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Manufacturer Part #
AT21CS01-STUM10-T
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5000 per Reel
SOT-23 (SC-59,TO-236)
Surface Mount
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Description of Change:Microchip has released a new Datasheet for the AT21CS01/AT21CS11 - 1-Kbit Single-Wire, I/O Powered Serial EEPROM with Unique 64-Bit Serial Number of devices.Added WLCSP package to AT21CS11 product offering.Reason for Change: To Improve ProductivityChange Implementation Status: CompleteDate Document Changes Effective: 11 May 2026
Description of Change: Qualification of palladium coated copper with gold flash (CuPdAu) as a new wire material for AT21CS01-STUM10-T, AT21CS01-STUM11-T, AT21CS01-STUM12-T, AT21CS01-STUM13-T, AT21CS01-STUM14-T, AT21CS01-STUM15-T, AT21CS01-STUM16-T, AT21CS01-STUM17-T, AT21CS01-STUMC117-T, AT21CS11-STU10-T, AT21CS11-STU11-T and AT21CS11-STU12-T catalog part numbers (CPN) available in 3L SOT-23 (1.3mm) package at MTAI assembly site.Reason for Change: To improve productivity by qualifying palladium coated copper with gold flash (CuPdAu) as a new bond wire material at MTAI assembly site. Estimated First Ship Date: 11 December 2025 (date code: 2550)
Description of Change:Implementation of Inner Box, Reel and MSL Bag Label changes for virtually ALL Microchip products.Reason for Change:To improve productivity by implementing inner box, reel and MSL bag label changes.
Microchip has released a new Datasheet for the AT21CS01/AT21CS11 - 1-Kbit Single-Wire, I/O Powered Serial EEPROM with Unique 64-Bit Serial Number of devices. Notification Status: FinalDescription of Change:Replaced the inadequate CRC formula with the CRC-8/Maxim algorithm; CRC-8/Maxim details are in the public domain; No changes to form, fit or function.Impacts to Data Sheet: See above details.Reason for Change: To Improve Productivity.Change Implementation Status: Complete.Date Document Changes Effective: 10 Oct 2024
Microchip has released a new Datasheet for the AT21CS01/AT21CS11 - Single-Wire, I/O Powered 1-Kbit (128 x 8) Serial EEPROM with a Unique, Factory-Programmed 64-Bit Serial Number of devices.Description of Change: Added VSFN package offering.Reason for Change: To Improve Productivity
Microchip has released a new Datasheet for the AT21CS01/AT21CS11 - Single-Wire, I/O Powered 1-Kbit (128 x 8) Serial EEPROM with a Unique, Factory-Programmed 64-Bit Serial Number of devices. If you are using one of these devices please read the document located at AT21CS01/AT21CS11 - Single-Wire, I/O Powered 1-Kbit (128 x 8) Serial EEPROM with a Unique, Factory-Programmed 64-Bit Serial Number.Notification Status: FinalDescription of Change: Updated AT21S01 DC Characteristics table; Added Automotive Product Identification System.Impacts to Data Sheet: See above detailsReason for Change: To improve productivityChange Implementation Status: CompleteDate Document Changes Effective: 10 August 2023NOTE: Please be advised that this is a change to the document only the product has not been changed.
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Inventory held at our manufacturer's warehouse. Subject to availability and transit time.