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1. Describe
Atmel® AT24C04C-PUM and AT24C08C provide 4,096/8,192-bit serial Electrically erasable programmable read-only memory (EEPROM) Organized into 512/1024 words, each word has 8 bits. This device has been optimized for Many industrial and commercial applications, among which low power and low voltage Operation is essential. AT24C04C/08C adopts space-saving 8-lead PDIP, 8-pin JEDEC SOIC, 8-pin TSSOP, 8-pad UDFN, 5-pin SOT23, and 8-ball The VFBGA is packaged and accessed through a 2-wire serial interface.
2. Features
1. Low voltage and standard voltage operation
- VCC = 1.7V to 5.5V
2. Internal organization is 512 x 8 (4K) or 1024 x 8 (8K)
3. I2C compatible (2-wire) serial interface
4. Schmitt trigger, filter input for noise suppression
5. Two-way data transmission protocol
6. 1MHz (2.5V, 2.7V, 5V), 400kHz (1.7V) compatibility
7. Write protection pin for hardware data protection
8. 16-byte page write mode
- Allow partial page write
9. Self-timed write cycle (5ms Max)
10. High reliability
- Endurance: 1,000,000 write cycles
- Data retention: 100 years
11. Green package options (lead-free/halide-free/RoHS compliant)
- 8-lead PDIP, 8-lead SOIC, 8-lead TSSOP, 8-pad UDFN, 5-lead SOT23, And 8 ball VFBGA
12. Chip options: wafer form and tape and reel
3. Pin Configurations
4. Pin description
1. Serial clock (SCL): SCL input is used to input positive edge clock data into each EEPROM device and output negative edge clock data from each device.
2. Serial data (SDA): The SDA pin is bidirectional and is used for serial data transmission. This pin is open-drain drive and can be wired-ORed with any number of other open-drain or open-collector devices.
3. Device/page address (A2 and A1): AT24C04C uses A2 and A1 inputs for hard-wire addressing, allowing a total of four 4K devices to be addressed on a single bus system. Pin 1 is no connection and can be grounded. AT24C08C only uses A2 input for hardware addressing, a total of two 8K devices can be addressed on a single bus system. The A0 and A1 pins are not connected and can be grounded.
4. Write protection (WP): AT24C04C/08C has a write protection pin to provide hardware data protection. Write When connected to ground (GND), the protection pin allows normal read/write operations. When the write protection pin is connected to VCC, the write protection function is enabled.
