Datasheet > CY14B256PA-SFXIT

CY14B256PA-SFXIT

更新时间： 2024-11-24 14:56:11

品牌	Logo	应用领域
英飞凌 - INFINEON		静态存储器
页数	文件大小	规格书
44页	1575K
描述
nvSRAM (non-volatile SRAM)

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中文翻译

获取价格

数据手册

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CY14B256PA-SFXIT 数据手册

CY14C256PA

CY14B256PA

CY14E256PA

256-Kbit (32 K × 8) SPI nvSRAM

with Real Time Clock

256-Kbit (32

K × 8) SPI nvSRAM with Real Time Clock

❐ Sleep mode

Features

■ Write protection

■ 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)

❐ Hardware protection using Write Protect (WP) pin

❐ Software protection using Write Disable instruction

❐ Software block protection for 1/4, 1/2, or entire array

■ Low power consumption

❐ Average active current of 3 mA at 40 MHz operation

❐ Average standby mode current of 250 A

❐ Sleep mode current of 8 A

❐ RECALL to SRAM initiated on power-up (Power-Up

RECALL) or by SPI instruction (Software RECALL)

❐ Automatic STORE on power-down with a small capacitor

■ Industry standard configurations

❐ Operating voltages:

■ High reliability

• CY14C256PA: V_CC= 2.4 V to 2.6 V

• CY14B256PA: V_CC= 2.7 V to 3.6 V

• CY14E256PA: V_CC= 4.5 V to 5.5 V

❐ Industrial temperature

❐ 16-pin small outline integrated circuit (SOIC) package

❐ Restriction of hazardous substances (RoHS) compliant

❐ Infinite read, write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ Data retention: 20 years at 85C

■ Real time clock (RTC)

❐ Full-featured RTC

❐ Watchdog timer

❐ Clock alarm with programmable interrupts

❐ Backup power fail indication

Overview

The Cypress CY14X256PA combines a 256-Kbit nvSRAM^[1]with

a full-featured RTC in a monolithic integrated circuit with serial

SPI interface. The memory is organized as 32 K words of 8 bits

each. The embedded nonvolatile elements incorporate the

QuantumTrap technology, creating the world’s most reliable

nonvolatile memory. The SRAM provides infinite read and write

cycles, while the QuantumTrap cells provide highly reliable

nonvolatile storage of data. Data transfers from SRAM to the

nonvolatile elements (STORE operation) takes place

automatically at power-down. 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.

❐ Square wave output with programmable frequency (1 Hz,

512 Hz, 4096 Hz, 32.768 kHz)

❐ Capacitor or battery backup for RTC

❐ 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

For a complete list of related documentation, click here.

V_RTCcapV_RTCbat

V_CCV_CAP

Logic Block Diagram

Serial Number

8 x 8

Power Control

Block

Manufacturer ID /

Product ID

QuantumTrap

32 K x 8

SLEEP

STORE

RECALL

SRAM

32 K x 8

RDSN/WRSN/RDID

READ/WRITE

Memory

Data &

Address

Control

SPI Control Logic

Write Protection

Instruction decoder

STORE/RECALL/ASENB/ASDISB

SCK

WRSR/RDSR/WREN

RDRTC/WRTC

Status Register

X_in

RTC Control Logic

Registers

INT/SQW

X_out

Counters

Note

1. This device will be referred to as nvSRAM throughout the document.

Cypress Semiconductor Corporation

Document Number: 001-65281 Rev. *J

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised February 1, 2018

12 3 4 5 6 7...44

中文翻译

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与CY14B256PA-SFXIT相关器件

型号	品牌	获取价格	描述	数据表
CY14B256P-SFXI	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) with nvSRAM
CY14B256P-SFXIT	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) with nvSRAM
CY14B256Q	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q1_13	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (SPI) nvSRAM
CY14B256Q1A-SXI	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1A-SXIT	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1-LHXI	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q1-LHXIT	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q2	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM

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