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rev. 1.0 12/10 copyright ? 2010 by silicon laboratories cp2103 cp2103 s ingle -c hip usb to uart b ridge single-chip usb to uart data transfer ?? integrated usb transceiver ; no external resistors required ?? integrated clock; no external crystal required ?? integrated 1024-byte eeprom for vendor id, product id, serial number, power descriptor, release number, and product description strings ?? on-chip power-on reset circuit ?? on-chip voltage regulator: 3.3 v output usb function controller ?? usb specification 2.0 compliant; full-speed (12 mbps) ?? usb suspend states supported via suspend pins asynchronous serial data bus (uart) ?? all handshaking and modem interface signals ?? data formats supported: - data bits: 5, 6, 7, and 8 - stop bits: 1, 1.5, and 2 - parity: odd, even, mark, space, no parity ?? baud rates: 300 bps to 1 mbps ?? 576 byte receive buffer; 640 byte transmit buffer ?? hardware or x-on/x-off handshaking supported ?? four gpio signals for status and control ?? configurable i/o (1.8 v to v dd ) using v io pin ?? configurable i/o (v dd to 5 v) using external pull-up ?? rs-485 mode with bus transceiver control virtual com port device drivers ?? works with existing com port pc ap plications ?? royalty-free distribution license ?? windows 7 ? /vista ? /xp ? /server 2003 ? /2000 ? ?? mac ? os-x ?? linux usbxpress? direct driver support ?? royalty-free distribution license ?? windows 7/vista/xp/server 2003/2000 ?? windows ce 6.0, 5.0, and 4.2 example applications ?? upgrade of rs-232 legacy devices to usb ?? upgrade of rs-485 legacy devices to usb ?? cellular phone usb interface cable ?? pda usb interface cable ?? usb to rs-232 serial adapter supply voltage ?? self-powered: 3.0 to 3.6 v ?? usb bus powered: 4.0 to 5.25 v ?? i/o voltage: 1.8 v to v dd package ?? lead free 28-pin qfn (5x5 mm) ordering part number ?? cp2103-gm temperature range: ?40 to +85 c figure 1. example system diagram cp2103 3 . 3 v voltage regulator 48 mhz oscillator in out suspend suspend 11 12 regin 7 gnd 2 rst 9 d+ d- 4 8 uart ri dcd cts rts rxd txd dsr dtr 1 28 27 26 25 24 23 22 2 3 3 external rs-232 transceiver or uart circuitry (to external circuitry for usb suspend states) vbus d- d+ gnd 4 5 6 usb connector 6 1 vdd vbus usb function controller usb transceiver 640b tx buffer 576b rx buffer 1024b eeprom gpio_0 gpio_1 gpio_3 gpio_2 1 8 1 7 1 6 (to external circuitry for status and control) 4 vio 5 external voltage supply or direct connection to vdd 1 9
cp2103 2 rev. 1.0
rev. 1.0 3 cp2103 t able of c ontents section page 1. system overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. electrical specificat ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3. pinout and package defini tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4. usb function controller and transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5. asynchronous seri al data bus (uart) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6. gpio pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7. internal eeprom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8. cp2103 device drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.1. virtual com port drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.2. usbxpress drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.3. driver customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 8.4. driver certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 9. voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 10. relevant application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 document change list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 contact information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
cp2103 4 rev. 1.0 1. system overview the cp2103 is a highly-integrated usb-to-uart bridge controller providing a simp le solution for updating rs-232/rs-485 designs to usb using a minimum of components and pcb space. the cp2103 includes a usb 2.0 full-speed function contro ller, usb transceiver, oscillator, eeprom, and asynchronous serial data bus (uart) with full modem control signals in a compact 5x5 mm qfn-28 package (sometimes called ?mlf? or ?mlp?). no other external usb components are required. the on-chip eeprom may be us ed to customize the usb vendor id, pr oduct id, product description string, power descriptor, device release number, and device serial number as desired for oem applications. the eeprom is programmed on -board via the usb, allowing the programming step to be ea sily integrat ed into the product manufacturing and testing process. royalty-free virtual com port (vcp ) device drivers provided by s ilicon laboratories a llow a cp2103-based product to appear as a com port to pc applications. the cp2103 uart interface implements all rs-232/rs-485 signals, including control and handshaking signals; so, exis ting system firmware does not need to be modified. the device also features up to four gpio signals that can be user-defined for status and control information. support for i/o interface voltages down to 1.8 v is provided via a v io pin. in many existing rs-232 designs, all that is required to update the design from rs-232 to usb is to replace the rs-232 level-translator with the cp2103. direct access driver support is av ailable through the silic on laboratories usbxpre ss driver set. go to www.silabs.com for the latest application notes and product support information for cp2103. an evaluation kit for the cp2103 (part number: cp2103ek) is available. it includes a cp2103-based usb-to- uart/rs-232 evaluation board, a complete set of vcp device drivers, usb and rs-232 cables, and complete documentation. contact a silicon lab s sales representatives or visit www.silabs.com to order the cp2103 evaluation kit.
