CY14B101Q1A 데이터 시트보기 (PDF) - Cypress Semiconductor

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CY14B101Q1A

1-Mbit (128 K × 8) Serial (SPI) nvSRAM

Cypress Semiconductor 

CY14C101Q

CY14B101Q, CY14E101Q

Contents

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

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

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

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

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

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

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

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

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

RECALL Operation ...................................................... 6

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

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 On Reset .......................................................... 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 ......................... 12

Write Enable (WREN) Instruction .............................. 12

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

Best Practices ................................................................. 20

Maximum Ratings ........................................................... 21

DC Electrical Characteristics ........................................ 21

Data Retention and Endurance ..................................... 22

Capacitance .................................................................... 22

Thermal Resistance ........................................................ 22

AC Test Conditions ........................................................ 23

AC Switching Characteristics ....................................... 24

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

Software Controlled STORE and RECALL Cycles ...... 26

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

Hardware STORE Cycle ................................................. 27

Ordering Information ...................................................... 28

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

Document #: 001-54393 Rev. *F

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