DS2502-E48 Maxim, DS2502-E48 Datasheet

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DS2502-E48

Manufacturer Part Number
DS2502-E48
Description
The DS2502-E48 is a variant of the DS2502 1024-bit add-only memory
Manufacturer
Maxim
Datasheet

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Part Number:
DS2502-E48+
Manufacturer:
Maxim Integrated
Quantity:
1 138
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
www.maxim-ic.com
FEATURES
 Factory programmed 48-bit node address
 Provides valid MAC-48/EUI-48 Ethernet
 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
DESCRIPTION
The DS2502-E48 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.
19-5071; 12/09
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
chip with 768 bits user-programmable OTP-
EPROM communicates with the economy of
one signal plus ground
address
registration number assures absolute
traceability because no two parts are alike
compatibility with other 1-Wire
additional data can be programmed into
EPROM without disturbing existing data
programming signals to a single pin
microprocessor and communicates at up to
16.3kbps
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
®
products
1 of 4
PIN CONFIGURATION
ORDERING INFORMATION
PART
DS2502-E48+
DS2502P-E48+
DS2502P-E48+T&R
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
48-Bit Node Address Chip
TSOC PACKAGE
BOTTOM VIEW
TOP VIEW
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TO-92
DS2502-E48
PIN-
PACKAGE
3 TO-92
6 TSOC
6 TSOC

DS2502-E48 Summary of contents

Page 1

... Maxim Integrated Products, Inc. DESCRIPTION The DS2502-E48 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-E48 as 48-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 0Dh 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-E48 ...

Page 4

REVISION HISTORY REVISION DATE Changed the Ordering Information to lead free. Included an explanation of “Default Data Structure” above Figure 1. Emphasized that the 16-bit CRC is inverted. 12/09 Deleted paragraph on how to set up a UniqueWare project. Inserted ...

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