored data in memory array. Corrected data appears on I/O lines, but the original erroneous bit remains uncorrected in the cell - firmware must initiate a write cycle if permanent correction is required.

Can the ERR pin be left unconnected if ECC status monitoring is not needed?

Yes. The ERR pin is an open-drain output and may be left floating when unused. It does not affect memory functionality or ECC operation. No pull-up or termination is required unless the host system actively monitors the signal for diagnostics.

What happens to the BHE and BLE pins in 2M × 8 configuration?

In 2M × 8 mode (BYTE = VSS), BHE, BLE, and I/O8 through I/O14 are disabled and must be left floating. Only I/O0–I/O7 remain active, and A20 becomes functional as the 21st address line - enabling full 2M-word addressing without external demultiplexing.

Is the 48-pin TSOP I package RoHS-compliant and lead-free?

Yes. The CY62167G18-55BVXIT is manufactured in a Pb-free 48-pin TSOP I package compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) - suitable for standard reflow soldering profiles.