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AT25640BN-SH-T

Description
SPI Serial EEPROMs 32K (4096 x 8) 64K (8192 x 8)
Categorystorage    storage   
File Size599KB,23 Pages
ManufacturerAtmel (Microchip)
Environmental Compliance
Download Datasheet Parametric View All

AT25640BN-SH-T Overview

SPI Serial EEPROMs 32K (4096 x 8) 64K (8192 x 8)

AT25640BN-SH-T Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerAtmel (Microchip)
Parts packaging codeSOIC
package instructionSOP,
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresIT CAN ALSO OPERATES WITH 2.7V-5.5V AND 4.5V-5.5V SUPPLY
Maximum clock frequency (fCLK)5 MHz
JESD-30 codeR-PDSO-G8
JESD-609 codee4
length4.9 mm
memory density32768 bi
Memory IC TypeEEPROM
memory width8
Number of functions1
Number of terminals8
word count4096 words
character code4000
Operating modeSYNCHRONOUS
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
organize4KX8
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Parallel/SerialSERIAL
Certification statusNot Qualified
Maximum seat height1.75 mm
Serial bus typeSPI
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1.8 V
Nominal supply voltage (Vsup)2.7 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceNickel/Palladium/Gold (Ni/Pd/Au)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
width3.9 mm
Maximum write cycle time (tWC)5 ms
Features
Serial Peripheral Interface (SPI) Compatible
Supports SPI Modes 0 (0,0) and 3 (1,1)
– Datasheet Describes Mode 0 Operation
Low-voltage and Standard-voltage Operation
– 1.8 (V
CC
= 1.8V to 5.5V)
20 MHz Clock Rate (5V)
32-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 (5 ms max)
High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
Automotive Devices Available
8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead
TSSOP and 8-lead Ultra Lead Frame Land Grid Array (ULA) Packages
Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers
SPI Serial
EEPROMs
32K (4096 x 8)
64K (8192 x 8)
AT25320B
AT25640B
Advance
Information
Description
The AT25320B/640B provides 32768/65536 bits of serial electrically-erasable pro-
grammable read-only memory (EEPROM) organized as 4096/8192 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 AT25320B/640B is
available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-
MAP (MLP 2x3),
8-lead Ultra Lead Frame Land Grid Array (ULA)
and 8-lead TSSOP
packages.
The AT25320B/640B 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 sepa-
rate erase cycle is required before write.
Table 0-1.
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
Pin Configuration
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
CS
SO
WP
GND
CS
SO
WP
GND
8-lead
PDIP
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8-lead
TSSOP
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8535B–SEEPR–7/08
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