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34AA02 Datasheet PDF

34AA02
Microchip Technology

Part Number 34AA02
Description 2K I2C Serial EEPROM Software Write-Protect
Page 30 Pages
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34AA02/34LC02
2K I2CSerial EEPROM Software Write-Protect
Features:
• Permanent and Resettable Software Write-Protect
for Lower Half of the Array (00h-7Fh)
• Single Supply with Operation Down to 1.7V
• Low-Power CMOS Technology:
- Read current 1 mA, typical
- Standby current, 100 nA, typical
• 2-Wire Serial Interface Bus, I2C™ Compatible
• Cascadable up to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Compatibility
• 1 MHz Clock for LC Versions
• Page Write Time 3 ms, typical
• Self-Timed Erase/Write Cycle
• 16-Byte Page Write Buffer
• ESD Protection > 4,000V
• Software Write Protection for Lower 128 Bytes
• Hardware Write Protection for Entire Array
• More than 1 Million Erase/Write Cycles
• Data Retention > 200 Years
• 8-Lead PDIP, SOIC, TSSOP, MSOP and TDFN
Packages
• 6-Lead SOT-23 Package
• Pb-free and RoHS Compliant
• Available for Extended Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Device Selection Table
Part
Number
VCC
Range
Max. Clock
Frequency
34AA02
34LC02
1.7-5.5
2.2-5.5
400 kHz(1)
1 MHz
Note 1: 100 kHz for VCC <1.8V.
Temp
Ranges
I,E
I,E
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Package Types
PDIP/SOIC/TSSOP/MSOP/TDFN
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SOT-23
SCL 1
VSS 2
SDA 3
6 VCC
5 A0
4 A1
Description:
The Microchip Technology Inc. 34AA02/34LC02
(34XX02*) is a 2 Kbit Electrically Erasable PROM
capable of operation across a broad voltage range
(1.7V to 5.5V). This device has two software write-
protect features for the lower half of the array, as well
as an external pin that can be used to write-protect the
entire array. This allows the system designer to protect
none, half, or all of the array, depending on the
application. The device is organized as one block of
256 x 8-bit memory with a 2-wire serial interface. Low-
voltage design permits operation down to 1.7V, with
standby and active currents of only 100 nA and 1 mA,
respectively. The 34XX02 also has a page write
capability for up to 16 bytes of data. The 34XX02 is
available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, MSOP and TDFN packages. The
34XX02 is also available in the 6-lead, SOT-23
package.
*34XX02 is used in this document as a generic part number
for the 34AA02/34LC02 devices.
2011 Microchip Technology Inc.
DS22029F-page 1

















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