note: this is a summary document. a complete document is available under nda. for more information, please contact your local atmel sales office. 1. features ? full trusted computing group (tcg) trusted platform module (tpm) version 1.2 compatibility ? compliant with tcg pc client specific tpm interface specification version 1.2 ? single - chip turnkey solution ? hardware asymmetric crypto engine ? 2048 - bit r sa ? sign in 200 ms ? avr ? risc microprocessor ? internal eeprom storage for rsa keys ? 33 mhz lpc (low pin count) bus for easy pc interface ? secure hardware and firmware design and chip layout ? true random number generator (rng) C fips 140 - 2 compliant ? nv storage sp ac e for 1280 - bytes of user defined data ? 3.3v supply voltage ? 28- lead thin tssop, wide tssop or 40 - lead qfn packages ? offered in both commercial (0 to 70c) and industrial ( - 40 to +85c) temperature ranges 2. description the atmel ? at97sc3204 is a fully integr ated security module designed to be integrated into personal computers and other embedded systems. it implements version 1.2 of the trusted computing group (tcg) specification for trusted platform modules (tpm). the tpm includes a cryptographic accelerator capable of computing a 2048 - bit rsa signature in 200 ms and a 1024 - bit rsa signature in 40 ms. performance of the sha - 1 accelerator is 20 s per 64 - byte block. the chip communicates with the pc through the lpc interface. the tpm supports sirq (for interrupts ) and clkrun to permit clock stopping for power savings in mobile computers. trusted platform module atmel at97sc3204 lpc interface summary * see the full data sheet for detailed design information 5294bs C tpm C 9 /10
2 atmel at24c256c 5294bs C tpm C 9/10 table 1 -1. pin configurations pin name function v cc 3.3v supply voltage sb3v standby 3.3v supply voltage gnd ground lreset# pci reset input active low lad0 lpc command, addre ss, data line input/output lad1 lpc command, address, data line input/output lad2 lpc command, address, data line input/output lad3 lpc command, address, data line input/output lclk 33 mhz pci clock input lframe# lpc frame input clkrun# pci clock run input/output lpcpd# lpc power down input seriq serialized interrupt request input/output gpio6 general purpose input/output testi test input (disabled) testbi test input (disabled) atest atmel test pin nc no connect nbo not bounded out
atmel at24c256c 3 5294bs C tpm C 9/10 figure 2 - 1. pinout dia grams at est at est at est gnd sb3v gpio6 nc t esti t estbi v cc gnd nbo nbo nbo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 lpcpd# serirq lad0 gnd v cc lad1 lframe# lclk lad2 v cc gnd lad3 lreset# clk r un# 28-pin thin tssop 4.4 mm x 9.7 mm body 0.65 mm pitch 28-pin tssop 6.1 mm x 9.7 mm body 0.65 mm pitch 40-pin qfn 6.0 mm x 6.0 mm body 0.50 mm pitch at est at est lpcpd# serirq nbo nbo nbo nbo nbo nbo nbo nbo nbo nbo nbo nbo nbo nbo clk r un# lreset# at est gnd sb3v gpio6 nc t esti t estbi v cc gnd nbo lad0 gnd v cc lad1 lframe# lclk lad2 v cc gnd lad3 1 2 3 4 5 6 7 8 9 10 30 29 28 27 26 25 24 23 22 21 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31
4 atmel at24c256c 5294bs C tpm C 9/10 figure 2 - 2. atmel at97sc3204 block diagram r o m p r o g r a m e e p r o m p r o g r a m 33m h z l p c i nt e r f a c e g p i o g p i o 6 a v r 8- b i t r i s c c p u s r a m e e p r o m d a t a c r y p t o e ng i ne r n g t i m e r p h y s i c a l s e c u r i t y c i r c u i t r y the tpm includes a hardware random number generator, including a fips - approved pseudo random number generator that is used for key generation and tcg protocol functions. the rng is also available to the sys tem to generate random numbers that may be needed during normal operation. the chip uses a dynamic internal memory management scheme to store multiple rsa keys. other than the standard tcg commands (tpm_flushspecific, tpm_loadkey2), no system intervention is required to manage this internal key cache. the tpm is offered to oem and odm manufacturers as a turnkey solution, including the firmware integrated on the chip. in addition, atmel provides the necessary device driver software for integration into certa in operating systems, along with bios drivers. atmel will also provide manufacturing support software for use by oems and odms during initialization and verification of the tpm during board assembly. full documentation for tcg primitives can be found in th e tcg tpm main specification, parts 1 to 3, on the tcg web site located at https://www.trustedcomputinggroup.org . tpm features specific to pc client platforms are specified in the tcg pc client specifi c tpm interface specification, version 1.2, also available on the tcg web site. implementation guidance for 32 - bit pc platforms is outlined in the tcg pc client specific implementation specification for conventional bios for tcg version 1.2, also availa ble on the tcg web site.
