1/5 june 1998 ? AN626 application note eeprom product numbering the product numbering strategy, on st eeprom parts, has been rationalized. previously, the numbering strategy had had to cater many different ranges of products, when the separate groups were united to form the company. the new numbering strategy is being adopted on all forthcoming products, ranges and fam- ilies, and will remain constant for the foreseeable future. the new product numbering scheme is being introduced gradually, with no immediate effect on existing orders. product numbers are being changed only when a device upgrade is made (such as a die shrink) or when a new product is introduced. (all major product changes are announced with a product change notice.) the new product numbers consist of a 14 digit ordering code (e.g. m28256-12wka6t), grouped into eight fields (a to h) as shown in table 1. an additional solidus, /, and two digits are used by st to aid traceability, and might appear on some doc- uments. these can be ignored as far as the product type and specification are concerned. table 1. digit field use 1st a product line (m = memory) 2nd b product family 3rd 4th c memory capacity 5th 6th 7th - dash, to separate the product number identifiers from the product option designators 8th d operating speed or product options 9th 10th e v cc range 11th f package type 12th 13th g temperature range 14th h tape and reel packaging
AN626 - application note 2/5 the st at the start of the product number , to indicate sgs-thomson microelectronics, is now being phased out . table 2. field a, 1st character, product line m memory table 3. field b, 2nd and 3rd characters, product family 93 non-volatile memory microwire ? 24 i 2 c ? (including xi 2 c) 25 spi 3 1 mb 95 spi < 1 mb 28 parallel 33 application specific memory microwire 34 i 2 c 35 spi 37 eprom 38 parallel eeprom or dual voltage flash 39 flash+ table 4. field c, 4th, 5th and 6th characters, memory capacity c01 e.g. m24c01 1 kb i 2 c serial eeprom c64 e.g. m24c64 64 kb bit i 2 c serial eeprom 128 e.g. m24128 128 kb bit i 2 c serial eeprom etc. 010 e.g. m95010 1 kb spi serial eeprom 640 e.g. m95640 64 kb spi serial eeprom 128 e.g. m95128 128 kb spi serial eeprom etc.
3/5 AN626 - application note the - character is used to separate the product identifiers from the product options. table 5. field d, 8th and 9th characters (optional), operating speed (or product options) 30 parallel interface products 300 ns 25 250 ns 20 200 ns 18 180 ns 15 150 ns 12 120 ns 10 100 ns 90 90 ns etc. that is, for speeds less than 100 ns, the actual value is used xx serial and application specific memories maximum of two characters describing specific product options table 6. field e, 10th character, v cc range blank serial devices 4.5 v to 5.5 v v 3.0 v to 5.5 v w 2.5 v to 5.5 v r 1.8 v to 3.6 v blank parallel devices 4.5 v to 5.5 v w 2.7 v to 3.6 v
AN626 - application note 4/5 for complete details of the correct product number, and ordering codes, for a specific product, please con- tact your nearest st sales office or distributor, or the technical support centre at the electronic mail ad- dress given on the next page. table 7. field f, 11th and 12th characters, package (two letters used in every case) bn psdip8 standard bg pdip24 standard bs pdip28 standard ka plcc32 standard ns tsop28 standard nc tsop40 standard dw tssop8 dl tssop14 mn so8 narrow 0.150 mils mw so8 wide 0.200 mils ml so14 mj so14 wide ms so28 mg so24 table 8. field g, 13th character, temperature range 1 0 c to 70 c 3 -40 c to +125 c, with a certified reliability flow tailored for the automotive industry 5 -20 c to +85 c 6 -40 c to +85 c table 9. field h, 14th character, tape and reel packaging blank discrete packaging t tape and reel packaging
5/5 AN626 - application note if you have any questions or suggestions concerning the matters raised in this document, please send them to the following electronic mail address: apps.eeprom@st.com please remember to include your name, company, location, telephone number and fax number. information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. ? 1998 stmicroelectronics - all rights reserved the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. stmicroelectronics group of companies australia - brazil - china - france - germany - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapor e - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a.
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