AT24HC02B_09 Datasheet, PDF (1/17 Pages) ATMEL Corporation – Two-wire Automotive Temperature Serial EEPROM

1. Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02B/04B
• Medium-voltage and Standard-voltage Operation
– 2.5 (V_CC = 2.5V to 5.5V)
• Automotive Temperature Range –40°C to 125°C
• 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 (2.5V) Compatibility
• Write Protect Pin for Hardware Data Protection
• 8-byte Page (2k), 16-byte Page (4k) Write Modes
• Partial Page Writes are Allowed
• Self-timed Write Cycle (5 ms max)
• High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
• 8-lead JEDEC SOIC and 8-lead TSSOP Packages
Two-wire
Automotive
Temperature
Serial EEPROM
2K (256 x 8)
4k (512 x 8)
2. Description
The AT24HC02B/04B 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 AT24HC02B/04B is available in space-sav-
ing 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 2.5V (2.5V to 5.5V)
versions.
AT24HC02B
AT24HC04B
Table 2-1.
Pin Name
A0 − A2
SDA
SCL
WP
NC
Pin Configurations
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
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
5192C–SEEPR–01/09