atmel at24c256c 5 5294bs C tpm C 9/10 3. ordering information table 1 -2. atmel at24c256c ordering information atmel ordering code package operating range at97sc3204 (1) 28a2 (28 - pin thin tssop) lead - free, rohs commercial (0c to 70c) industrial ( - 40c to 85c) at97sc3204 (1) 28a3 (28 - pin tssop) lead - free, rohs commercial (0c to 70c) industrial ( - 40c to 85c) at97sc3204 (1) 40ml1 (40 - pin qfn) (2 ) lead - free, rohs commercial (0c to 70c) industrial ( - 40c to 85c) notes: 1. please see the atmel at97sc3204 datasheet addendum for the co mple te catalog number ordering code
6 atmel at24c256c 5294bs C tpm C 9/10 4. package drawing 28a2 C thin tssop title dra wing no. gpc rev . p ac ka g e dr a wing contact: pa c kaged r a wings@atmel.com 28a2 28a2 tfl b 28a2, 28-lead, 4.4x9.7 mm bod y , 0.65 pitch, thin sh r ink small outline p ac kage (tssop) 6/17/08 common dimensions (unit of measure = mm) symbol min nom max no te d 9.60 9.70 9.80 1,4 e 6.40 bsc e1 4.30 4.40 4.50 2,4 a 1.20 a2 0.80 1.00 1.05 b 0.19 0.30 3 e 0.65 bsc l 0.45 0.60 0.75 l1 1.00 ref this dr a wing is f or gene r al in f or mation onl y . please re f er to jedec dr a wing mo-153, v ar iation ae f or additional in f or mation . 1. dimension "d" does not include mold flash, prot r usions or gate b urr s . mold flash, prot r usions and gate b urrs shall not e xceed .15mm (.006 in) per sid e . 2. dimension "e1" does not include inter-lead flash or prot r usion s . inter-lead flash and prot r usions shall not e xceed .25mm (.010 in) per sid e . 3. dimension 'b' does not include dambar prot r usion . all ow ab le dambar prot r usion shall be 0.08 mm total in e xcess of the 'b' dimension at maxi m um mate r ial condition . dambar cannot be located on the l o w er r adius of the f oot . minim um space bet w een prot r usion and adjacent lead is 0.07 mm . 4. dimension 'd' and 'e1' to be dete r mined at datum plane h . a d a2 e b e e1 l l1
atmel at24c256c 7 5294bs C tpm C 9/10 28a3 C tssop 2325 orchard parkway san jose, ca 95131 title dra wing no . r rev . 1/8/02 common dimensions (unit of measure = mm) symbol min nom max no te d 9.60 9.70 9.80 2, 5 e 8.10 bsc e1 6.00 6.10 6.20 3, 5 a ? ? 1.20 a2 0.80 1.00 1.05 b 0.19 ? 0.30 4 e 0.65 bsc l 0.45 0.60 0.75 l1 1.00 ref 28a3, 28-lead, 6.1 x 9.7 mm bod y , 0.65 pitch, thin sh r ink small outline p ac kage (tssop) 28a3 l1 a l d a2 e e1 e b t op vi e w side vi e w end vi e w a 1. this dr a wing is f or gene r al inf or mation onl y . please re f er to jedec d r a wing mo-153, v ar iation db f or additional inf or mation . 2. dimension d does not include mold flash, prot r usions or gate b urr s . mold flash, prot r usions and gate b urrs shall not e xceed 0.15 mm (0.006 in) per sid e . 3. dimension e1 does not include inter-lead flash or prot r usion s . inter-lead flash and prot r usions shall not e xceed 0.25 mm (0.010 in) per sid e . 4. dimension b does not include dambar prot r usion . allow ab le dambar prot r usion shall be 0.08 mm total in e xcess of the b dimension at maxi m um mate r ial condition . dambar cannot be located on the l o w er r adius of the f oot . minim um space bet w een prot r usion and adjacent lead is 0.07 mm . 5. dimension d and e1 to be dete r mined at datum plane h . note:
8 atmel at24c256c 5294bs C tpm C 9/10 40ml1 C qfn 2325 orchard p ar kw a y san jos e , ca 95131 title dr a wing n o . r re v . a1 a3 a a2 0 side vi e w c 40ml1 9/27/07 common dimensions (unit of measure = mm) symbol min nom max n o te d 6.00 bsc e 6.00 bsc d2 3.95 4.10 4.25 e2 3.95 4.10 4.25 a - 0.85 0.90 a1 0.0 0.01 0.05 a2 - 0.65 0.70 a3 0.20 ref l 0.30 0.40 0.50 e 0.50 bsc b 0.18 0.23 0.30 2 d e t op vi e w n 2 3 1 pin 1 indicator l pin1 id b n d2 3 2 1 e bottom vi e w e2 1. this dr a wing is f or gene r al in f or mation onl y . ref er to jedec d r a wing mo-220, v ar iation wjjd-2, f or proper dimension s , tole r ance s , datum s , etc . 2. dimension b applies to metalli z ed te r minal and is measured bet w een 0.15 mm and 0.30 mm from the te r minal tip . if the te r minal has the optional r adius on the other end of the te r minal, the dimension should not be measured in that r adius area . note: 40ml1, , 40-lead 6.0 x 6.0 mm bod y , 0.50 mm pitch, molded quad flat no lead p ac kage (qfn) punched
atmel at24c256c 9 5294bs C tpm C 9/10 5. revision history doc. rev. date comments 5294bs 10/2010 added industrial grade support detail 5294as 01/2008 initial document release
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