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Atmel Electronic Components Datasheet

AT25010 Datasheet

SPI Serial EEPROMs

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Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
Low-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
3.0 MHz Clock Rate (5V)
8-byte Page Mode
Block Write Protection
– Protect 1/4, 1/2, or Entire Array
Write Protect (WP) Pin and Write Disable Instructions for
Both Hardware and Software Data Protection
Self-timed Write Cycle (10 ms max)
High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
Automotive Grade Devices Available
8-lead PDIP and 8-lead JEDEC SOIC Packages
Description
The AT25010/020/040 provides 1024/2048/4096 bits of serial electrically erasable
programmable read only memory (EEPROM) organized as 128/256/512 words of 8
bits each. The device is optimized for use in many industrial and commercial applica-
tions where low-power and low voltage operation are essential. The AT25010/020/040
is available in space saving 8-lead PDIP and 8-lead JEDEC SOIC packages.
The AT25010/020/040 is enabled through the Chip Select pin (CS) and accessed via a
3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and
Serial Clock (SCK). All programming cycles are completely self-timed, and no sepa-
rate ERASE cycle is required before WRITE.
BLOCK WRITE protection is enabled by programming the status register with one of
four blocks of write protection. Separate program enable and program disable instruc-
tions are provided for additional data protection. Hardware data protection is provided
via the WP pin to protect against inadvertent write attempts. The HOLD pin may be
used to suspend any serial communication without resetting the serial sequence.
Pin Configurations
Pin Name
CS
SCK
Function
Chip Select
Serial Data Clock
SI
SO
GND
VCC
Serial Data Input
Serial Data Output
Ground
Power Supply
WP
HOLD
Write Protect
Suspends Serial Input
8-lead PDIP
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
8-lead SOIC
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
SPI Serial
EEPROMs
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
AT25010
AT25020
AT25040
Rev. 0606M–SEEPR–06/03
1


Atmel Electronic Components Datasheet

AT25010 Datasheet

SPI Serial EEPROMs

No Preview Available !

Absolute Maximum Ratings*
Operating Temperature................................. -55°C to + 125°C
Storage Temperature .................................... -65°C to + 150°C
Voltage on Any Pin
with Respect to Ground ....................................-1.0V to + 7.0V
Maximum Operating Voltage .......................................... 6.25V
DC Output Current........................................................ 5.0 mA
Block Diagram
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
2 AT25010/020/040
0606M–SEEPR–06/03


Part Number AT25010
Description SPI Serial EEPROMs
Maker ATMEL Corporation
Total Page 17 Pages
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