FUJITSU SEMICONDUCTOR DATA SHEET DS501-00015-4v0-E Memory FRAM 64 K (8 K 8) Bit SPI MB85RS64V DESCRIPTION MB85RS64V is a FRAM (Ferroelectric Random Access Memory) chip in a configuration of 8,192 words 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming the nonvolatile memory cells. MB85RS64V adopts the Serial Peripheral Interface (SPI). The MB85RS64V is able to retain data without using a back-up battery, as is needed for SRAM.
MB85RS64V PIN ASSIGNMENT (TOP VIEW) CS 1 8 VDD SO 2 7 HOLD WP 3 6 SCK GND 4 5 SI (FPT-8P-M02) PIN FUNCTIONAL DESCRIPTIONS Pin No. Pin Name 1 3 2 Functional description CS Chip Select pin This is an input pin to make chip select. When CS is the “H” level, device is in deselect (standby) status and SO becomes High-Z. Inputs from other pins are ignored at this time. When CS is the “L” level, device is in select (active) status. CS has to be the “L” level before inputting op-code.
MB85RS64V BLOCK DIAGRAM Control Circuit SCK HOLD Row Decoder CS Address Counter Serial-Parallel Converter SI FRAM Cell Array 8,192 8 FRAM Status Register Column Decoder/Sense Amp/ Write Amp WP Data Register SO Parallel-Serial Converter DS501-00015-4v0-E 3
MB85RS64V SPI MODE MB85RS64V corresponds to the SPI mode 0 (CPOL 0, CPHA 0) , and SPI mode 3 (CPOL 1, CPHA 1) .
MB85RS64V SERIAL PERIPHERAL INTERFACE (SPI) MB85RS64V works as a slave of SPI. More than 2 devices can be connected by using microcontroller equipped with SPI port. By using a microcontroller not equipped with SPI port, SI and SO can be bus connected to use.
MB85RS64V STATUS REGISTER Bit No. 7 Bit Name Function WPEN Status Register Write Protect This is a bit composed of nonvolatile memories (FRAM). WPEN protects writing to a status register (see “ WRITING PROTECT”) relating with WP input. Writing with the WRSR command and reading with the RDSR command are possible. Not Used Bits These are bits composed of nonvolatile memories, writing with the WRSR command is possible. These bits are not used but they are read with the RDSR command.
MB85RS64V COMMAND WREN The WREN command sets WEL (Write Enable Latch) . WEL shall be set with the WREN command before writing operation (WRSR command and WRITE command) . CS 0 1 2 3 4 5 6 7 SCK SI Invalid 0 0 0 0 0 1 1 Invalid 0 High-Z SO WRDI The WRDI command resets WEL (Write Enable Latch) . Writing operation (WRITE command and WRSR command) are not performed when WEL is reset.
MB85RS64V RDSR The RDSR command reads status register data. After op-code of RDSR is input to SI, 8-cycle clock is input to SCK. The SI value is invalid during this time. SO is output synchronously to a falling edge of SCK. In the RDSR command, repeated reading of status register is enabled by sending SCK continuously before rising of CS.
MB85RS64V READ The READ command reads FRAM memory cell array data. Arbitrary 16 bits address and op-code of READ are input to SI. The 3-bit upper address bit is invalid. Then, 8-cycle clock is input to SCK. SO is output synchronously to the falling edge of SCK. While reading, the SI value is invalid. When CS is risen, the READ command is completed, but keeps on reading with automatic address increment which is enabled by continuously sending clocks to SCK in unit of 8 cycles before CS rising.
MB85RS64V RDID The RDID command reads fixed Device ID. After performing RDID op-code to SI, 32-cycle clock is input to SCK. The SI value is invalid during this time. SO is output synchronously to a falling edge of SCK. The output is in order of Manufacturer ID (8bit)/Continuation code (8bit)/Product ID (1st Byte)/ Product ID (2nd Byte). In the RDID command, SO holds the output state of the last bit in 32-bit Device ID until CS is risen.
MB85RS64V BLOCK PROTECT Writing protect block for WRITE command is configured by the value of BP0 and BP1 in the status register. BP1 BP0 Protected Block 0 0 None 0 1 1800H to 1FFFH (upper 1/4) 1 0 1000H to 1FFFH (upper 1/2) 1 1 0000H to 1FFFH (all) WRITING PROTECT Writing operation of the WRITE command and the WRSR command are protected with the value of WEL, WPEN, WP as shown in the table.
