Rainbow Electronics AT24C512 User Manual
Wire serial eeprom, Features, Description

1
Features
•
Low-voltage and Standard-voltage Operation
– 2.7 (V
CC
= 2.7V to 5.5V)
– 1.8 (V
CC
= 1.8V to 3.6V)
•
Internally Organized 65,536 x 8
•
2-wire Serial Interface
•
Schmitt Triggers, Filtered Inputs for Noise Suppression
•
Bidirectional Data Transfer Protocol
•
1 MHz (5V), 400 kHz (2.7V) and 100 kHz (1.8V) Compatibility
•
Write Protect Pin for Hardware and Software Data Protection
•
128-byte Page Write Mode (Partial Page Writes Allowed)
•
Self-timed Write Cycle (5 ms Typical)
•
High Reliability
– Endurance: 100,000 Write Cycles
– Data Retention: 40 Years
•
Automotive Grade and Extended Temperature Devices Available
•
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead LAP and 8-ball dBGA
TM
Packages
Description
The AT24C512 provides 524,288 bits of serial electrically erasable and programmable
read only memory (EEPROM) organized as 65,536 words of 8 bits each. The device’s
cascadable feature allows up to 4 devices to share a common 2-wire bus. The device
is optimized for use in many industrial and commercial applications where low-power
and low-voltage operation are essential. The devices are available in space-saving
8-pin PDIP, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead Leadless Array (LAP) and 8-
ball dBGA packages. In addition, the entire family is available in 2.7V (2.7V to 5.5V)
and 1.8V (1.8V to 3.6V) versions.
Rev. 1116H–SEEPR–08/02
2-wire Serial
EEPROM
512K (65,536 x 8)
AT24C512
Pin Configurations
Pin Name
Function
A0 - A1
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No Connect
8-lead PDIP
1
2
3
4
8
7
6
5
A0
A1
NC
GND
VCC
WP
SCL
SDA
8-lead Leadless Array
Bottom View
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
NC
GND
8-lead TSSOP
1
2
3
4
8
7
6
5
A0
A1
NC
GND
VCC
WP
SCL
SDA
8-ball dBGA
Bottom View
VCC
WP
SCL
SDA
A0
A1
NC
GND
1
2
3
4
8
7
6
5
8-lead SOIC
1
2
3
4
8
7
6
5
A0
A1
NC
GND
VCC
WP
SCL
SDA
Document Outline
- Features
- Description
- Block Diagram
- Pin Description
- Memory Organization
- Device Operation
- Bus Timing (SCL: Serial Clock, SDA: Serial Data I/O)
- Write Cycle Timing (SCL: Serial Clock, SDA: Serial Data I/O)
- Data Validity
- Start and Stop Definition
- Output Acknowledge
- Device Addressing
- Write Operations
- Read Operations
- Packaging Information