Alternatives to Microchip Technology AT89S53-24JU
Microchip Technology AT89S53-24JU and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for Microchip Technology AT89S53-24JU
 AT89S53-24JUMicrochip Technology | AT89S8253-24JUMicrochip Technology | AT89C51ED2-SLSUMMicrochip Technology | +1more | |
|---|---|---|---|---|
| FFF Compatibility | The pinout is identical, matching the standard MCS-51 PLCC-44 layout.Matches the physical dimensions and lead form of the original PLCC-44 package.Executes the same 8051 instruction set at 24MHz with identical 12KB flash memory. | Matches the standard MCS-51 pin layout on the PLCC-44 package.Utilizes the same standard PLCC-44 physical dimensions.Fully backward-compatible instruction set with significantly upgraded memory and speed ceilings. | ||
 AI Summary | AT89S53-24JU by Microchip Technology: 8051 89S Microcontroller IC 8-Bit 24MHz 12KB (12K x 8) FLASH 44-PLCC (16.6x16.6). | This is the official manufacturer-recommended replacement for the obsolete AT89S53-24JU. It is in active production and offers identical memory capacity while adding 2KB of integrated EEPROM, a Power-On Reset circuit, and a wider operating voltage range of 2.7V to 5.5V.
| This is a high-performance, active 8051-based microcontroller that serves as an excellent upgrade alternative. It expands memory capacity to 64KB Flash and 2KB RAM, while increasing the maximum clock speed to 60MHz in the same PLCC-44 package footprint.
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| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Frequently asked questions
Yes. The Microchip Technology AT89S53-24JU is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Microchip Technology AT89S53-24JU are the AT89S8253-24JU (Microchip Technology) and the AT89C51ED2-SLSUM (Microchip Technology), out of 3 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the AT89S53-24JU are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The AT89S53-24JU (Microchip Technology) is a part in the Embedded category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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