1 features general ? high-performance, low-power avr ? (avr2 core) enhanced risc architecture ? 120 powerful instructions (most executed in a single clock cycle) low-power idle and power-down modes bond pad locations conforming to iso 7816-2 esd protection to 6000v operating ranges: from 2.7v to 3.3v and 4.5v to 5.5v compliant with gsm, 3gpp and emv 2000 specifications; pc industry compatible available in wafers, modules and industry-standard packages memory 32k bytes of rom program memory 8k bytes of flash program memory ? endurance: 10,000 minimum write/erase cycles 56k bytes of eeprom, including 64-byte otp area and 64-byte bit-addressable area ? 1 to 128-byte program/erase ? 2 ms program, 2 ms erase ? typically more than 500,000 write/erase cycles ? 10 years data retention 1.5k bytes ram peripherals i/o port ? configurable to support communication protocols including iso 7816-3 16-bit timer random number generator (fips 140-1) 2-level, 4-vector interrupt controller security advanced protection against physical attack environmental protection systems voltage monitor frequency monitor secure memory management/access protection (supervisor mode) development tools hardware development support on voyager emulation platform (atv1) software development support will be at90scsim software simulator (based on iar systems? c-spy ? product) description the AT90SC320856 is a low-power, high-performance, 8-bit microcontroller with rom, flash and eeprom memory, based on the avr enhanced risc architecture. by executing powerful instructions in a single clock cycle, the AT90SC320856 achieves throughputs close to 1 mips per mhz. its harvard architecture includes 32 general-purpose working registers directly connected to the alu, allowing two inde- pendent registers to be accessed in one single instruction executed in one clock cycle. on top of the 32k bytes of embedded rom, the AT90SC320856 includes 64k bytes of atmel?s high density, nonvolatile memory. the on-chip downloadable flash and code mappable eeprom allows the program memory to be reprogrammed in-system. this secure microcontroller for smart cards AT90SC320856 summary rev. 1707as?10/01 note: this is a summary document. a complete document is available under nda. for more information, please contact your local atmel sales office.
? atmel corporation 2001. atmel corporation makes no warranty for the use of its products, other than those expressly contained in the com- pany?s standard warranty which is detailed in atmel?s terms and conditions located on the company?s web site. the company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. no licenses to patents or other intellectual property of atmel are granted by the com- pany in connection with the sale of atmel products, expressly or by implication. atmel?s products are not authorized for use as critical compo- nents in life support devices or systems. corporate headquarters, 2325 orchard parkway, san jose, ca 95131, tel (408) 441-0311, fax (408) 487-2600 atmel colorado springs, 1150 e. cheyenne mtn. blvd., colorado springs, co 80906, tel (719) 576-3300, fax (719) 540-1759 atmel grenoble, avenue de rochepleine, bp 123, 38521 saint-egreve cedex, france, tel (33) 4-7658-3000, fax (33) 4-7658-3480 atmel heilbronn, theresienstrasse 2, pob 3535, d-74025 heilbronn, germany, tel (49) 71 31 67 25 94, fax (49) 71 31 67 24 23 atmel nantes, la chantrerie, bp 70602, 44306 nantes cedex 3, france, tel (33) 0 2 40 18 18 18, fax (33) 0 2 40 18 19 60 atmel rousset, zone industrielle, 13106 rousset cedex, france, tel (33) 4-4253-6000, fax (33) 4-4253-6001 atmel smart card ics, scottish enterprise technology park, east kilbride, scotland g75 0qr, tel (44) 1355-357-000, fax (44) 135 5-242-743 printed on recycled paper. technology combined with the versatile 8-bit cpu on a monolithic chip provides a highly flexible and cost-effective solution to many smart card applications. figure 1. the AT90SC320856 avr enhanced risc architecture instruction decoder flash program memory instruction register access control general purpose registers x y z status register ram data memory secure control interrupt unit iso 7816 i/o port timer v cc gnd control lines alu eeprom user memory otp pc clk access control in/out data bus 8-bit random number generator 16 16 16 8 88 rom program memory 1707as ? 10/01 at m e l ? and avr ? are the registered trademarks of atmel. c-spy ? is a registered trademark of iar systems ab. other terms and product names may be the trademark of others.
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