Alternatives to Microchip Technology AT89C51RD2-SLSUM
Microchip Technology AT89C51RD2-SLSUM and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 AT89C51RD2-SLSUMMicrochip Technology | AT89C51ED2-SLSUMMicrochip Technology | AT89C51ID2-SLRUMMicrochip Technology | +3more | |
|---|---|---|---|---|
| FFF Compatibility | The PLCC-44 package and all pin assignments are completely identical to the target part.Housed in the identical 44-PLCC package (16.6x16.6 mm) with standard J-lead footprint.Matches the 64KB Flash, 2KB RAM, 60MHz clock speed, and 2.7V to 5.5V operating supply range, while adding 2KB EEPROM. | Pins 1, 2, 12, and 34 are utilized for secondary clock and I2C lines instead of being strictly Not Internally Connected (NIC).Housed in the identical PLCC-44 package footprint.Meets or exceeds all performance, memory, and voltage parameters of the target part. | ||
 AI Summary | AT89C51RD2-SLSUM by Microchip Technology: 80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 44-PLCC (16.6x16.6). | The AT89C51ED2-SLSUM is a direct drop-in replacement from the same product series. It shares the same core, speed, voltage range, and memory capacities, while adding 2KB of on-chip EEPROM that can be ignored if unused.
| This is an enhanced variant within the same 80C51 family. It offers the same core memory sizes and speed but introduces on-chip I2C and a subclock oscillator, altering the function of four pins previously designated as Not Internally Connected.
| |
| Lifecycle Status | Active | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | 80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 44-PLCC (16.6x16.6) | 80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 44-PLCC (16.6x16.6) | 80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 44-PLCC (16.6x16.6) | |
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | |
| Type | Embedded | Embedded | Embedded | |
| Datasheet | Open | Open | Open | |
| Lead Time | 8 weeks | 4 weeks | 6 weeks | |
| Country of Origin | PH, US, TH | - | - | |
| Export Control Class Number | 3A991A2 | 3A991A2 | 3A991A2 | |
| HTSUS Code | 8542.31.0015 | - | - | |
| Moisture Sensitivity Level | 3 (168 Hours) | - | - | |
| Speed | 60MHz | - | - | |
| RAM Size | 2K x 8 | - | - | |
| Core Size | 8-Bit | - | - | |
| Peripherals | POR, PWM, WDT | - | - | |
| Connectivity | SPI, UART/USART | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Number of I/O | 34 | - | - | |
| Core Processor | 80C51 | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 AT89C51RD2-RLTUMMicrochip Technology | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
 AT89C51CC01CA-RLTUMMicrochip Technology | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 AT89S53-24JUMicrochip Technology | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Microchip Technology AT89C51RD2-SLSUM is active and in production. The parts listed here are qualified equivalents if you need a second source or better availability.
The closest qualified second sources for the Microchip Technology AT89C51RD2-SLSUM are the AT89C51ED2-SLSUM (Microchip Technology) and the AT89C51ID2-SLRUM (Microchip Technology), out of 5 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 AT89C51RD2-SLSUM 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 AT89C51RD2-SLSUM (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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