Cypress Semiconductor Electronic Components Datasheet

CY14B512Q Datasheet

512-Kbit (64K x 8) SPI nvSRAM

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CY14C512Q

CY14B512Q

CY14E512Q

512-Kbit (64K × 8) SPI nvSRAM

Features

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

internally organized as 64K × 8

❐ STORE to QuantumTrap nonvolatile elements initiated

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

instruction (Software STORE) or HSB pin (Hardware

STORE)

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

RECALL) or by SPI instruction (Software RECALL)

❐ Support automatic STORE on power-down with a small

capacitor (except for CY14X512Q1A)

■ High reliability

❐ Infinite read, write, and RECALL cycles

❐ 1million STORE cycles to QuantumTrap

❐ Data retention: 20 years at 85 C

■ 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 SPI 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

■ Low power consumption

❐ Average active current of 3 mA at 40 MHz operation

❐ Average standby mode current of 150 A

❐ Sleep mode current of 8 A

■ Industry standard configurations

❐ Operating voltages:

• CY14C512Q: VCC = 2.4 V to 2.6 V

• CY14B512Q: VCC = 2.7 V to 3.6 V

• CY14E512Q: VCC = 4.5 V to 5.5 V

❐ Industrial temperature

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

❐ Restriction of hazardous substances (RoHS) compliant

Functional Description

The Cypress CY14X512Q combines a 512-Kbit nvSRAM[1] with

a nonvolatile element in each memory cell with serial SPI

interface. The memory is organized as 64 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 automati-

cally at power-down (except for CY14X512Q1A). 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

For a complete list of related documentation, click here.

Configuration

Feature

AutoStore

Software

STORE

Hardware

STORE

CY14X512Q1A CY14X512Q2A CY14X512Q3A

No Yes Yes

Yes Yes Yes

No No Yes

Logic Block Diagram

VCC VCAP

Serial Number

8x8

SCK

Power Control

Block

SLEEP

SPI Control Logic

Write Protection

Instruction decoder

Manufacturer ID /

Product ID

RDSN/WRSN/RDID

READ/WRITE

STORE/RECALL/ASENB/ASDISB

Memory

Data &

Address

Control

QuantumTrap

64 K x 8

SRAM

64 K x 8

STORE

RECALL

WRSR/RDSR/WREN

Status Register

Note

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

Cypress Semiconductor Corporation • 198 Champion Court

Document Number: 001-65267 Rev. *I

• San Jose, CA 95134-1709 • 408-943-2600

Revised January 30, 2018

Cypress Semiconductor Electronic Components Datasheet

CY14B512Q Datasheet

512-Kbit (64K x 8) SPI nvSRAM

No Preview Available !

CY14C512Q

CY14B512Q

CY14E512Q

Contents

Pinouts .............................................................................. 3

Pin Definitions .................................................................. 3

Device Operation .............................................................. 4

SRAM Write ................................................................. 4

SRAM Read ................................................................ 4

STORE Operation ....................................................... 4

AutoStore Operation .................................................... 5

Software STORE Operation ........................................ 5

Hardware STORE and HSB pin Operation ................. 5

RECALL Operation ...................................................... 5

Hardware RECALL (Power-Up) .................................. 5

Software RECALL ....................................................... 6

Disabling and Enabling AutoStore ............................... 6

Serial Peripheral Interface ............................................... 6

SPI Overview ............................................................... 6

SPI Modes ................................................................... 7

SPI Operating Features .................................................... 8

Power-Up .................................................................... 8

Power-Down ................................................................ 8

Active Power and Standby Power Modes ................... 8

SPI Functional Description .............................................. 9

Status Register ............................................................... 10

Read Status Register (RDSR) Instruction ................. 10

Fast Read Status Register (FAST_RDSR)

Instruction ......................................................................... 10

Write Status Register (WRSR) Instruction ................ 10

Write Protection and Block Protection ......................... 11

Write Enable (WREN) Instruction .............................. 11

Write Disable (WRDI) Instruction .............................. 12

Block Protection ........................................................ 12

Hardware Write Protection (WP) ............................... 12

Memory Access .............................................................. 13

Read Sequence (READ) Instruction .......................... 13

Fast Read Sequence (FAST_READ) Instruction ...... 13

Write Sequence (WRITE) Instruction ........................ 13

nvSRAM Special Instructions ........................................ 15

Software STORE (STORE) Instruction ..................... 15

Software RECALL (RECALL) Instruction .................. 15

AutoStore Enable (ASENB) Instruction ..................... 15

AutoStore Disable (ASDISB) Instruction ................... 15

Special Instructions ....................................................... 16

SLEEP Instruction ..................................................... 16

Serial Number ................................................................. 16

WRSN (Serial Number Write) Instruction .................. 16

RDSN (Serial Number Read) Instruction ................... 17

FAST_RDSN (Fast Serial Number Read)

Instruction ......................................................................... 17

Device ID ......................................................................... 18

RDID (Device ID Read) Instruction ........................... 18

FAST_RDID (Fast Device ID Read) Instruction ........ 19

HOLD Pin Operation ................................................. 19

Maximum Ratings ........................................................... 20

Operating Range ............................................................. 20

DC Electrical Characteristics ........................................ 20

Data Retention and Endurance ..................................... 21

Capacitance .................................................................... 21

Thermal Resistance ........................................................ 21

AC Test Loads and Waveforms ..................................... 22

AC Test Conditions ........................................................ 22

AC Switching Characteristics ....................................... 23

Switching Waveforms .................................................... 24

AutoStore or Power-Up RECALL .................................. 25

Switching Waveforms .................................................... 26

Software Controlled STORE and RECALL Cycles ...... 27

Switching Waveforms .................................................... 27

Hardware STORE Cycle ................................................. 28

Switching Waveforms .................................................... 28

Ordering Information ...................................................... 29

Ordering Code Definitions ......................................... 29

Package Diagrams .......................................................... 30

Acronyms ........................................................................ 32

Document Conventions ................................................. 32

Units of Measure ....................................................... 32

Document History Page ................................................. 33

Sales, Solutions, and Legal Information ...................... 34

Worldwide Sales and Design Support ....................... 34

Products .................................................................... 34

PSoC® Solutions ...................................................... 34

Cypress Developer Community ................................. 34

Technical Support ..................................................... 34

Document Number: 001-65267 Rev. *I

Page 2 of 34

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CY14B512Q Datasheet

512-Kbit (64K x 8) SPI nvSRAM

CY14B512Q Datasheet

512-Kbit (64K x 8) SPI nvSRAM

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