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this product conforms to specifications per the terms of the ramtron standard warranty. the product has completed ramtrons internal qualification testing and has reached production status. cypress semiconductor corporation ? 198 champion court ? san jose, ca 95134 - 1709 ? 408 - 943 - 2600 document number: 001 - 84485 rev. * a revised march 07 , 2013 fm 25l16b 16 kb serial 3v f - ram memory features 16 k bit ferroelectric nonvolatile ram organized as 2,048 x 8 bits high endurance 100 trillion (10 14 ) read/write s 38 year data retention ( @ +75oc) nodelay? writes advanced high - reliability ferroelectric process very fast serial peripheral interface - spi up to 20 mhz frequency direct hardware replacement for eeprom spi mode 0 & 3 (cpol, cpha=0,0 & 1,1) sophisticated write protection scheme hardware protection software protection low power consumption low voltage operation 2.7 - 3.6 v 200 a active current (1 mhz) 3 a (typ.) standby current industry standard configuration industrial temperature - 40 c to +85 c 8 - pin green/rohs soic and tdfn packages description the fm 25l16b is a 16 - kilobit nonvolatile memory employing an advanced ferroelectric process. a ferroelectric random access memory or f - ram is nonvolatile and performs reads and writes like a ram. it provides reliable data retention for 38 years while eliminating the complexities, overhead, and system level reliability problems caused by eeprom and other nonvolatile memories. t he fm 25l16b p erforms write operations at bus speed. no write delays are incurred. data is written to the m emory array immediately after each byte has been transferred to the device. the next bus cycle may commence without the need for data polling . the fm25l16b is capa ble of supporting 10 14 read/write cycles, or a million times more write cycles than eeprom . these capabilities make the fm 25l16b 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 eeprom can cause data loss. the fm 25l16b provides substantial benefits to users of serial eeprom as a hardware drop - in replacement. the fm 25l16b uses th e high - speed spi bus, which enhances the high - speed write capability of f - ram technology. device specifications are guaranteed over an industrial temperature range of - 40c to +85c. pin configuration pin name function /cs chip select /wp write protect /hold hold sck serial clock si serial data input so serial data output vdd supply voltage vss ground ordering information fm25l16b - g green/rohs 8 - pin soic fm25l16b - gtr green/rohs 8 - pin soic, tape & reel fm25l16b - dg green/rohs 8 - pin tdfn fm25l16b - dgtr green/rohs 8 - pin tdfn, tape & reel /cs so /wp vss vdd /hold sck si 8 7 6 5 1 2 3 4 top view cs so wp vss vdd hold sck si 1 2 3 4 8 7 6 5
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 2 of 1 5 figure 1. block diagram pin descriptions pin name i/o description /cs input chip select: this active low input activates the device. when high, the device enters low - power standby mode, ignores other inputs, and all outputs are tri - stated. when low, the device internally activates the sck signal. a falling edge on /cs must occur prior to every op - code. sck input serial clock: all i/o activity is synchronized to the serial clock. inputs are latched on the rising edge and outputs occur on the falling edge. since the device is static, the clock frequency may be any value between 0 and 20 m hz and may be interrupted at any time. /hold input hold: the /hold pin is used when the host cpu must interrupt a memory operation for another task. when /hold is low, the current operation is suspended. the device ignores any transition on sck or /cs. all transitions on /hold must occur while sck is low. /wp input write protect: this active low pin prevents write operations to the status register. this is critical since other write protection features are controlled through the status register. a complete explanation of write pro tection is provided on p ages 6 and 7. si input serial input: all data is input to the device on this pin. the pin is sampled on the rising edge of sck and is ignored at other times. it should always be driven to a valid logic level to meet i dd specifications. * si may be conn ected to so for a single pin data interface. so output serial output: this is the data output pin. it is driven during a read and remains tri - stated at all other times including when /hold is low. data transitions are driven on the falling edge of the se rial clock. * so may be connected to si for a single pin data interface. vdd supply power supply ( 2.7 v to 3.6 v) vss supply ground instruction decode clock generator control logic write protect instruction register address register counter 256 x 64 fram array 11 data i / o register 8 nonvolatile status register 3 wp cs hold sck so si
