AT89LP51RB2-20JUAlternatives & Equivalent Parts
About AT89LP51RB2-20JU
AT89LP51RB2-20JU is a Integrated Circuit component manufactured by Microchip. It comes in a Plastic Leaded Chip Carrier package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | AT89LP51RB2-20JUSource | AT89LP51RD2-20JU | AT89LP51ED2-20JU | AT89LP51ID2-20JU |
|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip |
| Package Type | Plastic Leaded Chip Carrier | Plastic Leaded Chip Carrier | Plastic Leaded Chip Carrier | Plastic Leaded Chip Carrier |
| Pin Count | 44 | 44 | 44 | 44 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $2.9400 | $4.3200 | $4.8300 | $5.2500 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | OBSOLETE |
| Electrical Parameters | ||||
| Pbfree Code | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | PLCC-44 | PLCC-44 | PLCC-44 | PLCC-44 |
| Factory Lead Time | 8 Weeks | 7 Weeks | 7 Weeks | — |
| YTEOL | 15 | 14 | 14 | 0 |
| Has ADC | YES | YES | YES | YES |
| Address Bus Width | 16 | 16 | 16 | 16 |
| Bit Size | 8 | 8 | 8 | 8 |
| Boundary Scan | NO | NO | NO | NO |
| CPU Family | 8051 | 8051 | 8051 | 8051 |
| Clock Frequency-Max | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| DAC Channels | YES | YES | YES | YES |
| DMA Channels | NO | NO | NO | NO |
| External Data Bus Width | 8 | 8 | 8 | 8 |
| Format | FIXED POINT | FIXED POINT | FIXED POINT | FIXED POINT |
| Integrated Cache | NO | NO | NO | NO |
| JESD-30 Code | S-PQCC-J44 | S-PQCC-J44 | S-PQCC-J44 | S-PQCC-J44 |
| JESD-609 Code | e3 | e3 | e3 | e3 |
| Low Power Mode | YES | YES | YES | YES |
| Number of External Interrupts | 2 | 2 | 2 | 2 |
| Number of I/O Lines | 40 | 40 | 40 | 40 |
| Number of Serial I/Os | 1 | 1 | 1 | 1 |
| Number of Timers | 3 | 3 | 3 | 3 |
| On Chip Data RAM Width | 8 | 8 | 8 | 8 |
| PWM Channels | YES | YES | YES | YES |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC44,.7SQ | LDCC44,.7SQ | LDCC44,.7SQ | LDCC44,.7SQ |
| Package Shape | SQUARE | SQUARE | SQUARE | SQUARE |
| Package Style | CHIP CARRIER | CHIP CARRIER | CHIP CARRIER | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 245 | 245 | 245 | 245 |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| RAM (bytes) | 1408 | 2304 | 2304 | 2304 |
| ROM (words) | 0 | 65536 | 65536 | 65536 |
| ROM Programmability | FLASH | FLASH | FLASH | FLASH |
| Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage-Max | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min | 5 V | 3 V | 3 V | 3 V |
| Supply Voltage-Nom | 5 V | 3 V | 3 V | 3 V |
| Surface Mount | YES | YES | YES | YES |
| Technology | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | MATTE TIN |
| Terminal Form | J BEND | J BEND | J BEND | J BEND |
| Terminal Pitch | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm |
| Terminal Position | QUAD | QUAD | QUAD | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 | 40 | 40 | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER | MICROCONTROLLER | MICROCONTROLLER | MICROCONTROLLER |
| On Chip Program ROM Width | — | 8 | 8 | 8 |
| Supply Current-Max | — | 7 mA | 7 mA | 7 mA |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 3 alternatives for AT89LP51RB2-20JU — response within 24 hours.
Quick Links
Microcontroller, 8-Bit, FLASH, 8051 CPU, 20MHz, CMOS, PQCC44
Microcontroller, 8-Bit, FLASH, 8051 CPU, 20MHz, CMOS, PQCC44
Microcontroller, 8-Bit, FLASH, 8051 CPU, 20MHz, CMOS, PQCC44
Why Look for Alternatives?
Finding alternatives for AT89LP51RB2-20JU is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating AT89LP51RB2-20JU replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to AT89LP51RB2-20JU?
Known equivalents for AT89LP51RB2-20JU include AT89LP51RD2-20JU, AT89LP51ED2-20JU, AT89LP51ID2-20JU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of AT89LP51RB2-20JU?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify AT89LP51RB2-20JU alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.