Serial EEPROM. AT24C64B Datasheet

AT24C64B EEPROM. Datasheet pdf. Equivalent


Part AT24C64B
Description Serial EEPROM
Feature AT24C64B I²C-Compatible (Two-Wire) Serial EEPROM 64-Kbit (8,192 x 8) Features • Low-Voltage and Stan.
Manufacture Microchip
Datasheet
Download AT24C64B Datasheet


AT24C64B I2C-Compatible (2-Wire) Serial EEPROM 64K (8192 x 8 AT24C64B Datasheet
AT24C64B I²C-Compatible (Two-Wire) Serial EEPROM 64-Kbit (8, AT24C64B Datasheet
Recommendation Recommendation Datasheet AT24C64B Datasheet




AT24C64B
AT24C64B
I²C-Compatible (Two-Wire) Serial EEPROM 64-Kbit
(8,192 x 8)
Features
• Low-Voltage and Standard Voltage Operation:
– 1.8V (VCC = 1.8V to 5.5V)
– 2.7V (VCC = 2.7V to 5.5V)
• Internally Organized as 8,192 x 8 (64K)
• Industrial Temperature Range: -40°C to +85°C
• I2C-Compatible (Two-Wire) Serial Interface:
– 100 kHz Standard mode, 1.8V to 5.5V
– 400 kHz Fast mode, 1.8V to 5.5V
• Schmitt Triggers, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• Write-Protect Pin for Upper 16 Kb Quadrant Hardware Data Protection
• Ultra Low Active Current (3 mA maximum) and Standby Current (6 µA maximum)
• 32-byte Page Write Mode:
– Partial page writes allowed
• Random and Sequential Read Modes
• Self-Timed Write Cycle within 5 ms Maximum
• High Reliability:
– Endurance: 1,000,000 write cycles
– Data retention: 100 years
• Green Package Options (Lead-free/Halide-free/RoHS compliant)
• Die Sale Options: Wafer Form and Bumped Wafers
Packages
• 8-lead SOIC and 8-lead TSSOP
© 2019 Microchip Technology Inc.
20006188A-page 1



AT24C64B
AT24C64B
Table of Contents
Features.......................................................................................................................... 1
Packages.........................................................................................................................1
1. Package Types (not to scale).................................................................................... 4
2. Pin Descriptions.........................................................................................................5
2.1. Device Address Inputs (A0, A1, A2).............................................................................................5
2.2. Ground......................................................................................................................................... 5
2.3. Serial Data (SDA).........................................................................................................................5
2.4. Serial Clock (SCL)........................................................................................................................5
2.5. Write-Protect (WP)....................................................................................................................... 6
2.6. Device Power Supply................................................................................................................... 6
3. Description.................................................................................................................7
3.1. System Configuration Using Two-Wire Serial EEPROMs ........................................................... 7
3.2. Block Diagram.............................................................................................................................. 8
4. Electrical Characteristics........................................................................................... 9
4.1. Absolute Maximum Ratings..........................................................................................................9
4.2. DC and AC Operating Range.......................................................................................................9
4.3. DC Characteristics....................................................................................................................... 9
4.4. AC Characteristics......................................................................................................................10
4.5. Electrical Specifications..............................................................................................................11
5. Device Operation and Communication....................................................................13
5.1. Clock and Data Transition Requirements...................................................................................13
5.2. Start and Stop Conditions.......................................................................................................... 13
5.3. Acknowledge and No-Acknowledge...........................................................................................14
5.4. Standby Mode............................................................................................................................ 14
5.5. Software Reset...........................................................................................................................15
6. Memory Organization.............................................................................................. 16
6.1. Device Addressing..................................................................................................................... 16
7. Write Operations......................................................................................................18
7.1. Byte Write...................................................................................................................................18
7.2. Page Write..................................................................................................................................18
7.3. Acknowledge Polling.................................................................................................................. 19
7.4. Write Cycle Timing..................................................................................................................... 20
7.5. Write Protection..........................................................................................................................20
8. Read Operations..................................................................................................... 21
8.1. Current Address Read................................................................................................................21
8.2. Random Read............................................................................................................................ 21
© 2019 Microchip Technology Inc.
20006188A-page 2







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