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Cypress Semiconductor Electronic Components Datasheet

FM25C160B Datasheet

16-Kbit (2K x 8) Serial (SPI) Automotive F-RAM

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FM25C160B
16-Kbit (2K × 8) Serial (SPI) F-RAM
16-Kbit (2K × 8) Serial (SPI) F-RAM
Features
16-Kbit ferroelectric random access memory (F-RAM) logically
organized as 2K × 8
High-endurance 100 trillion (1014) read/writes
151-year data retention (See Data Retention and Endurance
on page 12)
NoDelay™ writes
Advanced high-reliability ferroelectric process
Very fast serial peripheral interface (SPI)
Up to 20 MHz frequency
Direct hardware replacement for serial flash and EEPROM
Supports SPI mode 0 (0, 0) and mode 3 (1, 1)
Sophisticated write protection scheme
Hardware protection using the Write Protect (WP) pin
Software protection using Write Disable instruction
Software block protection for 1/4, 1/2, or entire array
Low power consumption
250 A active current at 1 MHz
4 A (typ) standby current
Voltage operation: VDD = 4.5 V to 5.5 V
Industrial temperature: –40 C to +85 C
8-pin small outline integrated circuit (SOIC) package
Restriction of hazardous substances (RoHS) compliant
Functional Description
The FM25C160B is a 16-Kbit nonvolatile memory employing an
advanced ferroelectric process. A ferroelectric random access
memory or F-RAM is nonvolatile and performs reads and writes
similar to a RAM. It provides reliable data retention for 151 years
while eliminating the complexities, overhead, and system level
reliability problems caused by serial flash, EEPROM, and other
nonvolatile memories.
Unlike serial flash and EEPROM, the FM25C160B performs
write operations at bus speed. No write delays are incurred. Data
is written to the memory array immediately after each byte is
successfully transferred to the device. The next bus cycle can
commence without the need for data polling. In addition, the
product offers substantial write endurance compared with other
nonvolatile memories. The FM25C160B is capable of supporting
1014 read/write cycles, or 100 million times more write cycles
than EEPROM.
These capabilities make the FM25C160B ideal for nonvolatile
memory applications requiring frequent or rapid writes.
Examples range from data collection, where the number of write
cycles may be critical, to demanding industrial controls where the
long write time of serial flash or EEPROM can cause data loss.
The FM25C160B provides substantial benefits to users of serial
EEPROM or flash as a hardware drop-in replacement. The
FM25C160B uses the high-speed SPI bus, which enhances the
high-speed write capability of F-RAM technology. The device
specifications are guaranteed over an industrial temperature
range of –40 C to +85 C.
For a complete list of related documentation, click here.
Logic Block Diagram
WP
CS
HOLD
SCK
Instruction Decoder
Clock Generator
Control Logic
Write Protect
2Kx8
F-RAM Array
Instruction Register
Address Register
Counter
11
8
SI SO
Data I/O Register
3
Nonvolatile Status
Register
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-84472 Rev. *I
• San Jose, CA 95134-1709 • 408-943-2600
Revised November 12, 2018


Cypress Semiconductor Electronic Components Datasheet

FM25C160B Datasheet

16-Kbit (2K x 8) Serial (SPI) Automotive F-RAM

No Preview Available !

FM25C160B
Contents
Pinout ................................................................................ 3
Pin Definitions .................................................................. 3
Functional Overview ........................................................ 4
Memory Architecture ........................................................ 4
Serial Peripheral Interface – SPI Bus .............................. 4
SPI Overview ............................................................... 4
SPI Modes ................................................................... 5
Power Up to First Access ............................................ 6
Command Structure .................................................... 6
WREN - Set Write Enable Latch ................................. 6
WRDI - Reset Write Enable Latch ............................... 6
Status Register and Write Protection ............................. 6
RDSR - Read Status Register ..................................... 7
WRSR - Write Status Register .................................... 7
Memory Operation ............................................................ 8
Write Operation ........................................................... 8
Read Operation ........................................................... 8
HOLD Pin Operation ................................................... 9
Endurance ................................................................. 10
Maximum Ratings ........................................................... 11
Operating Range ............................................................. 11
DC Electrical Characteristics ........................................ 11
Data Retention and Endurance ..................................... 12
Capacitance .................................................................... 12
Thermal Resistance ........................................................ 12
AC Test Conditions ........................................................ 12
AC Switching Characteristics ....................................... 13
Power Cycle Timing ....................................................... 15
Ordering Information ...................................................... 16
Ordering Code Definitions ......................................... 16
Package Diagram ............................................................ 17
Acronyms ........................................................................ 18
Document Conventions ................................................. 18
Units of Measure ....................................................... 18
Document History Page ................................................. 19
Sales, Solutions, and Legal Information ...................... 21
Worldwide Sales and Design Support ....................... 21
Products .................................................................... 21
PSoC® Solutions ...................................................... 21
Cypress Developer Community ................................. 21
Technical Support ..................................................... 21
Document Number: 001-84472 Rev. *I
Page 2 of 21


Part Number FM25C160B
Description 16-Kbit (2K x 8) Serial (SPI) Automotive F-RAM
Maker Cypress Semiconductor
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FM25C160B Datasheet PDF






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