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CY14C256PA, CY14B256PA, CY14E256PA: 256-Kbit (32 K × 8) SPI nvSRAM with Real Time Clock | 赛普拉斯半导体

CY14C256PA, CY14B256PA, CY14E256PA: 256-Kbit (32 K × 8) SPI nvSRAM with Real Time Clock

2020 年 11 月 03 日


  • 256-Kbit nonvolatile static random access memory (nvSRAM)
    • Internally organized as 32 K × 8
    • STORE to QuantumTrap nonvolatile elements initiated automatically on power-down (AutoStore) or by using SPI instruction (Software STORE) or HSB pin (Hardware STORE)
    • 在通电时启动(通电 RECALL)或者由 SPI 指令(软件 RECALL)启动数据恢复至 SRAM
    • 通过小型电容在断电时自动存储数据
  • 高可靠性
    • 无限的读、写和数据恢复循环
    • 1 百万次存储至量子井的循环
    • 数据保留时间:20 years at 85 °C
  • Real time clock (RTC)
    • Full-featured RTC
    • 看门狗定时器
    • 带可编程中断的时钟警报
    • Backup power fail indication
    • Square wave output with programmable frequency (1 Hz, 512 Hz, 4096 Hz, 32.768 kHz)
    • RTC 备用电容或电池
    • Backup current of 0.45 μA (typical)
  • 40 MHz and 104 MHz High-speed serial peripheral interface (SPI)
    • 40 MHz clock rate SPI write and read with zero cycle delay
    • 104 MHz clock rate SPI write and read (with special fast read instructions)
    • Supports SPI mode 0 (0,0) and mode 3 (1,1)
  • SPI access to special functions
    • Nonvolatile STORE/RECALL
    • 8-byte serial number
    • Manufacturer ID and Product ID
    • Sleep mode
  • Write protection
    • Hardware protection using Write Protect (WP) pin
    • Software protection using Write Disable instruction
    • Software block protection for 1/4, 1/2, or entire array
  • 低功耗
    • Average active current of 3 mA at 40 MHz operation
    • Average standby mode current of 250 μA
    • Sleep mode current of 8 μA
  • Industry standard configurations
    • Operating voltages:
      • CY14C256PA: VCC = 2.4 V to 2.6 V
      • CY14B256PA: VCC = 2.7 V to 3.6 V
      • CY14E256PA: VCC = 4.5 V to 5.5 V
    • 工业温度
    • 16-pin small outline integrated circuit (SOIC) package
    • Restriction of hazardous substances (RoHS) compliant


The Cypress CY14X256PA combines a 256-Kbit nvSRAM with a full-featured RTC in a monolithic integrated circuit with serial SPI interface. 该存储器采用“32 K 字,每字 32 位”的组织方式。嵌入式非易失性组件通过采用量子井技术,打造出世界上最可靠的非易失性存储器。SRAM 能够实现无限次读写循环,而量子井单元则能够提供高度可靠的非易失性数据存储空间。断电时,数据会从 SRAM 自动转移到非易失性元件中(“存储”操作)。On power-up, data is restored to the SRAM from the nonvolatile memory (RECALL operation). You can also initiate the STORE and RECALL operations through SPI instruction.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

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