MB85RS64V ABSOLUTE MAXIMUM RATINGS Parameter Rating Symbol Min Unit Max Power supply voltage* VDD 0.5 Input voltage* VIN 0.5 VDD 0.5 ( 6.0) V VOUT 0.5 VDD 0.5 ( 6.0) V TA 40 85 C Tstg 55 125 C Output voltage* Operation ambient temperature Storage temperature 6.0 V *:These parameters are based on the condition that VSS is 0 V. WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.
MB85RS64V ELECTRICAL CHARACTERISTICS 1. DC Characteristics (within recommended operating conditions) Parameter Symbol 0 Input leakage current |ILI| Min Typ CS < VDD CS Max Unit 200 VDD 10 A WP, HOLD, SCK, SI 0 V to VDD 10 10 A 1.5 2.5 mA 10 20 A VDD V 0.
MB85RS64V 2.
MB85RS64V AC Load Equivalent Circuit 5.5 V Output 30 pF 3.
MB85RS64V TIMING DIAGRAM Serial Data Timing tD CS tCSH tCSU tCH SCK tSU tCL tCH tH Valid in SI tODV SO tOH tOD High-Z High-Z : H or L Hold Timing CS SCK tHS tHS tHH tHS tHH tHS tHH tHH HOLD High-Z SO tHZ 16 tLZ High-Z tHZ tLZ DS501-00015-4v0-E
MB85RS64V POWER ON/OFF SEQUENCE tpd tf tr tpu VDD VDD 3.0 V 3.0 V VIH (Min) VIH (Min) 1.2 V 1.2 V VIL (Max) VIL (Max) GND GND CS >VDD × 0.8 * CS * : CS (Max) < VDD CS >VDD × 0.8 * CS : don't care CS 0.3 V Parameter Symbol CS level hold time at power OFF tpd CS level hold time at power ON tpu Power supply falling time tf Power supply rising time tr Value Min 400 0.1 0.6 200 100 1 Max Unit Condition ns ms VDD 5.0V 0.5V Operation VDD 3.3V 0.3V Operation VDD 5.0V 0.
MB85RS64V NOTE ON USE We recommend programming of the device after reflow. Data written before reflow cannot be guaranteed.
MB85RS64V • C-V method of Latch-Up Resistance Test Protection Resistor A 1 Test 2 terminal SW + VIN V - C 200pF VDD DUT VDD (Max.Rating) VSS Reference terminal Note : Charge voltage alternately switching 1 and 2 approximately 2 sec interval. This switching process is considered as one cycle. Repeat this process 5 times. However, if the latch-up condition occurs before completing 5 times, this test must be stopped immediately.
MB85RS64V ORDERING INFORMATION Part number Package Shipping form MB85RS64VPNF-G-JNE1 8-pin plastic SOP (FPT-8P-M02) Tube MB85RS64VPNF-G-JNERE1 8-pin plastic SOP (FPT-8P-M02) Embossed Carrier tape Minimum shipping quantity * 1500 *: Please contact our sales office about minimum shipping quantity.
MB85RS64V PACKAGE DIMENSION 8-pin plastic SOP Lead pitch 1.27 mm Package width package length 3.9 mm 5.05 mm Lead shape Gullwing Sealing method Plastic mold Mounting height 1.75 mm MAX Weight 0.06 g (FPT-8P-M02) 8-pin plastic SOP (FPT-8P-M02) +0.25 Note 1) *1 : These dimensions include resin protrusion. Note 2) *2 : These dimensions do not include resin protrusion. Note 3) Pins width and pins thickness include plating thickness. Note 4) Pins width do not include tie bar cutting remainder.
MB85RS64V MARKING [MB85RS64VPNF-G-JNE1] [MB85RS64VPNF-G-JNERE1] RS64V E11200 [FPT-8P-M02] 22 DS501-00015-4v0-E
MB85RS64V PACKING INFORMATION 1. Tube 1.1 Tube Dimensions • Tube/stopper shape Tube Transparent polyethylene terephthalate (treated to antistatic) Stopper (treated to antistatic) Tube length: 520 mm Tube cross-sections and Maximum quantity Maximum quantity Package form Package code FPT-8P-M02 SOP, 8, plastic (2) pcs/ tube pcs/inner box pcs/outer box 95 7600 30400 1.8 2.6 7.4 6.4 4.
