CY14B101Q1-SFXIT Ver la hoja de datos (PDF) - Cypress Semiconductor

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CY14B101Q1-SFXIT

1-Mbit (128 K × 8) Serial SPI nvSRAM

Cypress Semiconductor 

CY14B101Q1

CY14B101Q2

CY14B101Q3

Contents

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

Pin Definitions .................................................................. 4

Device Operation .............................................................. 5

SRAM Write ................................................................. 5

SRAM Read ................................................................ 5

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

AutoStore Operation .................................................... 6

Software STORE Operation ........................................ 6

Hardware STORE and HSB Pin Operation ................. 6

Hardware RECALL (Power-Up) .................................. 6

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

Disabling and Enabling AutoStore ............................... 7

Serial Peripheral Interface ............................................... 7

SPI Overview ............................................................... 7

SPI Modes ................................................................... 8

SPI Operating Features .................................................... 9

Power-Up .................................................................... 9

Power-On Reset .......................................................... 9

Power-Down ................................................................ 9

Active Power and Standby Power Modes ................... 9

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

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

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

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

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

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

Write Disable (WRDI) Instruction .............................. 11

Block Protection ........................................................ 11

Write Protect (WP) Pin .............................................. 12

Memory Access .............................................................. 12

Read Sequence (READ) instruction .......................... 12

Write Sequence (WRITE) instruction ........................ 12

Software STORE (STORE) instruction ...................... 13

Software RECALL (RECALL) instruction .................. 14

AutoStore Enable (ASENB) instruction ..................... 14

AutoStore Disable (ASDISB) instruction ................... 14

HOLD Pin Operation ................................................. 14

Maximum Ratings ........................................................... 15

Operating Range ............................................................. 15

DC Electrical Characteristics ........................................ 15

Data Retention and Endurance ..................................... 16

Capacitance .................................................................... 16

Thermal Resistance ........................................................ 16

AC Test Loads and Waveforms ..................................... 16

AC Test Conditions ........................................................ 16

AC Switching Characteristics ....................................... 17

Switching Waveforms .................................................... 17

AutoStore or Power-Up RECALL .................................. 18

Software Controlled STORE and RECALL Cycles ...... 19

Switching Waveforms .................................................... 19

Hardware STORE Cycle ................................................. 20

Switching Waveforms .................................................... 20

Ordering Information ...................................................... 21

Ordering Code Definitions ......................................... 21

Package Diagrams .......................................................... 22

Acronyms ........................................................................ 24

Document Conventions ................................................. 24

Units of Measure ....................................................... 24

Document History Page ................................................. 25

Sales, Solutions, and Legal Information ...................... 27

Worldwide Sales and Design Support ....................... 27

Products .................................................................... 27

PSoC Solutions ......................................................... 27

Document Number: 001-50091 Rev. *L

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