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 3 of 1 5 overview the fm 25l16b is a serial f - ram memory. the memory array is logically organized as 2,048 x 8 and is accessed using an industry standard serial peripheral interface or spi bus. functional operation of the f - ram is similar to serial eeproms. the major difference between the fm 25l16b and a serial eeprom with the same pinout is the f - ram ?s superior write performance. memory architecture when accessing the fm 25l16b , the user addresses 2,048 locations of 8 data bits each. these data bits are shifted serially. the addresses are accessed using the spi protocol, which includes a chip select (to permit multiple devices on the bus), an op - code, and a two - byte address. the upper 5 bits of the addre ss range are ?don?t care? values. the complete address of 1 1 - bits specifies each byte address uniquely. most functions of the fm 25l16b either are controlled by the spi interface or are handled automatically by on - board circuitry. the access time for memo ry operation is essentially zero, beyond the time needed for the serial protocol. that is, the memory is read or written at the speed of the spi bus. unlike an eeprom, it is not necessary to poll the device for a ready condition since writes occur at bus s peed. so, by the time a new bus transaction can be shifted into the device, a write operation will be complete. this is explained in more detail in the interface section. users expect several obvious system benefits from the fm 25l16b due to its fast writ e cycle and high endurance as compared with eeprom. in addition there are less obvious benefits as well. for example in a high noise environment, the fast - write operation is less susceptible to corruption than an eeprom since it is completed quickly. by co ntrast, an eeprom requiring milliseconds to write is vulnerable to noise during much of the cycle. note that the fm 25l16b contains no power management circuits other than a simple internal power - on reset. it is the users responsibility to ensure that v d d is within datasheet tolerances to prevent incorrect o peration. it is recommended that the part is not powered down with chip select active. serial peripheral interface C spi bus the fm 25l16b employs a serial peripheral interface (spi) bus. it is specifie d to operate at speeds up to 20 m hz. this high - speed serial bus provides high performance serial communication to a host microcontroller. many common microcontrollers have hardware spi ports allowing a direct interface. it is quite simple to emulate the po rt using ordinary port pins for microcontrollers that do not. the fm 25l16b operates in spi mode 0 and 3. the spi interface uses a total of four pins: clock, data - in, data - out, and chip select. a typical system configuration uses one or more fm 25l16b devices with a microcontroller that has a dedicated spi port, as figure 2 illustrates. note that the clock, data - in, and data - out pins are common among all devices. the chip select and hold pins must be driven separately for each fm 25l16b device. for a microcontroller that has no dedicated spi bus, a general purpose port may be used. to reduce hardware resources on the controller, it is possible to connect the two data pins (si, so) together and tie off (high) the hold pin. figure 3 shows a configuration that uses only three pins . protocol overview the spi interface is a synchronous serial interface using clock and data pins. it is intended to support multiple devices on the bus. each device is activated using a chip select. once chip select is activated by the bus master, the fm 25l16b will begin monitoring the clock and data lines. the relationship between the falling edge of /cs, the clock and data is dictated by the spi mode. the device will make a determination of the spi mode on the falling edge of e ach chip select. while there are four such modes, the fm 25l16b supports m odes 0 and 3. figure 4 shows the required signal relationships for m odes 0 and 3. for both modes, data is clocked into the fm 25l16b on the rising edge of sck and data is expected on the first rising edge after /cs goes active. if the clock begins from a high state, it will fall prior to beginning data transfer in order to create the first rising edge. the spi protocol is controlled by op - codes. these op - codes specify the commands t o the device. after /cs is activated the first byte transferred from the bus master is the op - code. following the op - code, any addresses and data are then transferred. note that the wren and wrdi op - codes are commands with no subsequent data transfer. im portant: the /cs must go inactive (high) after an operation is complete and before a new op - code can be issued. there is one valid op - code only per active chip select.
