Service Manuals, User Guides, Schematic Diagrams or docs for : Dell Charger DS2502

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                                                                                                     19-5075; Rev 12/11




                                                                                   DS2502
                                                                      1Kb Add-Only Memory
FEATURES                                                      PIN ASSIGNMENT
   1024 bits Electrically Programmable Read
                                                                           TO-92               NC     1        8        NC
   Only Memory (EPROM) communicates with
                                                                           DS2502              NC     2        7        NC
   the economy of one signal plus ground
   Unique, factory-lasered and tested 64-bit                                                  DATA    3        6        NC

   registration number (8-bit family code + 48-                                               GND     4        5        NC

   bit serial number + 8-bit CRC tester) assures
                                                                                               8-PIN SO (150 MIL)
   absolute traceability because no two parts are
   alike                                                                                        TSOC PACKAGE
   Built-in multidrop controller ensures                                                       GND     1       6    NC
   compatibility with other MicroLAN products                                                 DATA     2       5    NC
   EPROM partitioned into four 256-bit pages                                                    NC     3       4    NC
   for randomly accessing packetized data                                                             TOP VIEW
   Each memory page can be permanently




                                                                                     NC
                                                                        GND

                                                                              DATA
                                                                                                 SOT-23 Package
   write-protected to prevent tampering                                                                Top View
   Device is an "add only" memory where
                                                                                                                3
   additional data can be programmed into
   EPROM without disturbing existing data
                                                                           1 2 3                       09rr
   Architecture allows software to patch data by
   superseding an old page in favor of a newly                                                             1        2

   programmed page                                                 BOTTOM VIEW                   1 = DATA; 2, 3 = GND
                                                                                                 "rr" = Revision
   Reduces control, address, data, power, and
   programming signals to a single data pin                                                     Flip Chip, Top View
   Directly connects to a single port pin of a                                                  with Laser Mark,

   microprocessor and communicates at up to                             09rrd                   Contacts Not Visible.
                                                                                                "rrd" = Revision/Date
   16.3 kbits per second                                                                        1 = DATA
                                                                       1              2         2 = GND
   8-bit family code specifies DS2502
   communications requirements to reader                                       1          2
   Presence detector acknowledges when the                                                                SFN PINOUT:
   reader first applies voltage                                                                           PIN 1: IO
   Low cost TO-92, SFN, or 8-pin SO, SOT-23                                                               PIN 2: GND
   (3-pin), TSOC and flip chip surface mount
   package                                                                 BOTTOM VIEW         SIDE VIEW
   Reads over a wide voltage range of 2.8V to                        SFN (APPROX. 6.0mm x 6.0mm x 0.9mm)
   6.0V from -40

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