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PDF AT25320 Data sheet ( Hoja de datos )
| Número de pieza | AT25320 | |
| Descripción | SPI Serial EEPROMs | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AT25320 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
• Low-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)
• 3.0 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 Typical)
• High-reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
• Automotive Grade Devices Available
• 8-lead PDIP, 8-lead JEDEC SOIC and 14-lead TSSOP Packages
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
are essential. The AT25080/160/320/640 is available in space saving 8-lead PDIP, 8-
lead JEDEC SOIC and 14-lead TSSOP packages.
The AT25080/160/320/640 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.
SPI Serial
EEPROMs
8K (1024 x 8)
16K (2048 x 8)
32K (4096 x 8)
64K (8192 x 8)
AT25080
AT25160
AT25320
AT25640
Pin Configuration
Pin Name
CS
Function
Chip Select
SCK
SI
SO
Serial Data Clock
Serial Data Input
Serial Data Output
GND
VCC
WP
HOLD
Ground
Power Supply
Write Protect
Suspends Serial Input
NC No Connect
DC Don’t Connect
8-lead PDIP
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
8-lead SOIC
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
14-lead TSSOP
CS
SO
NC
NC
NC
WP
GND
1
2
3
4
5
6
7
14 VCC
13 HOLD
12 NC
11 NC
10 NC
9 SCK
8 SI
0675M–SEEPR–9/03
1
1 page  
AT25080/160/320/640
AC Characteristics (Continued)
Applicable over recommended operating range from TAI = -40°C to +85°C, VCC = As Specified, CL = 1 TTL Gate and
100 pF (unless otherwise noted).
Symbol
Parameter
Voltage
Min
Max Units
tLZ Hold to Output Low Z
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
0
0
0
100
100 ns
100
tHZ Hold to Output High Z
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
100
100 ns
100
tDIS Output Disable Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
250
250
1000
ns
tWC Write Cycle Time
4.5 - 5.5
2.7 - 5.5
1.8 - 5.5
Endurance(1) 5.0V, 25°C, Page Mode
Note: 1. This parameter is characterized and is not 100% tested.
1M
5
10 ms
20
Write Cycles
0675M–SEEPR–9/03
5
5 Page 
Timing Diagrams
Synchronous Data Timing (for Mode 0)
CS
SCK
VIH
VIL
tCSS
VIH
VIL
VIH
SI
VIL
tWH
tSU
VALID IN
tH
VOH
SO
VOL
HI-Z
WREN Timing
AT25080/160/320/640
tWL
tV
tCS
tCSH
tHO tDIS
HI-Z
WRDI Timing
0675M–SEEPR–9/03
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AT25320.PDF ] | |
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