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 4 of 1 5 figure 2. system configuration with spi port figure 3. system configuration without spi port spi mode 0: cpol=0, cpha=0 spi mode 3: cpol=1, cpha=1 figure 4. spi modes 0 & 3 spi microcontroller fm 25 l 16 b so si sck cs hold fm 25 l 16 b so si sck cs hold sck mosi miso ss 1 ss 2 hold 1 hold 2 mosi : master out slave in miso : master in slave out ss : slave select m i c r o c o n t r o l l e r f m 2 5 l 1 6 b s o s i s c k c s h o l d p 1 . 0 p 1 . 1 p 1 . 2 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 5 of 1 5 data transfer all data transfers to and from the fm 25l16b occur in 8 - bit groups. they are synchronized to the clock signal (sck), and they transfer most significant bit (msb) first. serial inputs are registered on the rising edge of sck. out puts are driven from the falling edge of sck. command structure there are six commands called op - codes that can be issued by the bus master to the fm 25l16b . they are listed in the table below. these op - codes control the functions performed by the memory. they can be divided into three categories. first, there are commands that have no subsequent operations. they perform a single function such as to enable a write operation. second are commands followed by one byte, either in or out. they operate on the status register. the third group includes commands for memory transactions followed by an address and one or more bytes of data. table 1. op - code commands n ame description op - code wren set write enable latch 0000 0110b wrdi write disable 0000 0100b rdsr read status register 0000 0101b wrsr write status register 0000 0001b read read memory data 0000 0011b write write memory data 0000 0010b wren - set write enable latch the fm 25l16b will power up with writes disabled. the wren command must be issued prior to any write operation. sending the wren op - code will allow the user to issue subsequent op - codes for write operations. these include writing the sta tus register and writing the memory. sending the wren op - code causes the internal write enable latch to be set. a flag bit in the status register, called wel, indicates the state of the latch. wel=1 indicates that writes are permitted. attempting to writ e the wel bit in the status register has no effect. completing any write operation will automatically clear the write - enable latch and prevent further writes without another wren command. figure 5 below illustrates the wren command bus configuration. wrdi - write disable the wrdi command disables all write activity by clearing the write enable latch. the user can verify that writes are disabled by reading the wel bit in the status register and verifying that wel=0. figure 6 illustrates the wrdi command bus configuration. figure 5. wren bus configuration figure 6. wrdi bus configuration
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 6 of 1 5 rdsr - read status register the rdsr command allows the bus master to verify the contents of the status register . reading status provides information about the current state of the write protection features. following the rdsr op - code, the fm 25l16b will return one byte with the conte nts of the status register . the status register is described in detail in a later section. wrsr C write status register the wrsr command allows the user to select certain write protection features by writing a byte to the status re gister . prior to issuing a wrsr command, the /wp pin must be high or inactive. note that on the fm 25l16b , /wp only prevents writing to the status register , not the memory array. prior to sending the wrsr command, the user must send a wren command to enable writes. note that executing a wrsr command is a write operation and therefore clears the write enable latch. the bus configuration of rdsr and wrsr are shown below. figure 7. rdsr bus configuration figure 8. wrsr bus configuration (wren not shown) status register & write protection the write protection features of the fm 25l16b are multi - tiered. first, a wren op - code must be issued prior to any write operation. assuming that writes are enabled using wren, writes to memory are controlled by the status register . as described above, writes to the status register are performed using the wrsr command and subject to the /wp pin. the status register is organized as follows. table 2. status register bit 7 6 5 4 3 2 1 0 name wpen 0 0 0 bp1 bp0 wel 0 bits 0 and 4 - 6 are fixed at 0 and can not be modified. note that bit 0 (ready in eeproms) is unnecessary as the f - ram writes in real - time and is never busy. the wpen, bp1 and bp0 control write protection features. they are nonvolatile (shaded yellow). the wel flag indicates the st ate of the write enable latch. attempting to directly wr ite the wel bit in the status register has no effect on its state . this bit is internally set and cleared via the wren and wrdi commands, respectively. bp1 and bp0 are memory block write protection bits. they specify portions of memory that are write pro tected as shown in the following table. table 3. block memory write protection bp1 bp0 protected address range 0 0 none 0 1 600h to 7 ffh (upper ?) 1 0 4 00h to 7 ffh (upper ?) 1 1 000h to 7 ffh (all)