rev. 1.0 5 cp2103 2. electrical specifications table 1. absolute maximum ratings parameters conditions min typ max units ambient temperature under bias ?55 ? 125 c storage temperature ?65 ? 150 c voltage on any i/o pin or rst with respect to gnd ?0.3 ? 5.8 v voltage on v dd or v io with respect to gnd ?0.3 ? 4.2 v maximum total current through v dd , v io , and gnd ? ? 500 ma maximum output current sunk by rst or any i/o pin ? ? 100 ma note: stresses above those listed may cause permanent damage to t he device. this is a stress rating only, and functional operation of the devices at or exceeding the conditions in th e operation listings of this sp ecification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. table 2. global dc electrical characteristics v dd = 3.0 to 3.6 v, ?40 to +85 c unless otherwise specified parameters conditions min typ max units supply voltage (v dd ) 3.0 3.3 3.6 v supply voltage (v io )1 . 8 3 . 3 v dd v supply current 1 normal operation, v reg enabled ?2026ma supply current 1 suspended, v reg enabled ?80100a supply current - usb pull-up 2 ?200228a v io supply current vbus = 0 v dd =0 v io =3.0v ?500? a specified operating temperature range ?40 ? +85 c notes: 1. if the device is connected to the usb bus, the usb pull- up current should be added to the supply current for total supply current. 2. the usb pull-up supply current values are calculated based on usb specifications.
cp2103 6 rev. 1.0 table 3. uart and suspend i/o dc electrical characteristics v io =v dd = 2.7 to 3.6 v, ?40 to +85 c unless otherwise specified parameters conditions min typ max units output high voltage (v oh )i oh =?10a i oh =?3ma i oh =?10ma v io ?0.1 v io ?0.7 ? ? ? v io ?0.8 ? ? ? v output low voltage (v ol )i ol =8.5ma i ol =10a ? ? ? ? 0.6 0.1 v input high voltage (v ih )2 . 0 ? ? v input low voltage (v il )? ? 0 . 8 v input leakage current weak pull-ups enabled weak pull-ups disabled ? ? 25 ? 50 1 a maximum input voltage open drain, logic high (1) ? ? 5.8 v table 4. uart and suspend i/o dc electrical characteristics (low-voltage operation) v io =1.8v, v dd = 2.7 to 3.6 v, ?40 to +85 c unless otherwise specified parameters conditions min typ max units output high voltage (v oh )i oh =?10a i oh =?1ma v io ?0.1 v io ?0.4 ? ? ? ? v output low voltage (v ol )i ol =10a i ol =3ma ? ? ? ? 0.1 0.4 v input high voltage (v ih )v io x 0.7 ? ? v input low voltage (v il )? ? v io x 0.3 v input leakage current weak pull-ups enabled weak pull-ups disabled ? ? ? 6 1 15 a maximum input voltage open drain, logic high (1) ? ? 5.8 v
rev. 1.0 7 cp2103 table 5. reset electrical characteristics ?40 to +85 c unless otherwise specified parameters conditi ons min typ max units rst input high voltage 0.7 x vio ? ? v rst input low voltage ? ? 0.3 x vio v minimum rst low time to generate a system reset 15 ? ? s table 6. voltage regulator electrical specifications ?40 to +85 c unless otherwise specified parameters conditions min typ max units input voltage range 4.0 ? 5.25 v output voltage output current = 1 to 100 ma* 3.0 3.3 3.6 v vbus detection input threshold 1.0 1.8 4.0 v bias current ? 110 ? a *note: the maximum regulator supply current is 100 ma.
