Product Overview
STMicroelectronics STLC21B Serial EEPROM - 1Kbit I2C, VESA Plug & Play, DIP-8
Condition
Unused NOS sourced from an electronics distributor consolidating inventory. DIP-8 body is clean and intact, pins show no oxidation. Markings visible on package: CHN F, LC21B 6, K0H001. No function testing performed - visual inspection confirms condition only.
Ships same business day from Idaho. Packed carefully.
Backed by our guarantee.
Product Overview
STMicroelectronics STLC21B is a 1Kbit (128 x 8) dual-mode serial EEPROM in a DIP-8 package. Designed for VESA Plug & Play applications and I2C bus systems. Stores non-volatile data - configuration settings, calibration values, or small parameter tables that persist through power cycles. Rated for 1 million erase/write cycles and 40-year data retention.
Key Features
- Memory: 1Kbit organized as 128 x 8 bits
- Interface: Two-wire serial, I2C bus compatible (100 kHz / 400 kHz)
- Supply voltage: 3.6V to 5.5V (or 2.5V to 5.5V - verify against datasheet for exact variant)
- Erase/write endurance: 1 million cycles
- Data retention: 40 years
- VESA Plug & Play compatible (VESA 1 designation indicated by "L" in related family variants)
- Package: DIP-8, confirmed by photo
- Dual mode operation
Applications
- VESA Plug & Play display identification and EDID storage
- Embedded system configuration and parameter storage
- Boot code or calibration data retention in low-power designs
- Prototype and repair work on I2C-based consumer electronics or industrial boards
Frequently Asked Questions
What interface does this EEPROM use?
Two-wire serial I2C bus, compatible with 100 kHz and 400 kHz clock speeds.
What supply voltage is required?
3.6V to 5.5V. Some variants in the STLC21 family support 2.5V to 5.5V - verify the exact range against the datasheet before use.
What is the package type?
DIP-8, confirmed by photo of this unit.
Is a datasheet or documentation included?
Not included.
A tiny chip with one job: remember what the system needs to know when the lights go out. Drop the STLC21B into your I2C design and it handles the rest quietly.
