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DS2505_07 Datasheet, PDF (1/24 Pages) Dallas Semiconductor – 16-kbit Add-Only Memory | |||
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www.maxim-ic.com
FEATURES
 16384 bits Electrically Programmable Read
Only Memory (EPROM) communicates with
the economy of one signal plus ground
 Unique, factory-lasered and tested 64-bit
registration number (8-bit family code +
48-bit serial number + 8-bit CRC tester)
assures absolute traceability because no two
parts are alike
 Built-in multidrop controller ensures
compatibility with other 1-Wire® Net
products
 EPROM partitioned into sixty-four 256-bit
pages for randomly accessing packetized data
records
 Each memory page can be permanently write-
protected to prevent tampering
 Device is an âadd onlyâ memory where
additional data can be programmed into
EPROM without disturbing existing data
 Architecture allows software to patch data by
superseding an old page in favor of a newly
programmed page
 Reduces control, address, data, power, and
programming signals to a single data pin
 Directly connects to a single port pin of a
microprocessor and communicates at up to
16.3 kbits per second
 8-bit family code specifies DS2505
communications requirements to reader
 Presence detector acknowledges when the
reader first applies voltage
 Low cost TO-92 or 6-pin TSOC surface
mount package
 Reads over a wide voltage range of 2.8V to
6.0V from -40°C to +85°C; programs at
11.5V to 12.0V from -40°C to +50°C
DS2505
16-kbit Add-Only Memory
PIN ASSIGNMENT
TO-92
DALLAS
DS2505
TSOC PACKAGE
GND 1
DATA 2
NC 3
6 NC
5 NC
4 NC
Top View
3.7 X 4.0 X 1.5 mm
Side View
See Mech.
Drawing Section
123
Bottom View
See Mech.
Drawings Section
NOTE: The leads of TO-92 packages on tape-
and-reel are formed to approximately 100 mil
(2.54 mm) spacing. For details refer to drawing
56-G0006-003.
ORDERING INFORMATION
DS2505
TO-92 Package
DS2505/T&R TO-92 Package, Tape & Reel
DS2505P
TSOC Package
DS2505P/T&R TSOC Package, Tape & Reel
DS2505+
TO-92 Package
DS2505+T&R TO-92 Package, Tape & Reel
DS2505P+
TSOC Package
DS2505P+T&R TSOC Package, Tape & Reel
+ Indicates lead-free compliance.
1-Wire is a registered trademark of Dallas Semiconductor.
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