AT25010 ATMEL Corporation, AT25010 Datasheet
AT25010
Manufacturer Part Number
AT25010
Description
SPI Serial EEPROMs
Manufacturer
ATMEL Corporation
Datasheet
1.AT25010.pdf
(15 pages)
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Features
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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-pin PDIP and 8-pin 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
SI
SO
GND
VCC
WP
HOLD
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0(0,0) and 3(1,1)
Low-Voltage and Standard-Voltage Operation
2.1 MHz Clock Rate (5V) Compatibility
8-Byte Page Mode
Block Write Protection
Write Protect (WP) Pin and Write Disable Instructions for
Both Hardware and Software Data Protection
Self-Timed Write Cycle (10 ms Max)
High Reliability
Automotive Grade and Extended Temperature Devices Available
8-Pin PDIP and JEDEC SOIC Packages
– 5.0 (V
– 2.7 (V
– 1.8 (V
– Protect 1/4, 1/2, or Entire Array
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
– ESD Protection: >4000V
CC
CC
CC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
= 4.5V to 5.5V)
= 2.7V to 5.5V)
= 1.8V to 3.6V)
GND
WP
CS
SO
GND
WP
CS
SO
1
2
3
4
8-Pin SOIC
8-Pin PDIP
1
2
3
4
8
7
6
5
8
7
6
5
VCC
HOLD
SCK
SI
VCC
HOLD
SCK
SI
SPI Serial
EEPROMs
1K (128 x 8)
2K (256 x 8)
4K (512 x 8)
AT25010
AT25020
AT25040
SPI, 1K Serial
E
2
PROM
Rev. 0606E–08/98
1
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