Infineon Technologies CY62167GE-45ZXI

Overview

CY62167GE-45ZXI from Infineon Technologies (formerly Cypress) is a 16-Mbit MoBL® Static RAM with embedded single-bit error-correcting code (ECC), configurable as 1M × 16 or 2M × 8, operating at 45 ns access time over 4.5–5.5 V supply, featuring an ERR output pin for real-time error detection and correction in mission-critical memory subsystems.

For engineers reviewing the CY62167GE-45ZXI datasheet, CY62167GE-45ZXI pinout, CY62167GE-45ZXI application, or CY62167GE-45ZXI equivalent, this device supports industrial-grade SRAM replacement with dual-voltage operation, byte-selectable writes, TTL-compatible I/O, and low-power standby down to 5.5 µA - critical for embedded controllers, medical data loggers, and avionics memory buffers requiring ECC integrity.

Technical Context

The CY62167GE integrates on-die ECC encoding/decoding logic that detects and corrects single-bit errors during read cycles, signaled via the dedicated ERR output pin. It supports both single CE (CE only) and dual CE (CE1/CE2) configurations, enabling flexible chip select architecture in multi-SRAM systems.

Its Byte Power-down feature activates automatically when both BHE and BLE are deasserted, forcing the device into ultra-low-power standby regardless of CE state. The 48-pin TSOP I package allows configuration as either 1M × 16 (BYTE = VCC) or 2M × 8 (BYTE = VSS), with A20 exposed on pin 45 in the latter mode.

Key Specifications

Pinout & Package

Package: 48-pin TSOP I (Type I, 12 × 20 mm body, 0.5 mm pitch). Pinout validated per Figure 6 (CY62167GE Dual CE with ERR) in 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 AS6C1008-55ZIN, CY62167GE-45ZXI uniquely delivers hardware-accelerated ECC correction with visible ERR feedback and 45 ns performance in a single 48-pin TSOP I package - reducing BOM count, validation effort, and failure-in-time (FIT) rate in safety-aware systems.

Availability

CY62167GE-45ZXI is available at Aetrix Electronics and suitable for medical data loggers, avionics flight recorders, and industrial PLC memory modules requiring stable component supply, long-lifecycle support, and guaranteed ECC functionality.

Supply support for CY62167GE-45ZXI 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 microcontrollers, and memory solutions with emphasis on reliability and industrial longevity.

CY62167GE belongs to the MoBL® (Mobile Bit-Low-power) SRAM product line, designed specifically for battery-sensitive and mission-critical embedded systems requiring ECC integrity, fast access, and wide temperature operation without external support circuitry.

FAQ

What is the function of the ERR pin on CY62167GE-45ZXI?

The ERR pin is an open-drain output that asserts HIGH during a read cycle when a single-bit error is detected and corrected by the on-die ECC engine. It remains LOW otherwise. This signal enables external logic or firmware to log error events without interrupting memory access, and it does not indicate uncorrectable multi-bit errors.

Can CY62167GE-45ZXI operate in both 1M × 16 and 2M × 8 modes on the same PCB?

Yes - the 48-pin TSOP I package supports both configurations via the BYTE pin: tie BYTE to VCC for 1M × 16 mode (standard 16-bit bus), or to VSS for 2M × 8 mode (20-bit address space with A20 on pin 45). In 2M × 8 mode, BHE, BLE, and I/O8–I/O14 are unused and may be left floating.

Does CY62167GE-45ZXI support automatic error correction write-back?

No - the device performs real-time single-bit error correction during read operations only, and does not perform automatic write-back of corrected data to the memory array. Corrected data appears on the I/O bus, but the original corrupted bit remains stored unless explicitly rewritten by the host system.

Is the 45 ns access time guaranteed across the full industrial temperature range?

Yes - the 45 ns access time is specified and guaranteed over the full industrial temperature range (–40 °C to +85 °C) and supply voltage range (4.5 V to 5.5 V), as confirmed in the AC Switching Characteristics table (page 11) of datasheet 001-81537 Rev. *R.