DS28E15 データシートの表示（PDF） - Maxim Integrated
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DS28E15 Datasheet PDF : 6 Pages
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ABRIDGED DATA SHEET
DS28E15
1-Wire SHA-256 Secure Authenticator
with 512-Bit User EEPROM
ELECTRICAL CHARACTERISTICS (continued)
(TA = -40NC to +85NC, unless otherwise noted.) (Note 1)
Note 24: EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated tem-
peratures is not recommended.
Note 25: Refer to the full data sheet.
Pin Configurations
TOP VIEW
+
GND 1
IO 2
N.C. 3
DS28E15
TSOC
TOP VIEW
6 N.C.
5 N.C.
4 N.C.
+
N.C. 1
DS28E15
IO 2
GND 3 *EP
*EXPOSED PAD
TDFN-EP
(3mm × 3mm)
BOTTOM VIEW
6 N.C.
5 N.C.
DS2431GA
4 N.C.
GND
2
IO
1
SFN
(3.5mm × 6.5mm × 0.75mm)
NOTE: THE SFN PACKAGE IS QUALIFIED FOR ELECTRO-
MECHANICAL CONTACT APPLICATIONS ONLY, NOT FOR
SOLDERING. FOR MORE INFORMATION, REFER TO
APPLICATION NOTE 4132: ATTACHMENT METHODS FOR
THE ELECTRO-MECHANICAL SFN PACKAGE.
Pin Descriptions
SFN
—
1
2
PIN
TDFN-EP
1, 4, 5, 6
2
3
TSOC
3– 6
2
1
—
—
—
NAME
FUNCTION
N.C.
IO
GND
EP
Not Connected
1-Wire Bus Interface. Open-drain signal that requires an external pullup resistor.
Ground Reference
Exposed Pad (TDFN Only). Solder evenly to the board’s ground plane for proper
operation. Refer to Application Note 3273: Exposed Pads: A Brief Introduction for
additional information.
4
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