CY15B004Q 4-Kbit (512 8) Serial (SPI) Automotive-A F-RAM 4-Kbit (512 8) Serial (SPI) Automotive-A F-RAM Features Functional Description 4-Kbit ferroelectric random access memory (F-RAM) logically The CY15B004Q is a 4-Kbit nonvolatile memory employing an organized as 512 8 advanced ferroelectric process. A ferroelectric random access 14 High-endurance 100 trillion (10 ) read/writes memory or F-RAM is nonvolatile and performs reads and writes similar to a RAM. It provides reliable data retention for 151 years 151-year data retention (See the Data Retention and Endurance table) while eliminating the complexities, overhead, and system level reliability problems caused by serial flash, EEPROM, and other NoDelay writes nonvolatile memories. Advanced high-reliability ferroelectric process Very fast serial peripheral interface (SPI) Unlike serial flash and EEPROM, the CY15B004Q performs write operations at bus speed. No write delays are incurred. Data Up to 20 MHz frequency is written to the memory array immediately after each byte is Direct hardware replacement for serial flash and EEPROM successfully transferred to the device. The next bus cycle can Supports SPI mode 0 (0, 0) and mode 3 (1, 1) commence without the need for data polling. In addition, the Sophisticated write protection scheme product offers substantial write endurance compared with other Hardware protection using the Write Protect (WP) pin nonvolatile memories. The CY15B004Q is capable of supporting 14 Software protection using Write Disable instruction 10 read/write cycles, or 100 million times more write cycles Software block protection for 1/4, 1/2, or entire array than EEPROM. These capabilities make the CY15B004Q ideal for nonvolatile Low power consumption memory applications requiring frequent or rapid writes. 200 A active current at 1 MHz Examples range from data collection, where the number of write 3 A (typ) standby current cycles may be critical, to demanding industrial controls where the Low-voltage operation: V = 2.7 V to 3.6 V DD long write time of serial flash or EEPROM can cause data loss. Automotive-A temperature: 40 C to +85 C The CY15B004Q provides substantial benefits to users of serial EEPROM or flash as a hardware drop-in replacement. The 8-pin small outline integrated circuit (SOIC) package CY15B004Q uses the high-speed SPI bus, which enhances the Restriction of hazardous substances (RoHS) compliant high-speed write capability of F-RAM technology. The device specifications are guaranteed over an automotive-a temperature range of 40 C to +85 C. Logic Block Diagram WP Instruction Decoder CS Clock Generator Control Logic HOLD Write Protect SCK 512 x 8 F-RAM Array Instruction Register 9 8 Address Register Counter SI SO Data OI/ Register 2 Nonvolatile Status Register Errata: The Write Enable Latch (WEL) bit in the Status Register of CY15B004Q part doesnt clear after executing the memory write (WRITE) operation at memory location(s) from 0x100 to 0x1FF. For more information, see Errata on page 19. Details include errata trigger conditions, scope of impact, available workarounds, and silicon revision applicability. Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-10181 Rev. *B Revised May 10, 2017CY15B004Q Contents Pinout ................................................................................ 3 Thermal Resistance........................................................ 12 Pin Definitions .................................................................. 3 AC Test Conditions ........................................................ 12 Functional Overview ........................................................ 4 AC Switching Characteristics ....................................... 13 Memory Architecture........................................................ 4 Power Cycle Timing ....................................................... 15 Serial Peripheral Interface SPI Bus.............................. 4 Ordering Information...................................................... 16 SPI Overview............................................................... 4 Ordering Code Definitions......................................... 16 SPI Modes................................................................... 5 Package Diagram............................................................ 17 Power Up to First Access............................................ 6 Acronyms........................................................................ 18 Command Structure .................................................... 6 Document Conventions ................................................. 18 WREN - Set Write Enable Latch ................................. 6 Units of Measure ....................................................... 18 WRDI - Reset Write Enable Latch............................... 6 Errata ............................................................................... 19 Status Register and Write Protection ............................. 6 Part Numbers Affected.............................................. 19 RDSR - Read Status Register..................................... 7 Qualification Status ................................................... 19 WRSR - Write Status Register .................................... 7 Errata Summary ........................................................ 19 Memory Operation............................................................ 8 Document History Page................................................. 21 Write Operation ........................................................... 8 Sales, Solutions, and Legal Information ...................... 22 Read Operation ........................................................... 8 Worldwide Sales and Design Support....................... 22 HOLD Pin Operation ................................................... 9 Products .................................................................... 22 Endurance ................................................................. 10 PSoC Solutions ...................................................... 22 Maximum Ratings........................................................... 11 Cypress Developer Community................................. 22 Operating Range............................................................. 11 Technical Support ..................................................... 22 DC Electrical Characteristics ........................................ 11 .................................................................................. 22 Data Retention and Endurance ..................................... 12 Capacitance .................................................................... 12 Document Number: 002-10181 Rev. *B Page 2 of 22