Document
34AA02/34LC02
2-Kbit I2C Serial EEPROM Software Write-Protect
Device Selection Table
Part Number
VCC Range
34AA02 34LC02 Note 1:
1.7V-5.5V 2.2V-5.5V 100 kHz for VCC <1.8V.
Max. Clock Frequency 400 kHz(1) 1 MHz
Temp. Ranges
I, E I, E
Packages
MS, P. SN, OT, MNY, ST MS, P. SN, OT, MNY, ST
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 • Two-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: 5 ms, Maximum • 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 • RoHS Compliant • Available for Extended Temperature Ranges: - Industrial (I): -40°C to +85°C - Extended (E): -40°C to +125°C • Automotive AEC-Q100 Qualified
Packages
• 8-Lead MSOP, 8-Lead PDIP, 8-Lead SOIC, 6-Lead SOT-23, 8-Lead TDFN and 8-Lead TSSOP
Description
The Microchip Technology Inc. 34XX02(1) is a 2-Kbit Electrically Erasable PROM (EEPROM). 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 two-wire serial interface. Its 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.
Note 1: 34XX02 is used in this document as a generic part number for the 34AA02/34LC02 devices.
Package Types
MSOP/PDIP/SOIC/TSSOP
A0 1 A1 2
8 VCC 7 WP
A2 3
6 SCL
VSS 4
5 SDA
SOT-23
SCL 1
6 VCC
VSS 2
5 A0
SDA 3
4 A1
A0 1
A1 2 A2 3 VSS 4
TDFN
8 VCC
7 WP 6 SCL 5 SDA
2007-2023 Microchip Technology Inc. and its subsidiaries
DS20002029H-page 1
34AA02/34LC02
Block Diagram
A0 A1 A2
WP
I/O Control Logic
Memory Control Logic
XDEC
SDA SCL
Vcc Vss
HV Generator
Software writeprotected area
(00h-7Fh)
Standard Array
Write-Protect Circuitry YDEC
Sense Amp. R/W Control
DS20002029H-page 2
2007-2023 Microchip Technology Inc. and its subsidiaries
34AA02/34LC02
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings(†)
VCC............................................................................................................................................................................. 6.5V All inputs and outputs w.r.t. VSS ..........................................................................................................-0.3V to VCC +1.0V Storage temperature ............................................................................................................................... -65°C to +150°C Ambient temperature with power applied................................................................................................ -40°C to +125°C ESD protection on all pins 4 kV
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.
TABLE 1-1: DC SPECIFICATIONS
DC CHARACTERISTICS
Electrical Characteristics: Industrial (I): TA = -40°C to +85°C Extended (E): TA = -40°C to +125°C
Param. No.
Symbol
Characteristic
Min. Typical Max. Units
Conditions
D1
VIH High-Level Input Voltage 0.7 VCC —
—
V
D2
VIL Low-Level Input Voltage
—
—
0.3 VCC V 0.2 VCC for VCC < 2.5V
D3
VHYS
Hysteresis of Schmitt Trigger Inputs
0.05 Vcc —
—
V Note 1
D4
VOL Low-Level Output Voltage —
—
0.40
V IOL = 3.0 mA, VCC = 2.5V
7
—
10
V A0 Pin only, VCC < 2.2V
D5
VHV High-Voltage Detect
VCC + 4.8 —
10
V A0 Pin only, VCC 2.2V
10
— VCC + 4.8 V A0 Pin only, VCC 5.2V
D.