cp2103 8 rev. 1.0 3. pinout and p ackage definitions table 7. cp2103 pin definitions name pin # type description v dd 6 power in power out 3.0?3.6 v power supply voltage input. 3.3 v voltage regulator output. see "9. voltage regulator" on page 16. v io 5 power in 1.8 v to v dd i/o supply voltage input. gnd 2 ground. must be tied to ground. sgnd ground. must be tied to ground. rst 9 d i/o device reset. open-drain output of internal por or v dd monitor. an external source can initiate a syste m reset by driving this pin low for at least 15 s. regin 7 power in 5 v regulator input. this pin is the input to the on-chip voltage regu- lator. vbus 8 d in vbus sense input. this pin should be connected to the vbus signal of a usb network. a 5 v signal on this pin indicates a usb network connection. d+ 3 d i/o usb d+ d? 4 d i/o usb d? txd 25 d out asynchronous data output (uart transmit) rxd 24 d in asynchronous data input (uart receive) cts 22* d in clear to send control input (active low) rts 23* d out ready to send control output (active low) dsr 26* d in data set ready control input (active low) dtr 27* d out data terminal read y control output (active low) dcd 28* d in data carrier detect control inpu t (active low) ri 1* d in ring indicator control input (active low) suspend 12* d out this pin is driven high wh en the cp2103 ente rs the usb suspend state. suspend 11* d out this pin is driven low when the cp2103 enters the usb suspend state. nc 10, 13?15, 20?21 these pins should be left unconnected or tied to v dd . gpio.3 16 d i/o user-configur able input or output. gpio.2 17 d i/o user-configur able input or output. gpio.1 18 d i/o user-configur able input or output. gpio.0 19 d i/o user-configur able input or output. *note: pins can be left unconnected when not used.
rev. 1.0 9 cp2103 figure 2. qfn-28 pinout diagram (top view) 4 5 6 7 2 1 3 11 12 13 14 9 8 10 18 17 16 15 20 21 19 25 26 27 28 23 22 24 cp2103 top view ri gnd d+ d- v dd regin vbus rst nc suspend suspend nc nc nc gpio.3 gpio.2 gpio.1 gpio.0 nc nc cts rts rxd txd dsr dtr dcd sgnd sgnd v io
cp2103 10 rev. 1.0 figure 3. qfn-28 package drawing table 8. qfn-28 package dimensions dimension min nom max dimension min nom max a 0.80 0.90 1.00 e2 2.90 3.15 3.35 a1 0.03 0.07 0.11 l 0.45 0.55 0.65 a3 0.25 ref aaa 0.15 b 0.18 0.25 0.30 bbb 0.10 d 5.00 bsc. ddd 0.05 d2 2.90 3.15 3.35 eee 0.08 e 0.50 bsc. z 0.435 e 5.00 bsc. y 0.18 notes: 1. all dimensions shown are in millimeters (mm) unless otherwise noted. 2. dimensioning and tolerancing per ansi y14.5m-1994. 3. this drawing conforms to jedec outlin e mo-243, variation vhhd except for cu stom features d2, e2, l, z, and y which are toleranced per supplier designation. 4. recommended card reflow profile is per the jedec/ipc j-std-020 specif ication for small body components.
