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25AA320A Datasheet(Hoja de datos) 1 Page - Microchip Technology

No. de Pieza. 25AA320A
Descripción  32K SPI Bus Serial EEPROM
Descarga  26 Pages
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Fabricante  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
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© 2007 Microchip Technology Inc.
DS21828C-page 1
25AA320A/25LC320A
Device Selection Table
Features:
• Max. clock 10 MHz
• Low-power CMOS technology
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 5
μA at 5.5V
• 4096 x 8-bit organization
• 32 byte page
• Self-timed erase and write cycles (5 ms max.)
• Block write protection
- Protect none, 1/4, 1/2 or all of array
• Built-in write protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• Sequential read
• High reliability
- Endurance: >1M erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
• Temperature ranges supported;
• Standard and Pb-free packages available
Pin Function Table
Description:
The Microchip Technology Inc. 25AA320A/25LC320A
(25XX320A*) are 32k-bit Serial Electrically Erasable
PROMs. The memory is accessed via a simple Serial
Peripheral Interface (SPI) compatible serial bus. The
bus signals required are a clock input (SCK) plus sep-
arate data in (SI) and data out (SO) lines. Access to the
device is controlled through a Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25XX320A is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead MSOP, and 8-lead TSSOP.
All packages are Pb-free.
Package Types (not to scale)
Part Number
VCC Range
Page Size
Temp. Ranges
Packages
25LC320A
2.5-5.5V
32 Byte
I,E
P, SN, ST, MS
25AA320A
1.8-5.5V
32 Byte
I
P, SN, ST, MS
- Industrial (I):
-40
°Cto +85°C
- Automotive (E):
-40°C to +125°C
Name
Function
CS
Chip Select Input
SO
Serial Data Output
WP
Write-Protect
VSS
Ground
SI
Serial Data Input
SCK
Serial Clock Input
HOLD
Hold Input
VCC
Supply Voltage
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
PDIP/SOIC
(P, SN)
TSSOP/MSOP
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
(ST, MS)
32K SPI Bus Serial EEPROM
*25XX320A is used in this document as a generic part number
for the 25AA320A, 25LC320A devices.




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