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 7 of 1 5 the bp1 and bp0 bits and the write enable latch are the only mechanisms that protect the memory from writes. the remaining write protection features protect inadvertent changes to the block protect bits. the wpen bit controls the effect of the hardware / wp pin. when wpen is low, the /wp pin is ignored. when wpen is high, the /wp pin controls write access to the status register. thus the status register is write protected if wpen=1 and /wp=0. this scheme provides a write protection mechanism, which can p revent software from writing the memory under any circumstances. this occurs if the bp1 and bp0 are set to 1, the wpen bit is set to 1, and /wp is set to 0. this occurs because the block protect bits prevent writing memory and the /wp signal in hardware p revents altering the block protect bits (if wpen is high). therefore in this condition, hardware must be involved in allowing a write operation. the following table summarizes the write protection conditions. table 4. write protect ion wel wpen /wp protected blocks unprotected blocks status register 0 x x protected protected protected 1 0 x protected unprotected unprotected 1 1 0 protected unprotected protected 1 1 1 protected unprotected unprotected memory operation the spi interface, which is capable of a relatively high clock frequency, highlights the fast write capability of the f - ram technology. unlike spi - bus eeproms, the fm 25l16b can perform sequential writes at bus speed. no page register is needed an d any number of sequential writes may be performed. write operation all writes to the memory array begin with a wren op - code. the next op - code is the write instruction. this op - code is followed by a two - byte address value. the upper 5 - bits of the address are ignored. in total, the 1 1 - bits specify the address of the first data byte of the write operation. subsequent bytes are data and they are written sequentially. addresses are incremented internally as long as the bus master continues to issue clocks. if the last address of 7 ffh is reached, the counter will roll over to 000h. data is written msb first. a write operation is shown in figure 9. unlike eeproms, any number of bytes can be written sequentially and each byte is written to memory immediately after it is clocked in (after the 8 th clock). the rising edge of /cs terminates a write op - code operation. read operation after the falling edg e of /cs, the bus master can issue a read op - code. following this instruction is a two - byte address value. the upper 5 - bits of the addre ss are ignored. in total, the 11 - bits specify the address of the first byte of the read operation. after the op - code and address are complete, the si line is ignored. the bus master issues 8 clocks, with one bit read out for each. addresses are incremented internally as long as the bus master continues to issue c locks. if the last address of 7 ffh is reached, the counter wil l roll over to 0 00h. data is read msb first. the rising edge of /cs terminates a read op - code operation. a read operation is shown in figure 10. hold the /hold pin can be used to interrupt a serial operation without aborting it. if the bus master pulls the /hold pin low while sck is low, the current operation will pause. taking the /hold pin high while sck is low will resume an operation. the transitions of /hold must occur while sck is low, but the sck pin can toggle during a hold state.
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 8 of 1 5 figure 9. memory write (wren not shown) figure 10. memory read endurance the fm25l16b devices are capable of being accessed at least 10 14 times, reads or writes. an f - ram memory operates with a read and restore mechanism. therefore, an endurance cycle is applied on a row basis for each access (read or write) to the memory array. the f - ram architecture is based on an array of rows and columns. rows are defined by a10 - a3 and column addresses by a2 - a0. see block d iagram (pg 2) which shows the array as 256 rows of 64 - bits each. the entire row is internally accessed once whether a single byte or all eight bytes are read or written. each byte in the row is counted only once in an endurance calculation. the table belo w shows endurance calculations for 64 - byte repeating