rev. 1.0 11 cp2103 figure 4. typical qfn-28 land pattern
cp2103 12 rev. 1.0 figure 5. typical qfn-28 solder paste diagram
rev. 1.0 13 cp2103 4. usb function controller and transceiver the universal serial bus func tion controller in the cp2103 is a usb 2.0 compliant full-speed device with integrated transceiver and on-chip matching and pull-up resistors. the usb function controller manages all data transfers between the usb and the uart as well as command requests generated by the usb host controller and commands for controlling the function of the uart. the usb suspend and resume signals are supported for power management of both the cp2103 device as well as external circuitry. the cp2103 w ill enter suspend mode when suspend signaling is de tected on the bus. upon entering suspend mode, the cp2103 asserts th e suspend and suspend signals. suspend and suspend are also asserted after a cp2103 reset until device configuration during usb enumeration is complete. the cp2103 exits the suspend mode when any of the foll owing events occurs: (1) resume signaling is detected or generated, (2) a usb reset signal is detected, or (3) a device reset occurs. upon exit from suspend mode, the suspend and suspend signals are de-asserted. both suspend and suspend temporarily float high during a cp2103 reset. if this behavior is undesirable, a strong pulldown (10 k ? ) can be used to ensure suspend remains low during reset. see figure 6 for other recommended options. figure 6. typical connection diagram option 1: a 4.7 k ? pull-up resistor can be added to increase noise immunity. option 2: a 4.7 f capacitor can be added if powering other devices from the on-chip regulator. option 3: avalanche transient voltage suppression diodes should be added for esd protection. option 3: use littlefuse p/n sp0503baht or equivalent. option 4: 10 k ? resistor to ground to hold suspend low on initial power on or device reset. 1 cp2103 suspend suspend 11 12 regin 7 gnd 2 rst 9 d+ 3 d- 4 8 c2 0.1 ? f c1 1 ? f ri dcd cts rts rxd txd dsr dtr 1 28 27 26 25 24 23 22 2 3 external rs-232 transceiver or uart circuitry (to external circuitry for usb suspend states) vbus d- d+ gnd 4 5 6 usb connector 6 vdd vbus vdd r1 4.7 k ? d1 d2 d3 option 1 r2 10 k ? option 4 option 3 c4 4.7 ? f option 2 v io 5 1 ? f i/o voltage gpio.3 gpio.2 gpio.1 gpio.0 19 18 17 16 external application circuitry
cp2103 14 rev. 1.0 5. asynchronous serial data bus (uart) interface the cp2103 uart interface consists of the tx (transmit) and rx (receive) data signals as well as the rts, cts, dsr, dtr, dcd, and ri control sign als. the uart supports rts/cts, dsr/dtr, and x-on/x-off handshaking. the uart can be programmed to support a variety of data formats and baud rates. if the virtual com port drivers are used, the data format and baud rate are set during com port configuration on the pc. if the u sbxpress drivers are used, the cp2103 is configured th rough the usbxpress api. th e available data formats and baud rates are listed in table 9. 6. gpio pins the cp2103 supports four user-configurable gpio pins fo r status and control information. more information regarding the configuration and use of these pins can be found in ?an144: cp21xx device customization guide? and ?an223: port configuration and gpio for cp210x? available at www.silabs.com. 7. internal eeprom the cp2103 includes an internal eeprom that may be used to customize the usb v endor id (vid), product id (pid), product description string, power descriptor, device release number, and device serial number as desired for oem applications. if the eeprom is not programmed with oem data, the default configuration data shown in table 10 is used. while customization of the usb configuration data is optional, it is recommended to customize the vid/pid combination. a unique vid/pi d combination prevents the driver from conflicting with any other usb driver. a vendor id can be obtained from www.usb.org , or silicon labs can provide a free pid for the oem product that can be used with the silicon laboratories vid. it is also recommended to customize t he serial number if the oem application is one in which it is possible for multiple cp2103-based de vices to be connecte d to the same pc. the internal eeprom is prog rammed via the usb. this allows the oem's usb configuration data and serial number to be written to the cp2103 on-board during the manufacturing and testing pr ocess. a stand-alone utility for programming the internal eeprom is available from silicon labs. a library of routines provided in the form of a windows ? dll is also available. this library can be used to integrate the eeprom programming step into custom software used by the oem to streamline testing and serial number management during manufacturing. the eeprom has a typical endurance of 100,000 write cycles with a data retention of 100 ye ars. usb descriptors can be locked to prevent future modification. table 9. data formats and baud rates data bits 5, 6, 7, and 8 stop bits 1, 1.5 1 , and 2 parity type none, even, odd, mark, space baud rates 2 300, 600, 1200, 1800, 2400, 4000, 4800, 7200, 9600, 14400, 16000, 19200, 28800, 38400, 51200, 56000, 57600, 64000, 76800, 1152 00, 128000, 153600, 230400, 250000, 256000, 460800, 500000, 576000, 921600 3 notes: 1. 5-bit only. 2. additional baud rates are supported. see ?an205: cp210x baud rate support?. 3. 7 or 8 data bits only.