MB85RS64V 1.2 Tube Dry pack packing specifications IC Tube Stopper For SOP Index mark Label I *1*3 Aluminum Iaminated bag Heat seal Dry pack Desiccant Humidity indicator Aluminum Iaminated bag (tubes inside) Inner box Cushioning material Inner box Label I *1*3 Cushioning material Outer box*2 Outer box Use adhesive tapes. Label II-A *3 Label II-B *3 *1: For a product of witch part number is suffixed with “E1”, a “ G bag and the inner boxes.
MB85RS64V 1.
MB85RS64V 1.
MB85RS64V 2. Emboss Tape 2.1 Tape Dimensions PKG code FPT-8P-M02 Reel No 3 Maximum storage capacity pcs/reel pcs/inner box pcs/outer box 1500 1500 10500 ø1.5 +0.1 –0 8±0.1 1.75±0.1 2±0.05 4±0.1 B 0.3±0.05 A B A 5.5±0.1 12 +0.3 –0.1 5.5±0.05 ø1.5 +0.1 –0 SEC.B-B 2.1±0.1 6.4±0.1 0.4 3.9±0.2 SEC.A-A C 2012 FUJITSU SEMICONDUCTOR LIMITED SOL8-EMBOSSTAPE9 : NFME-EMB-X0084-1-P-1 (Dimensions in mm) Material : Conductive polystyrene Heat proof temperature : No heat resistance.
MB85RS64V 2.2 IC orientation • ER type (User Direction of Feed) Index mark (Reel side) (User Direction of Feed) 2.3 Reel dimensions Reel cutout dimensions E D C B A W1 W2 r W3 : Hub unit width dimensions Reel No 1 2 3 4 5 6 7 8 Tape width 8 12 16 24 Symbol A 254 ± 2 254 ± 2 330 ± 2 254 ± 2 330 ± 2 254 ± 2 330 ± 2 B 32 C 13 ± 0.2 D 21 ± 0.
MB85RS64V 2.4 Taping ( 330mm Reel) Dry Pack Packing Specifications Outside diameter: 330mm reel Label I *1, *4 Embossed tapes Label I *1, *4 Desiccant Humidity indicator Aluminum laminated bag Dry pack Label I *1, *4 Heat seal Inner box Inner box Label I *1, *4 Taping Outer box *2, *3 Outer box Use adhesive tapes. Label II-A *4 Label II-B *4 *1: For a product of witch part number is suffixed with “E1”, a “ G bag and the inner boxes.
MB85RS64V 2.
MB85RS64V 2.
MB85RS64V MAJOR CHANGES IN THIS EDITION A change on a page is indicated by a vertical line drawn on the left side of that page. Page Section Change Results RDID 10 POWER ON/OFF SEQUENCE Defined values of tpu and tr at operation voltage. Min Max Unit Condition tpu 0.1 ms VDD 5.0 V 0.5 V Operation 0.6 ms VDD 3.3 V 0.3 V Operation tr 100 ms/V VDD 5.0 V 0.5 V Operation 1 ms/V VDD 3.3 V 0.3 V Operation NOTE ON USE Revised the following description.
MB85RS64V MEMO DS501-00015-4v0-E 33
MB85RS64V MEMO 34 DS501-00015-4v0-E
MB85RS64V MEMO DS501-00015-4v0-E 35
MB85RS64V Nomura Fudosan Shin-yokohama Bldg. 10-23, Shin-yokohama 2-Chome, Kohoku-ku Yokohama Kanagawa 222-0033, Japan http://jp.fujitsu.com/fsl/en/ For further information please contact: North and South America FUJITSU SEMICONDUCTOR AMERICA, INC. 1250 E. Arques Avenue, M/S 333 Sunnyvale, CA 94085-5401, U.S.A. Tel: +1-408-737-5600 Fax: +1-408-737-5999 http://us.fujitsu.com/micro/ Asia Pacific FUJITSU SEMICONDUCTOR ASIA PTE. LTD.
Adafruit SPI FRAM Breakout Created by lady ada Last updated on 2014-06-28 07:03:34 PM EDT
Guide Contents Guide Contents 2 Overview 3 Pinouts 5 (http://adafru.it/dui)Power Pins: 5 SPI Logic pins: 5 Assembly 7 Prepare the header strip: 7 Add the breakout board: 8 And Solder! 9 Wiring and Test 11 Arduino Wiring 11 Download Adafruit_FRAM_SPI 12 Load Demo 13 Library Reference 14 Hardware vs Software SPI 14 Begin 15 Writing 15 Block Protection 15 Downloads 16 Schematics 16 Fabrication Print 16 © Adafruit Industries https://learn.adafruit.