loop, which includes an op - code, a starting address, and a sequential 64 - byte data stream. this causes each byte to experience one endurance cycle through the loop. f - ram read and write endurance is vir tually unlimited even at 20mhz clock rate . table 5. time to reach endurance limit for repeating 64 - byte loop sck freq (mhz) endurance cycles/sec. endurance cycles/year years to reach limit 20 37,31 0 1.18 x 10 12 85.1 10 18,660 5.88 x 10 1 1 170.2 5 9,33 0 2.94 x 10 1 1 340.3 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 4 5 6 7 0 1 2 3 4 5 6 7 o p - c o d e 0 0 0 0 0 0 1 m s b 1 1 - b i t a d d r e s s x x x x x 1 0 9 3 2 1 0 7 6 5 4 3 2 1 0 l s b m s b l s b c s s c k s i s o d a t a 1 0 1 2 3 4 5 6 7 0 1 2 3 4 5 4 5 6 7 0 1 2 3 4 5 6 7 o p - c o d e 0 0 0 0 0 0 1 0 m s b 1 1 - b i t a d d r e s s x x x x x 1 0 3 2 1 0 7 6 5 4 3 2 1 0 l s b m s b l s b c s s c k s i s o d a t a 9 6
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 9 of 1 5 electrical specifications absolute maximum ratings symbol description ratings v dd power supply voltage with respect to v ss - 1.0v to +5.0v v in voltage on any pin with respect to v ss - 1.0v to +5.0v and v in < v dd +1.0v t stg storage temperature - 55 c to + 12 5 c t lead lead temperature (soldering, 10 seconds) 26 0 c v esd electrostatic discharge voltage - human body model (aec - q100 - 002 rev. e) - charged device model (aec - q100 - 011 rev. b) - machine model ( a ec - q100 - 003 rev. e ) 4kv 1.25kv 300v package moisture sensitivity level msl - 1 stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only, and the functional operation of the device at these or any other conditions above those listed in the operational section of this specification is not implied. exposure to absolute maximum ratings conditions for extended periods may affect device reliabil ity. dc operating conditions ( t a = - 40 c to + 85 c, v dd = 2.7 v to 3.6 v unless otherwise specified) symbol parameter min typ max units notes v dd power supply voltage 2.7 3.3 3.6 v i dd vdd supply current @ sck = 1.0 mhz @ sck = 20 .0 mhz 0.2 3.0 ma ma 1 i sb standby current - 3 6 a 2 i li input leakage current - 1 a 3 i lo output leakage current - 1 a 3 v ih input high voltage 0.7 v dd v dd + 0.3 v v il input low voltage - 0.3 0.3 v dd v v oh output high voltage @ i oh = - 2 ma v dd C 0.8 - v v ol output low voltage @ i ol = 2 ma - 0.4 v v hys input hysteresis 0.05 v dd - v 4 notes 1. sck toggling between v dd - 0.3v and v ss , other inputs v ss or v dd - 0.3v. 2. sck = si = /cs=v dd . all inputs v ss or v dd . 3. v ss v in v dd and v ss v out v dd . 4. characterized but not 100% tested in production. applies only to /cs and sck pins.
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 10 of 1 5 ac parameters ( t a = - 40 c to + 85 c , c l = 30pf , v dd = 2.7v to 3.6v unless otherwise specified ) symbol parameter min max units notes f ck sck clock frequency 0 20 mhz t ch clock high time 22 ns 1 t cl clock low time 22 ns 1 t csu chip select setup 10 ns t csh chip select hold 10 ns t od output disable time 20 ns 2 t odv output data valid time 20 ns t oh output hold time 0 ns t d deselect time 60 ns t r data in rise time 50 ns 2,3 t f data in fall time 50 ns 2,3 t su data setup time 5 ns t h data hold time 5 ns t hs /hold setup time 10 ns t hh /hold hold time 10 ns t hz /hold low to hi - z 20 ns 2 t lz /hold high to data active 20 ns 2 notes 1. t ch + t cl = 1/f ck . 2. characterized but not 100% tested in production. 3. rise and fall times measured b etween 10% and 90% of waveform. capacitance ( t a = 25 c, f=1.0 mhz, v dd = 3.3v) symbol parameter min max units notes c o output c apacitance (so) - 8 pf 1 c i input c apacitance - 6 pf 1 notes 1. this parameter is periodica lly sampled and not 100% tested. 2. sl ope measured at any point on v dd waveform . ac test conditions input pulse levels 10% and 90% of v dd input rise and fall times 5 ns input and out put timing levels 0.5 v dd output load capacitance 30 pf data retention symbol parameter min max units notes t dr @ +85oc 10 - years @ +80oc 19 - years @ +75oc 38 - years
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 11 of 1 5 serial data bus timing /hold timing power cycle timing power cycle timing ( t a = - 40 c to + 85 c , v dd = 2.7v to 3.6v unless otherwise specified ) symbol parameter min max units notes t pu v dd (min) to first access start 1 - ms t pd last access complete to v dd (min) 0 - s t v r v dd rise time 3 0 - s/v 1 t vf v dd fall time 3 0 - s/v 1 notes 1. sl ope measured at any point on v dd waveform . c s s c k s i s o 1 / t c k t c l t c h t c s h t o d v t o h t o d t c s u t s u t h t d t r t f cs sck so hold ths thh thz tlz ths thh v d d m i n t p u v d d c s t v r t p d t v f
