AT24C02A_14 Datasheet, PDF (1/16 Pages) ATMEL Corporation – Write Protect Pin for Hardware Data Protection

Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02A/04A
• Standard-voltage Operation
– 2.7 (V_CC = 2.7V to 5.5V)
• Internally Organized 256 x 8 (2K), 512 x 8 (4K)
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 400 kHz Clock Rate
• 8-byte Page (2K), 16-byte Page (4K) Write Modes
• Partial Page Writes Allowed
• Self-timed Write Cycle (5 ms Max)
• High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
• Lead-Free/Halogen-Free Devices Available
• 8-lead JEDEC SOIC and 8-lead TSSOP Packages
Description
The AT24C02A/04A provides 2048/4096 bits of serial electrically erasable and pro-
grammable read-only memory (EEPROM) organized as 256/512 words of 8 bits each.
The device is optimized for use in many automotive applications where low-power and
low-voltage operation are essential. The AT24C02A/04A is available in space-saving
8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a two-wire
serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) version.
Table 1. Pin Configurations
Pin Name
Function
A0–A2
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No-connect
8-lead SOIC
A0 1
A1 2
A2 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
8-lead TSSOP
A0 1
A1 2
A2 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
Two-wire
Automotive
Temperature
Serial
EEPROM
2K (256 x 8)
4K (512 x 8)
AT24C02A⁽¹⁾
AT24C04A
Note:
1. AT24C02A not recom-
mended for new
design; please refer to
the AT24HC02B Auto-
motive datasheet.
5083D–SEEPR–4/07
1