Microchip 11AA010T-I/TT, 1Kbit Serial EEPROM, Single Wire interface, 1.8V to 5.5V supply, 100 kHz clock, SOT-23-3 package, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Memory type | Non-Volatile |
| Mounting | Surface Mount |
| Supply voltage | 1.8V ~ 5.5V |
| Clock frequency | 100 kHz |
| Memory interface | Single Wire |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Technology | EEPROM |
| Memory size | 1Kbit |
| Memory format | EEPROM |
| Case | TO-236-3, SC-59, SOT-23-3 |
| Memory organization | 128 x 8 |
| Write cycle time - word, page | 5ms |
The Microchip 11AA010T-I/TT is a 1Kbit serial EEPROM that communicates over a single-wire interface, reducing the I/O count to one data line plus ground. The memory is organized as 128 x 8 bits, and the single-wire protocol handles both data and clock on the same pin, so no dedicated SPI or I²C bus is needed.
At 1.8V it works with low-voltage microcontrollers; at 5V it drops into existing 5V industrial designs.
Yes, it is ROHS3 compliant per Microchip's listing.
No official direct replacement is listed. The AT93C46DY6-YH-E is a 1Kbit EEPROM but uses a 3-wire serial interface (Microwire) in a different package, so it is not pin-compatible. The AT24CSW010-STUM-T uses I²C. For a single-wire drop-in, the 11AA010T-I/TT is the only current-production option.