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 12 of 1 5 mechanical drawing 8 - pin soic ( jedec standard ms - 012 , variation aa ) refer to jedec ms - 012 for complete dimensions and notes. all dimensions in millimeters . soic package marking scheme legend: xxx xx x= part number, p= package type (g=soic) r=rev code, lllllll= lot code ric=ramtron int?l corp, yy=year, ww=work week example: fm 25l16b , green soic package, year 2010, work week 47 fm 25l16b - g a 00002g1 ric10 47 xxxx xxx - p r ll llll l ricyyww pin 1 3 . 90 0 . 10 6 . 00 0 . 20 4 . 90 0 . 10 0 . 10 0 . 25 1 . 35 1 . 75 0 . 33 0 . 51 1 . 27 0 . 10 mm 0 . 25 0 . 50 45 0 . 40 1 . 27 0 . 19 0 . 25 0 - 8 recommended pcb footprint 7 . 70 0 . 65 1 . 27 2 . 00 3 . 70
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 13 of 1 5 8 - pin tdfn (4.0mm x 4.5mm body, 0.95mm pitch) note: all dimensions in millimeters . the exposed pad should be left floating. tdfn package marking scheme for body size 4.0mm x 4.5mm legend: r=ramtron, g=green tdfn package , xxxx=base part number llll= lot code yy=year, ww=work week example: green/rohs tdfn package, fm25l16 b, lot 0003, year 2011, work week 0 7 r 5l16 b 0003 1107 rg xxxx llll yyww pin 1 4 . 0 0 0 . 1 4 . 50 0 . 1 0 . 75 0 . 05 0 . 40 0 . 05 0 . 95 0 . 20 ref . pin 1 id 0 . 0 - 0 . 05 2 . 85 ref 3 . 60 0 . 10 2 . 6 0 0 . 1 0 exposed metal pad should be left floating . 4 . 30 0 . 45 0 . 95 recommended pcb footprint 0 . 60 0 . 30 0 . 1
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 14 of 1 5 revision history revision date summary 1.0 11/10/2010 initial release 1.1 12/15 /2010 added 4x4.5mm dfn package. fixed endurance section on pg 8. 1.2 2/15/2011 updated dfn package marking. changed t pu and t vf spec limit s. 1.3 3/22/2011 added esd ratings. 3.0 1/6/2012 changed to production status. changed t vf spec. document history document title: fm2 5l16b 16k b serial 3v f - ram memory document number: 001 - 8 4485 revision ecn orig. of change submission date description of change ** 3902952 gvch 02/25/2013 new spec *a 3924523 gvch 03/07/2013 changed t pu spec value from 10ms to 1ms
fm25l16b - 16kb 3v spi f - ram document number: 001 - 84485 rev. * a page 15 of 1 5 sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution centers, manufacturers representatives, and distributors. to find the office closest to you, visit us at cypress locations . products automotive cypress.com/go /a utomotive clocks & buffers cy press.com/go/clocks interface cypress.com/go /i nterface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory psoc cypress.com/go/psoc touch sensing cypress.com/go/touch usb controllers cypress.com/go/usb psoc ? solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 5 cypress developer community community | forums | blogs | video | training technical support cypress.com/go/support ramtron is a registered trademark and nodelay? is a trademark of cypress semiconductor corp. all other trademarks or registered trademarks referenced herein are the property of their respective owners. ? cypress semi conductor corporation, 2011 - 2013 . the information contained herein is subject to change without notice. cypress semiconductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress p roduct. nor does it convey or imply any license under patent or other rights. cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with cypress. furthermore, cypress does not authorize its products for use as critical components in life - support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress products in life - support systems application impl ies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. this source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and s ubject to worldwide patent protection (united states and foreign), united states copyright laws and international treaty provisions. cypress here by grants to licensee a personal, non - exclusive, non - transferable license to copy, use, modify, create derivative works of, and co mpile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in support of licen see product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. an y reproduction, modification, translation, compilation, or representation of this source code except as specified above is prohibited without the express w ritten permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to the materials described herein. cypress does n ot assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authorize it s products for use as critical components in life - support systems where a malfunction or failure may reasonably be expect ed to result in significant injury to the user. the inclusion of cypress product in a life - support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement .

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