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AT25640 Datasheet

  • AT25640

  • SPI Serial CMOS

  • 48.72KB

  • Atmel   Atmel

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Features
鈥?/div>
Serial Peripheral Interface (SPI) Compatible
鈥?/div>
Supports SPI Modes 0 (0,0) and 3 (1,1)
鈥?/div>
Low Voltage and Standard Voltage Operation
鈥?5.0 (V
CC
= 4.5V to 5.5V)
鈥?2.7 (V
CC
= 2.7V to 5.5V)
鈥?1.8 (V
CC
= 1.8V to 3.6V)
2.1 MHz Clock Rate
32-Byte Page Mode
Block Write Protection
鈥?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 Typical)
High Reliability
鈥?Endurance: 1 Million Write Cycles
鈥?Data Retention: 100 Years
鈥?ESD Protection: >4000V
Automotive Grade and Extended Temperature Devices Available
8-Pin PDIP, JEDEC SOIC, and 14-Pin and 20-Pin TSSOP Packages
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
SPI Serial
EEPROMs
8K (1024 x 8)
16K (2048 x 8)
32K (4096 x 8)
64K (8192 x 8)
鈥?/div>
鈥?/div>
Description
The AT25080/160/320/640 provides 8192/16384/32768/65536 bits of serial electri-
cally erasable programmable read only memory (EEPROM) organized as
1024/2048/4096/8192 words of 8 bits each. The device is optimized for use in many
industrial and commercial applications where low power and low voltage operation
(continued)
AT25080
AT25160
AT25320
AT25640
Pin Configuration
Pin Name
CS
SCK
SI
SO
GND
V
CC
WP
HOLD
NC
DC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
No Connect
Don鈥檛 Connect
14-Lead TSSOP
CS
SO
NC
NC
NC
WP
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
HOLD
NC
NC
NC
SCK
SI
8-Pin PDIP
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
CS
SO
WP
GND
8-Pin SOIC
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
20-Lead TSSOP*
NC
CS
SO
SO
NC
NC
WP
GND
DC
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
VCC
HOLD
HOLD
NC
NC
SCK
SI
DC
NC
Rev. 0675C鈥?8/98
*Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.
1

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