rev. 1.0 15 cp2103 8. cp2103 device drivers there are two sets of device drivers available for the cp 2103 devices: the virtual com port (vcp) drivers and the usbxpress direct access drivers. only one set of dr ivers is necessary to interface with t he device. the latest drivers are available at http://www.silabs.com/products/m icrocontroller/downloads.asp . 8.1. virtual co m port drivers the cp2103 virtual com port (vcp) device drivers a llow a cp2103-based device to appear to the pc's application software as a com port. application software running on the pc accesses the cp2103-based device as it would access a standard hardware com port. howeve r, actual data transfer between the pc and the cp2103 device is performed over the usb inte rface. therefore, existi ng com port applications ma y be used to transfer data via the usb to the cp2103-based device without modifying the application. see ?an197: serial communications guide for the cp210x? for example co de for interfacing to a cp2103 using the virtual com drivers. 8.2. usbxpress drivers the silicon laboratories usbxpress drivers provide an alternate solution for inte rfacing with cp2103 devices. no serial port protocol expertise is required. instead, a simple , high-level application program interface (api) is used to provide simpler cp201x connectivity and functionalit y. the usbxpress for cp210x development kit includes windows device drivers, windows device driver installe rs and uninstallers, and a host interface function library (host api) provided in the form of a windows dynamic link library (dll). the usbxpress driver set is recommended for new products that also include new pc software. the usbxpress interface is described in ?an169: usbxpress ? programmer's guide.? 8.3. driver customization in addition to customizing the device as described in ?7. internal eeprom? , the drivers and the drivers installation package can be also be customized. see ?an220: usb driv er customization? for more information on generating customized vcp and usbxpress drivers. 8.4. driver certification the default drivers that are shipped with the cp2103 are microsoft whql (windows hardware quality labs) certified. the certification means that the drivers have been tested by microsoft, and their latest operating systems (xp and vista) allow the drivers to be installed without any warnings or errors. the customized drivers generated using the an220 software are not automatically certified. they must go first through the microsoft driver reseller submission process. contact silicon lab oratories support fo r assistance with this process. table 10. default usb configuration data name value vendor id 10c4h product id ea60h power descriptor (attributes) 80h power descriptor (max. power) 32h release number 0100h serial number 0001 (63 characters maximum) product description string ?cp2103 usb to uart bridge controller? (126 characters maximum)
cp2103 16 rev. 1.0 9. voltage regulator the cp2103 includes an on-chip 5 to 3 v voltage regulator. this allows the cp2103 to be configured as either a usb bus-powered device or a usb self-powered device. these configurations are shown in figures 7 and 8. when enabled, the 3 v voltage regulator output appears on the v dd pin and can be used to power external 3 v devices. see table 11 for the voltage regulator electrical characteristics. alternatively, if 3 v power is supplied to the v dd pin, the cp2103 can function as a usb self-powered device with the voltage regulator disabled. for this configuration, it is recommended that the regin input be tied to the 3 v net to disable the voltage regulator. this configuration is shown in figure 9. the usb max power and power attributes descriptor must match the device power usage and configuration. see ?an144: cp21xx device customizatio n guide? for information on how to customize usb descriptors for the cp2103. note: it is recommended that additi onal decoupling capacitance (e.g., 0.1 f in pa rallel with 1.0 f) be provided on the regin input. figure 7. configuration 1: usb bus-powered table 11. voltage regulator electrical specifications ?40 to +85 c unless otherwise specified. parameter conditions min typ max units input voltage range 4.0 ? 5.25 v output voltage output current = 1 to 100 ma* 3.0 3.3 3.6 v vbus detection input threshold 1.0 1.8 4.0 v bias current ? 110 ? a *note: the maximum regulator supply current is 100 ma. voltage regulator (reg0) 5 v in 3 v out vbus sense regin vbus from vbus to 3 v power net device power net v dd cp2103
