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Atmel Electronic Components Datasheet

AT25010A Datasheet

(AT25010A - AT25040A) SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K

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Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
– Data Sheet Describes Mode 0 Operation
Medium-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
Extended Temperature Range 40°C to +125°C
5.0 MHz Clock Rate
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
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead TSSOP Packages
Description
The AT25010A/020A/040A provides 1024/2048/4096 bits of serial electrically-eras-
able programmable read-only memory (EEPROM) organized as 128/256/512 words of
8 bits each. The device is optimized for use in many automotive applications where
low-power and low-voltage operation are essential. The AT25010A/020A/040A is
available in space-saving 8-pin PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP
packages.
The AT25010A/020A/040A is enabled through the Chip Select pin (CS) and accessed
via a three-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
separate 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 instructions
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.
Table 1. Pin Configurations
8-lead PDIP
Pin Name
CS
SCK
Function
Chip Select
Serial Data Clock
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
SI
SO
GND
VCC
WP
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
8-lead SOIC
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
HOLD
Suspends Serial Input
8-lead TSSOP
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
SPI Serial
Extended
Temperature
EEPROMs
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
AT25010A
AT25020A
AT25040A
5087B–SEEPR–1/05
1


Atmel Electronic Components Datasheet

AT25010A Datasheet

(AT25010A - AT25040A) SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K

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
*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.
Figure 1. Block Diagram
128/256/
512 x 8
2 AT25010A/020A/040A
5087B–SEEPR–1/05


Part Number AT25010A
Description (AT25010A - AT25040A) SPI Serial Extended TEMPERATURE EEPROMS 1K 2K 4K
Maker ATMEL Corporation
Total Page 18 Pages
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