DS2502-E64 Maxim, DS2502-E64 Datasheet

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DS2502-E64

Manufacturer Part Number
DS2502-E64
Description
The DS2502-E64 is a variant of the DS2502 1024-bit Add-Only Memory
Manufacturer
Maxim
Datasheet

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Part Number:
DS2502-E64
Manufacturer:
Maxim Integrated
Quantity:
213
Part Number:
DS2502-E64+
Manufacturer:
Maxim Integrated
Quantity:
513
FEATURES
 IEEE-approved factory programmed 64-bit
 Meets the node identification requirements of
 Unique, factory-lasered and tested 64-bit
 Built-in multidrop controller ensures
 Device is an “add only” memory where
 Reduces control, address, data, power and
 Directly connects to a single port pin of a
 Presence detector acknowledges when reader
 Low cost TO-92 or TSOC surface mount
 Reads over a wide voltage range of 2.8V to
3 2 1
DESCRIPTION
The DS2502-E64 is a variant of the DS2502 1024-bit Add-Only Memory. It differs from the standard
DS2502 in its custom ROM family code 89h, and the UniqueWare Identifier 5E7h in place of the upper
12 bits of the standard ROM serialization field. Otherwise, the electrical and logical behavior is identical
to that of the DS2502. For technical details please refer to the DS2502 data sheet.
www.maxim-ic.com
19-5072; 12/09
node address chip (EUI-64) with 768 bits
user-programmable OTP-EPROM
communicates with the economy of one
signal plus ground
IEEE Standard 1394-1995 (FireWire
registration number assures absolute
traceability because no two parts are alike
compatibility with other 1-Wire products
additional data can be programmed into
EPROM without disturbing existing data
programming signals to a single pin
microprocessor and communicates at up to
16.3k bits per second
first applies voltage
packages
6.0V from -40°C to +85°C; programs at
11.5V to 12.0V from -40°C to +50°C
)
1 of 4
IEEE EUI-64 Node Address Chip
PIN ASSIGNMENT
ORDERING INFORMATION
PART
DS2502-E64+
DS2502P-E64+
+ Denotes a lead(Pb)-free/RoHS-compliant package.
FireWire
BOTTOM VIEW
TM
DS2502-E64
YYWWRR
1
TO-92
CCCCCC
is a trademark of Apple Computer, Inc.
2 3
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
YYWW = DATE CODE
RR = DIE REVISION CODE
CCCCCC = COUNTRY CODE
THE DOT MARKS PIN 1
TSOC PACKAGE
SIDE VIEW
TOP VIEW
DS2502-E64
E 6 4
2 5 0 2
YYWW
PIN-
PACKAGE
3 TO-92
6 TSOC

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DS2502-E64 Summary of contents

Page 1

... DESCRIPTION The DS2502-E64 is a variant of the DS2502 1024-bit Add-Only Memory. It differs from the standard DS2502 in its custom ROM family code 89h, and the UniqueWare Identifier 5E7h in place of the upper 12 bits of the standard ROM serialization field. Otherwise, the electrical and logical behavior is identical to that of the DS2502 ...

Page 2

... MOST SIGNIFICANT BIT This information is stored in the DS2502-E64 as 64-bit number with the least significant byte at the lower address. Including the length byte and the inverted CRC, the complete set of data is shown in Figure 3. Figure 3. PHYSICAL ADDRESS AND DATA MAPPING INSIDE THE DEVICE ...

Page 3

... The contents of the memory address range 0Fh to 1Fh is FFh. These cells cannot be altered since the whole memory page is write-protected. The memory range from 20h to 7Fh, however, is user- programmable. It can be write-protected by programming the corresponding write-protect bit in the status memory of the DS2502-E64 ...

Page 4

... Included an explanation of “Default Data Structure” above Figure 1. Emphasized that the 16-bit CRC is inverted. 12/09 Inserted actual CRC value to Figure 3. Reformatted Figures Removed reference to the Book of iButton Standards. Changed notation of hexadecimal numbers from DESCRIPTION DS2502-E64 PAGES CHANGED ...

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