rev. 1.0 17 cp2103 figure 8. configuration 2: usb self-powered figure 9. configuration 3: usb self-powered, regulator bypassed voltage regu lator (reg0) 5 v in 3 v out vbus sense regin vbus to 3v power net device power net v dd cp2103 from 5 v power net from vbus voltage regulator (reg0) 5 v in 3 v out vbus sense regin vbus from 3 v power net device power net v dd cp2103 from vbus
cp2103 18 rev. 1.0 10. relevant ap plication notes the following application notes are applicable to the cp21 03. the latest versions of these application notes and their accompanying software are available at: http://www.silabs.com/products/mcu /pages/applicationnotes.aspx . ? an144: cp21xx device customization guide this application note describes how to use the an14 4 software to configure the usb parameters on the cp2103 devices. ? an169: usbxpress ? programmer's guide this application note describes the usbxpre ss api interface and in cludes example code. ? an197: serial communications guide for the cp210x this application note describes how to use the standard windows com port function to communicate with the cp2103 and includes example code. ? an205: cp210x baud rate support this application note describes how to use the an205 so ftware to configure the baud rate aliasing feature on the cp2103 devices. ? an220: usb driver customization this application note describes how to use the an220 software to customize the vcp or usbxpress drivers with oem information. ? an223: port configuration and gpio for cp210x this application note describes how to use the an223 soft ware to configure the gpio?s other configurable pins.
rev. 1.0 19 cp2103 d ocument c hange l ist revision 0.1 to revision 0.2 ? updated ?linux 2.40? bullet on page 1. revision 0.2 to revision 0.3 ? added additional supported operating systems on page 1. ? changed vdd conditions of tables 2 and 3 from a minimum of 2.7 to 3.0 v. ? updated typical and max supply current numbers in ta b l e 2 . ? updated package drawings in figures 3, 4, and 5. ? removed tantalum requirement in figure 6. ? consolidate sections 9 and 10. ? added section "10. relevant application notes" on page 18. revision 0.3 to revision 0.4 ? added voltage numbers to table 4 on page 6. ? corrected notes numbering in table 8 on page 10. revision 0.4 to revision 1.0 ? updated supported operating systems on page 1. ? updated notes in table 2. ? updated an144 title throughout document.
cp2103 20 rev. 1.0 c ontact i nformation silicon laboratories inc. 400 west cesar chavez austin, tx 78701 tel: 1+(512) 416-8500 fax: 1+(512) 416-9669 toll free: 1+(877) 444-3032 please visit the silicon labs technical support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. silicon laboratories, silicon labs, and usbxpre ss are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders the information in this document is believed to be accurate in a ll respects at the time of publication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and om issions, and disclaims respons ibility for any consequences resu lting from the use of information included herein. a dditionally, silicon laboratories assumes no re sponsibility for the functioning of und escribed fea- tures or parameters. silicon laboratories reserves the right to make changes without further notice. silicon laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does silicon laboratories assume any liability arising out of the application or use of any product or circuit, and specif ically disclaims any and all liability, in cluding without limitation consequential or incidental damages. silicon laboratories products are not designed, intended, or authorized for use in applica tions intend- ed to support or sustain life, or for any other application in which the failure of the silicon laboratories product could crea te a situation where personal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unaut horized application, buyer sha ll indemnify and hold silicon laboratories harmless against all claims and damages.

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