Datasheet > CY14B256P_1106

CY14B256P_1106

更新时间： 2024-02-07 09:14:27

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		静态存储器时钟
页数	文件大小	规格书
36页	1358K
描述
256-Kbit (32 K x 8) Serial (SPI) nvSRAM with Real Time Clock

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中文翻译

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CY14B256P_1106 数据手册

CY14B256P

256-Kbit (32 K × 8) Serial (SPI) nvSRAM

with Real Time Clock

256-Kbit (32

K × 8) Serial (SPI) nvSRAM with Real Time Clock

■ Write protection

❐ Hardware protection using Write Protect (WP) pin

Features

■ 256-Kbit nonvolatile static random access memory (nvSRAM)

❐ Internally organized as 32 K × 8

❐ Software protection using Write Disable instruction

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

❐ STORE to QuantumTrap nonvolatile elements initiated

automatically on power-down (AutoStore) or by user using

HSB pin (Hardware STORE) or SPI instruction (Software

STORE)

■ Low power consumption

❐ Single 3 V +20%, –10% operation

❐ Average active current of 10 mA at 40 MHz operation

■ Industry standard configurations

❐ Industrial temperature

❐ 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

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

❐ Restriction of hazardous substances (RoHS) compliant

■ High reliability

Overview

❐ Infinite read, write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ Data retention: 20 years

The Cypress CY14B256P combines a 256-Kbit nvSRAM^[1]with

a full-featured real time clock 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).

The STORE and RECALL operations can also be initiated by the

user through SPI instruction.

■ Real time clock (RTC)

❐ Full-featured RTC

❐ Watchdog timer

❐ Clock alarm with programmable interrupts

❐ Capacitor or battery backup for RTC

❐ Backup current of 0.35 µA (typical)

■ High-speed serial peripheral interface (SPI)

❐ 40-MHz clock rate – SRAM memory access

❐ 25-MHz clock rate – RTC memory access

❐ Supports SPI mode 0 (0,0) and mode 3 (1,1)

Logic Block Diagram

V_CC

V_CAP

QuantumTrap

32 K X 8

Power Control

SCK

Instruction decode

Write protect

Control logic

STORE/RECALL

Control

STORE

HSB

SRAM Array

HOLD

RECALL

32 K X 8

Instruction

D0-D7

A0-A14

out

Address

Decoder

RTC

INT

MUX

Data I/O register

Status Register

Note

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

Cypress Semiconductor Corporation

Document Number: 001-53881 Rev. *F

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised July 19, 2011

12 3 4 5 6 7...36

中文翻译

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与CY14B256P_1106相关器件

型号	品牌	获取价格	描述	数据表
CY14B256P_13	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (SPI) nvSRAM with Real Time Clock
CY14B256PA	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM with Real Time Clock Infinite read, write, and RECALL cycle
CY14B256PA-SFXI	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM with Real Time Clock Infinite read, write, and RECALL cycle
CY14B256PA-SFXI	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
CY14B256PA-SFXIT	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM with Real Time Clock Infinite read, write, and RECALL cycle
CY14B256PA-SFXIT	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
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

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