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CY15B204QN-40SXE
  • CY15B204QN-40SXE

CY15B204QN-40SXE

Active and preferred

The CY15B204QN-40SXE is a 4-Mb EXCELON™ Auto Ferroelectric RAM (F-RAM) with a 512K × 8 SPI interface, automotive Grade 1 qualification, and -40°C to +125°C operating range. It supports a 1.8 V to 3.6 V supply, up to 40 MHz clock, and offers 10¹³ endurance cycles with 121-year data retention at 85°C. Instant non-volatile writes, advanced write protection, device and unique IDs, and ultra-low standby current make it ideal for automotive and industrial data logging applications.

Infineon Technologies CY15B204QN-40SXE Product Info

16 April 2026 1

Parameters

Density

4 MBit

Family

Excelon™

Frequency

40 MHz

Interfaces

SPI

Operating Temperature range

-40 °C to 125 °C

Operating Voltage range

1.8 V to 3.6 V

Organization (X x Y)

512Kb x 8

Planned to be available until at least

2033

Qualification

Automotive(E)

Apps

Solid-state circuit breaker (SSCB), Industrial automation

Features

  • 4-Mb F-RAM, 512K × 8 organization
  • 1013 read/write cycle endurance
  • 121-year data retention at 85°C
  • Instant non-volatile write technology
  • Up to 40 MHz SPI interface
  • Supports SPI Modes 0 and 3
  • Hardware and software write protection
  • Dedicated 256-byte special sector
  • Unique device ID and serial number
  • Low power: 3.9 mA active, 0.1 µA hibernate
  • Deep power-down and hibernate modes
  • Input/output capacitance: 6/8 pF

Description

  • Reliable storage for frequent data logging
  • Eliminates data loss from power failures
  • Enables instant write, no wait time
  • High-speed SPI simplifies integration
  • Flexible use with multiple SPI modes
  • Protects data from accidental writes
  • Special sector survives soldering cycles
  • Easy device tracking and authentication
  • Minimizes energy use in standby
  • Extends battery life in low-power modes
  • Reduces EMI with low pin capacitance
  • Drop-in replacement for serial EEPROM/flash

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