Infineon Technologies CY62167G30-45ZXIT

Overview

CY62167G30-45ZXIT from Infineon Technologies (formerly Cypress) is a 16-Mbit MoBL® SRAM with embedded ECC, configurable as 1M × 16 or 2M × 8, operating at 45 ns access time across 4.5–5.5 V supply, featuring ERR pin for single-bit error detection/correction and ultra-low 5.5 µA typical standby current. It serves in industrial control systems requiring data integrity during power-constrained operation.

For engineers reviewing the CY62167G30-45ZXIT datasheet, CY62167G30-45ZXIT pinout, CY62167G30-45ZXIT application, or CY62167G30-45ZXIT equivalent, key selection criteria include dual-voltage support (4.5–5.5 V), ECC-enabled reliability, TSOP I package compatibility, byte-select write capability via BHE/BLE, and ERR signal assertion on correction events.

Technical Context

This SRAM integrates dedicated ECC encode/decode logic that detects and corrects single-bit errors in real time during read cycles, with ERR output asserted high only when correction occurs-no automatic write-back. The device supports both single and dual chip enable configurations and implements Byte Power-down: asserting both BHE and BLE low forces immediate transition to standby mode regardless of CE state.

It operates in two distinct voltage domains: full-speed 45 ns timing at 4.5–5.5 V, and slower 55 ns at 1.65–2.2 V. Addressing flexibility includes A20 pin reuse in 2M × 8 mode (TSOP I), while NC pins support future density expansion. TTL-compatible I/Os ensure interoperability with legacy controllers without level-shifting.

Key Specifications

Pinout & Package

Package: 48-pin TSOP I (Type I, 12 mm × 20 mm), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV102416BLL-10MLI and MT45W8MW16BGX-5 IT:B, CY62167G30-45ZXIT delivers hardware ECC with zero software or controller burden, ultra-low standby power, and plug-and-play compatibility with legacy 5 V buses - making it optimal for safety-aware, power-constrained, and cost-sensitive industrial designs.

Availability

CY62167G30-45ZXIT is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging subsystems, avionics data loggers, and test equipment requiring stable component supply and long-term lifecycle assurance.

Supply support for CY62167G30-45ZXIT 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, delivering power systems, sensors, and memory solutions for industrial, automotive, and IoT applications.

CY62167G30-45ZXIT belongs to the MoBL® (Mobile Bitline) SRAM product line, engineered specifically for low-power, high-reliability embedded systems where data integrity and extended battery life are critical design constraints.

FAQ

What is the function of the BYTE pin on CY62167G30-45ZXIT?

The BYTE pin configures memory organization: tied to VCC selects 1M × 16 mode; tied to VSS enables 2M × 8 mode and activates pin 45 as address line A20. In 2M × 8 mode, BHE, BLE, and I/O8–I/O14 are unused and may be left floating. This pin is not an input buffer - it must be hard-strapped during PCB layout.

Does CY62167G30-45ZXIT perform automatic write-back after ECC correction?

No. The device detects and corrects single-bit errors during read cycles and asserts the ERR pin, but does not automatically rewrite corrected data to the memory array. Write-back must be handled externally if persistent correction is required - this avoids unintended writes during transient noise events.

Can CY62167G30-45ZXIT operate at 3.3 V?

No. The device is specified only for 1.65–2.2 V and 4.5–5.5 V supply ranges. Operation at 3.3 V falls outside guaranteed specifications and may result in timing violations, increased standby current, or ECC failure. No characterization data exists for 3.3 V operation.

How is the ERR pin electrically configured and what load can it drive?

ERR is an open-drain output requiring an external pull-up resistor (typically 4.7 kΩ to VCC). It sinks ≤1.6 mA when active and is rated for TTL-compatible voltage levels. It is not latched - it pulses high only during the read cycle in which correction occurs, lasting one access time (45 ns).