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Cypress Semiconductor Electronic Components Datasheet

CY14ME064Q Datasheet

64-Kbit (8 K x 8) SPI nvSRAM

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CY14MB064Q
CY14ME064Q
64-Kbit (8K × 8) SPI nvSRAM
64-Kbit (8K × 8) SPI nvSRAM
Features
64-Kbit nonvolatile static random access memory (nvSRAM)
internally organized as 8K × 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 CY14MX064Q1A)
High reliability
Infinite read, write, and RECALL cycles
1million STORE cycles to QuantumTrap
Data retention: 20 years at 85 C
High speed serial peripheral interface (SPI)
40-MHz clock rate SPI write and read with zero cycle delay
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:
• CY14MB064Q: VCC = 2.7 V to 3.6 V
• CY14ME064Q: 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 CY14MX064Q combines a 64 Kbit nvSRAM with a
nonvolatile element in each memory cell with serial SPI interface.
The memory is organized as 8K 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 (except for CY14MX064Q1A). 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 CY14MX064Q1A CY14MX064Q2A CY14MX064Q3A
AutoStore
No
Yes
Yes
Software
Yes
Yes
Yes
STORE
Hardware
No
No
Yes
STORE
Logic Block Diagram
VCC VCAP
SI
CS
SCK
WP
SO
Power Control
Block
SLEEP
SPI Control Logic
Write Protection
Instruction decoder
Serial Number
8x8
Manufacturer ID /
Product ID
RDSN/WRSN/RDID
READ/WRITE
STORE/RECALL/ASENB/ASDISB
Memory
Data &
Address
Control
QuantumTrap
8Kx8
SRAM
8Kx8
STORE
RECALL
WRSR/RDSR/WREN
Status Register
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-65018 Rev. *H
• San Jose, CA 95134-1709 • 408-943-2600
Revised February 16, 2016


Cypress Semiconductor Electronic Components Datasheet

CY14ME064Q Datasheet

64-Kbit (8 K x 8) SPI nvSRAM

No Preview Available !

CY14MB064Q
CY14ME064Q
Contents
Pinouts .............................................................................. 3
Pin Definitions .................................................................. 3
Device Operation .............................................................. 4
SRAM Write ................................................................. 4
SRAM Read ................................................................ 4
STORE Operation ....................................................... 4
AutoStore Operation .................................................... 4
Software STORE Operation ........................................ 5
Hardware STORE and HSB pin Operation ................. 5
RECALL Operation ...................................................... 5
Hardware RECALL (Power-Up) .................................. 5
Software RECALL ....................................................... 5
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
Write Status Register (WRSR) Instruction ................ 10
Write Protection and Block Protection ......................... 11
Write Enable (WREN) Instruction .............................. 11
Write Disable (WRDI) Instruction .............................. 11
Block Protection ........................................................ 12
Hardware Write Protection (WP) ............................... 12
Memory Access .............................................................. 12
Read Sequence (READ) Instruction .......................... 12
Write Sequence (WRITE) Instruction ........................ 12
nvSRAM Special Instructions ........................................ 14
Software STORE (STORE) Instruction ..................... 14
Software RECALL (RECALL) Instruction .................. 14
AutoStore Enable (ASENB) Instruction ..................... 14
AutoStore Disable (ASDISB) Instruction ................... 15
Special Instructions ....................................................... 15
SLEEP Instruction ..................................................... 15
Serial Number ................................................................. 15
WRSN (Serial Number Write) Instruction .................. 15
RDSN (Serial Number Read) Instruction ................... 16
Device ID ......................................................................... 16
RDID (Device ID Read) Instruction ........................... 16
HOLD Pin Operation ................................................. 17
Maximum Ratings ........................................................... 18
Operating Range ............................................................. 18
DC Electrical Characteristics ........................................ 18
Data Retention and Endurance ..................................... 19
Capacitance .................................................................... 19
Thermal Resistance ........................................................ 19
AC Test Loads and Waveforms ..................................... 20
AC Test Conditions ........................................................ 20
AC Switching Characteristics ....................................... 21
Switching Waveforms .................................................... 22
AutoStore or Power-Up RECALL .................................. 23
Switching Waveforms .................................................... 24
Software Controlled STORE and RECALL Cycles ...... 25
Switching Waveforms .................................................... 25
Hardware STORE Cycle ................................................. 26
Switching Waveforms .................................................... 26
Ordering Information ...................................................... 27
Ordering Code Definitions ......................................... 27
Package Diagrams .......................................................... 28
Acronyms ........................................................................ 30
Document Conventions ................................................. 30
Units of Measure ....................................................... 30
Document History Page ................................................. 31
Sales, Solutions, and Legal Information ...................... 32
Worldwide Sales and Design Support ....................... 32
Products .................................................................... 32
PSoC® Solutions ...................................................... 32
Cypress Developer Community ................................. 32
Technical Support ..................................................... 32
Document Number: 001-65018 Rev. *H
Page 2 of 32


Part Number CY14ME064Q
Description 64-Kbit (8 K x 8) SPI nvSRAM
Maker Cypress
Total Page 30 Pages
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