23K256T-I/SN

23K256T-I/SN is a 256‑Kbit I2C serial EEPROM. It provides nonvolatile storage organized as 32K × 8 bytes, accessible over a two‑wire I2C bus. Key features include random and sequential reads, and page‑write capability (typical page size around 32–64 bytes) with a write cycle of a few milliseconds. Supply voltage ranges from about 1.7 to 5.5 V. Temperature range is industrial (-40°C to +85°C) as indicated by the “-I” suffix. The “/SN” suffix denotes the package type (an 8‑pin small‑outline/SOP package). Address pins (A0–A2) allow multiple devices on the same I2C bus. Typical applications: storing configuration data, calibration tables, or other small datasets that must persist without power. In short: a compact, nonvolatile I2C memory ideal for microcontroller data storage and lookup tables.

Here are the typical features of the 23K256T-I/SN (256‑Kbit SPI Serial EEPROM):
- 256 Kbit serial EEPROM (32K × 8)
- SPI interface (CS, CLK, DI, DO)
- 2‑byte addressing (A15..A0) for full range
- Page write support with auto-increment (page size commonly 64 bytes)
- Random and sequential read capability; fast read option
- Write protection via WP pin; Hold pin available
- Low‑power modes: standby and deep power‑down
- Operating voltage: 2.7–5.5 V
- Industrial temperature version: typically -40°C to +85°C
- 8‑pin package (DIP-8/SOIC-8); RoHS/Pb‑free
- Endurance: around 1,000,000 write cycles (typical)
- Data retention: decades (roughly 40+ years)
Note: exact page size, timing, and voltage specs can vary by submodel; consult the datasheet for precise figures.

- Pin count: 8 pins (8-pin package, e.g., SOIC-8)
- Function: 256-kbit serial SPI EEPROM memory (32 kB) accessible via SPI (CS, SI/DI, SO/DO, SCK) with WP and HOLD pins, plus Vcc and Gnd. Used for nonvolatile data storage with SPI interface.

- Manufacturer: Microchip Technology Inc.
- What kind of company: An American multinational semiconductor company that designs, manufactures, and sells microcontrollers, memory (including EEPROM), and other integrated circuits for embedded systems.

Applications for 23K256T-I/SN (256-kbit SRAM):
- General-purpose RAM for microcontrollers/SoCs
- Data and instruction buffering, cache memory
- Frame buffers for LCDs and small displays
- High-speed buffering in networking, telecom, and printers
- Temporary data logging/storage in consumer electronics
- Automotive and industrial control memory
- DSP/audio/video processing buffers
Notes: used where fast, reliable random-access memory with small footprint is needed.

8-pin surface-mount package, typically SOIC-8 (plastic small-outline).