24LC1026-E/SN

24LC1026-E/SN is Microchip’s 1-Mbit I2C (two-wire) serial EEPROM.
Key points
- Capacity/organization: 128 kB (1,024 kbit), 131,072 × 8; uses a 2-byte memory address.
- Interface: I2C with A0–A2 hardware address pins; supports random reads and page writes.
- Page/size: 128-byte page writes; page boundaries respected during multi-byte writes.
- Performance: standard I2C up to 400 kHz; write cycle (tWC) up to about 5 ms.
- Endurance/retention: ~1,000,000 write cycles; data retention on the order of decades.
- Voltage/temperature: Vcc typically 2.7–5.5 V; -E suffix indicates industrial temp range (-40°C to +85°C); -SN indicates RoHS-compliant surface-mount package.
- Package: 8-pin (SOIC/PDIP) with RoHS-compliant options.
- Applications: bulk data storage for MCUs, configuration data, calibration tables, and data logging.
Notes: -SN = RoHS; -E = industrial temp range.

24LC1026-E/SN is Microchip’s 8-pin I2C serial EEPROM. Direct equivalents from other vendors are typically the 1K I2C EEPROM families, for example: AT24C01/AT24C02 (Atmel/Microchip), M24C01/M24C02 (ST), CAT24C01/CAT24C02 (ON Semiconductor). Ensure matching memory size, page size, addressing, voltage, and package. For exact substitutes, check vendor cross-reference tables or contact the distributor.

Here are the main features of 24LC1026-E/SN (I2C serial EEPROM):
- Density: 1 Mbit (128 KB) organized as 8 blocks of 16 KB.
- Interface: I2C two‑wire bus; standard/fast modes up to 400 kHz.
- Addressing: memory addressed in blocks via A0–A2 in the control byte; 16‑bit within-block word address.
- Page write: up to 128 bytes per write; one page write cycle (typical 3 ms, max ~5 ms).
- Read: random and sequential reads supported.
- Endurance/Data retention: ~1,000,000 write cycles; data retention ~40 years.
- Voltage and temp: operating voltage 2.7–5.5 V; temperature range -40°C to 85°C (industrial); -E indicates extended temp variant.
- Write protection: WP pin for hardware write protection.
- Power and layout: low-power standby; 8‑pin package (PDIP/SOIC); -SN indicates RoHS-compliant packaging.
- ESD/robust I2C operation with standard I2C voltage levels.

- Pin count: 8 pins (8‑pin package such as SOIC8/PDIP8).
- Function: 1‑Mbit I2C (two‑wire) serial EEPROM with 128 KB storage, 16‑bit memory addressing. Includes A0–A2 address pins for bus addressing, a WP write‑protect pin, and standard SDA/SCL, VCC, and GND pins.

- Manufacturer: Microchip Technology Inc.
- What kind of company: An American multinational semiconductor company that designs, manufactures, and sells microcontrollers, memory (like EEPROMs), and analog ICs. It operates as an integrated device manufacturer.

Key application areas for 24LC1026-E/SN (I2C EEPROM):
- Non-volatile storage for microcontrollers: configuration, calibration data, and parameters.
- Device identification: serial numbers, part IDs, and manufacturing data.
- Data logging: sensor readings and event logs in embedded systems.
- Lookup tables and small data files for embedded applications.
- Memory expansion for consumer electronics, automotive, industrial, and telecom equipment needing compact, durable I2C EEPROM.

8-pin SOIC (surface-mount) package.