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CY14B256I-SFXI
  • CY14B256I-SFXI

CY14B256I-SFXI

Active and preferred

CY14B256I-SFXI is a 256-Kbit (32 K × 8) serial I2C nvSRAM with integrated real-time clock. It runs from 2.7 V to 3.6 V over −40°C to +85°C and supports I2C speeds up to 3.4 MHz with zero-cycle read/write. AutoStore copies SRAM to QuantumTrap nonvolatile cells on power-down and recalls on power-up; STORE/RECALL can also be commanded. Data retention is 20 years at 85°C in a 16-pin SOIC.

Infineon Technologies CY14B256I-SFXI Product Info

16 April 2026 0

Parameters

Alarms

Y

Density

256 kBit

Frequency

3.4 MHz

Interfaces

I2C

Lead Ball Finish

Pure Sn

Operating Temperature range

-40 °C to 85 °C

Operating Voltage range

2.7 V to 3.6 V

Operating Voltage (VCCQ) max

3.6 V

Organization (X x Y)

32Kb x 8

Peak Reflow Temp

260 °C

Qualification

Industrial

Real Time Clock

Y

Speed

0 ns

Watchdog Timer

Y

Features

  • 256-Kbit nvSRAM (32 K × 8)
  • AutoStore on power-down
  • Software STORE/RECALL via I2C
  • Hardware STORE via HSB pin
  • Power-up RECALL restores SRAM
  • I2C up to 3.4 MHz (Hs-mode)
  • 1 mA avg at 3.4 MHz
  • 250 µA standby current max
  • 8 µA sleep mode current max
  • 20-year retention at 85°C
  • 1M STORE cycles to QuantumTrap
  • RTC: alarm, WDT, SQW 1 Hz-32 kHz

Description

  • SRAM speed with nonvolatile data
  • Saves data automatically on power loss
  • Firmware can force NV save/restore
  • Pin-triggered save for fast response
  • Instant restore after power returns
  • Fast I2C fits high-throughput buses
  • Low active current cuts power budget
  • Low standby current extends uptime
  • Sleep current supports battery designs
  • Long retention protects stored data
  • High endurance reduces wear concerns
  • RTC functions cut external components

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