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Atmel Electronic Components Datasheet

AT25040B Datasheet

SPI Serial EEPROM

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AT25010B, AT25020B, AT25040B
SPI Serial EEPROM
1K (128x8), 2K (256x8), 4K (512x8)
DATASHEET
Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
̶ Data Sheet Describes Mode 0 Operation
Low-voltage and Standard-voltage Operation
̶ VCC = 1.8V to 5.5V
20MHz 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 (5ms max)
High Reliability
̶ Endurance: 1,000,000 Write Cycles
̶ Data Retention: 100 Years
Green (Pb/Halogen-free/RoHS Compliant) Packaging Options
Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers
Description
The Atmel® AT25010B/020B/040B provides 1,024/2,048/4,096 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 applications where low-power and low-voltage
operation are essential. The AT25010B/020B/040B is available in space saving,
JEDEC SOIC, UDFN, TSSOP, XDFN, and VFBGA packages.
The AT25010B/020B/040B 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 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.
Atmel-8707F-SEEPROM-AT25010B-020B-040B-Datasheet_012015


Atmel Electronic Components Datasheet

AT25040B Datasheet

SPI Serial EEPROM

No Preview Available !

1. Pin Configurations
Table 1-1. Pin Configurations
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
CS
SO
WP
GND
8-lead SOIC
18
27
36
45
Top View
VCC
HOLD
SCK
SI
CS
SO
WP
GND
8-lead TSSOP
18
27
36
45
Top View
VCC
HOLD
SCK
SI
8-pad UDFN/XDFN
VCC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
8-ball VFBGA
VCC
HOLD
SCK
SI
8
7
6
5
1 CS
2 SO
3 WP
4 GND
Bottom View
Note: Drawings are not to scale.
2. Absolute Maximum Ratings*
Operating Temperature . . . . . . . . . . -40C to + 125C
Storage Temperature . . . . . . . . . . . . -65C to + 150C
Voltage on any pin
with respect to ground . . . . . . . . . . . . . . . . -1V to + 7V
Maximum Operating Voltage . . . . . . . . . . . . . . . 6.25V
DC Output Current . . . . . . . . . . . . . . . . . . . . . . . . 5mA
*Notice: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage 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 AT25010B/020B/040B [DATASHEET]
Atmel-8707F-SEEPROM-AT25010B-020B-040B-Datasheet_012015


Part Number AT25040B
Description SPI Serial EEPROM
Maker ATMEL
Total Page 23 Pages
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