Overview You're probably familiar with SRAM, DRAM, EEPROM and Flash but what about FRAM? FRAM is 'ferroelectric' RAM, which has some very interesting and useful properties. Unlike SRAM, FRAM does not lose the data when power is lost. In that sense it's a durable storage memory chip like Flash. However, it is much faster than Flash - and you don't have to deal with writing or erasing pages. © Adafruit Industries https://learn.adafruit.
This particular FRAM chip has 64 Kbits (8 KBytes) of storage, interfaces using SPI, and can run at up to 20MHz SPI rates. Each byte can be read and written instantaneously (like SRAM) but will keep the memory for 95 years at room temperature. Each byte can be read/written 10,000,000,000,000 times so you don't have to worry too much about wear leveling. With the best of SRAM and Flash combined, this chip can let you buffer fairly-high speed data without worrying about data-loss.
Pinouts The FRAM chip is the little guy in the middle. On the bottom we have the power and interface pins (http://adafru.it/dui)Power Pins: VCC - this is the power pin. Since the chip uses 3-5VDC you should pick whatever the logic voltage you're using. For most Arduino's that's 5V. GND - common ground for power and logic SPI Logic pins: All pins are 3-5V compliant and use whatever logic level is on VCC HOLD - this is a 'wait' pin for the SPI bus. When pulled low, it puts the SPI bus on hold.
MOSI - this is the Master Out Slave In pin, for data sent from your processor to the FRAM CS - this is the chip select pin, drop it low to start an SPI transaction. Its an input to the chip WP - Write Protect pin. This is used to write protect the status register o nly! This pin does not directly affect write protection for the entire chip. Instead, it protects the block-protect register which is configured however you want (sometimes only half the FRAM is protected) © Adafruit Industries https://learn.
Assembly Prepare the header strip: Cut the strip to length if necessary. It will be easier to solder if you insert it into a breadboard - lo ng pins do wn © Adafruit Industries https://learn.adafruit.
Add the breakout board: Place the breakout board over the pins so that the short pins poke through the breakout pads © Adafruit Industries https://learn.adafruit.
And Solder! Be sure to solder all pins for reliable electrical contact. (For tips on soldering, be sure to check out our Guide to Excellent Soldering (http://adafru.it/aTk)). © Adafruit Industries https://learn.adafruit.
You're done! Check your solder joints visually and continue onto the next steps © Adafruit Industries https://learn.adafruit.
Wiring and Test Arduino Wiring © Adafruit Industries https://learn.adafruit.
You can easily wire this breakout to any microcontroller, we'll be using an Arduino Connect Vcc to the power supply, 3V or 5V is fine. Use the same voltage that the microcontroller logic is based off of. For most Arduinos, that is 5V Connect GND to common power/data ground Connect the SCK pin to the SPI clock pin on your Arduino. We'll be using Digital #13 which is also the hardware SPI pin on an Uno Connect the MISO pin to the SPI MISO pin on your Arduino.
Download Adafruit_FRAM_SPI Library http://adafru.it/du6 Rename the uncompressed folder Adafruit_FRAM_SPI and check that the Adafruit_FRAM_SPI folder contains Adafruit_FRAM_SPI.cpp and Adafruit_FRAM_SPI.h Place the Adafruit_FRAM_SPI library folder your arduino sketchfo lder/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE. We also have a great tutorial on Arduino library installation at: http://learn.adafruit.
The test is fairly simple - It first verifies that the chip has been found. Then it reads the value written to location #0 in the memory, prints that out and write that value + 1 back to location #0. This acts like a restart-meter: every time the board is reset the value goes up one so you can keep track of how many times its been restarted.
Software SPI is not as fast (maybe 1MHz max on an UNO), but you can switch pins around. Begin You can initialize the SPI interface and chip with begin() fram.begin() It will return true or false depending on whether a valid FRAM chip was found Writing Then to write a value, call fram.writeEnable(true); fram.write8(address, byte-value); fram.writeEnable(false); to write an 8-bit value to the address location Later on of course you can also read with fram.read8(address); which returns a byte reading.
Downloads MB85RS64V Datasheet (http://adafru.it/du7) Schematics Fabrication Print © Adafruit Industries https://learn.adafruit.
© Adafruit Industries Last Updated: 2014-06-28 07:03:35 PM EDT Page 17 of 17
