Features
• Write Protect Pin for Hardware Data Protection
– Utilizes Different Array Protection Compared to the AT24C02/04
• Low-voltage and Standard-voltage Operation
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– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V 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
100 kHz (1.8V) and 400 kHz (2.5V, 2.7V, 5V) 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
Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free Devices
Available
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead TSSOP and 8-ball dBGA2 Packages
Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers.
Description
Two-wire Serial
EEPROM
2K (256 x 8)
4K (512 x 8)
AT24C02A
AT24C04A
The AT24C02A/04A provides 2048/4096 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 256/512 words of 8 bits each. The
device is optimized for use in many industrial and commercial applications where lowpower and low-voltage operation are essential. The AT24C02A/04A is available in
space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP 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) and 1.8V (1.8V to 5.5V) versions.
Table 1. Pin Configuration
Pin Name
Function
A0–A2
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No-connect
8-lead PDIP
8-lead TSSOP
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
A2
GND
8
7
6
5
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
8-lead SOIC
8-lead MAP
VCC
WP
SCL
SDA
1
2
3
4
A0
A1
A2
GND
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Bottom View
8-ball dBGA2
VCC
WP
SCL
SDA
8
7
6
5
1
2
3
4
A0
A1
A2
GND
Bottom View
Rev. 0976Q–SEEPR–8/05
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