ST24LC21 1Kb (x8) DUAL MODE SERIAL EEPROM is a 1K bit electrically erasable programmable memory (EEPROM) produced by ST company. It has 1 million erase/write cycles and 40 years data retention time. Its working voltage is 2.5V to 5.5V and it is compatible with 400k Hz I2C bus. It supports page write (up to 8 bytes), byte, random and sequential read modes. It has automatic timed programming cycle and automatic address incrementing function.
The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM) organized by 8 bits. It operates with a single supply voltage ranging from 2.5V to 5.5V and supports a maximum frequency of 400kHz. The device is available in both Plastic Dual-in-Line and Plastic Small Outline packages.
| Memory Capacity | 1Kb (x8) |
|---|---|
| Erase/Write Cycles | 1 million |
| Data Retention | 40 years |
| Supply Voltage | 2.5V to 5.5V |
| Maximum Frequency | 400k Hz |
| Operating Temperature | 0 to 70 °C |
| Storage Temperature | -65 to 150 °C |
| Supply Current (Rise/Fall time < 10ns) | 2 mA |
No, the document states it is not recommended for new designs.
The device select code is 101.
All operations are disabled until the Vcc voltage reaches the POR threshold value.