ATMEGA645A-AUAlternatives & Equivalent Parts
About ATMEGA645A-AU
ATMEGA645A-AU is a Integrated Circuit component manufactured by Microchip. It comes in a Quad Flat Packages 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 | ATMEGA645A-AUSource | TVP5158PNP | ATXMEGA64D3-AU |
|---|---|---|---|
| Manufacturer | Microchip | Texas Instruments | Microchip |
| Package Type | Quad Flat Packages | Quad Flat Packages | Quad Flat Packages |
| Pin Count | 64 | 128 | 64 |
| Temperature Range | -40.0°C ~ 85.0°C | ~ 70.0°C | -40.0°C ~ 85.0°C |
| Price | $4.6500 | $9.9625 | $3.8900 |
| Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | |||
| Pbfree Code | Yes | Yes | Yes |
| Manufacturer Package Code | TQFP-64 | — | TQFP-64 |
| Factory Lead Time | 10 Weeks | — | 17 Weeks |
| YTEOL | 14 | 15 | 14 |
| Has ADC | YES | — | YES |
| Additional Feature | ALSO OPERATES AT 2.7 V MINIMUM SUPPLY AT 8 MHZ AND 1.8 V MINIMUM SUPPLY AT 4 MHZ | IT ALSO REQUIRES 1.8 V AND 3.6 V SUPPLY | — |
| Bit Size | 8 | — | 8 |
| Boundary Scan | YES | — | YES |
| CPU Family | AVR RISC | — | AVR RISC |
| Clock Frequency-Max | 20 MHz | — | 32 MHz |
| DAC Channels | NO | — | NO |
| DMA Channels | NO | — | NO |
| Format | FIXED POINT | — | — |
| Integrated Cache | NO | — | — |
| JESD-30 Code | S-PQFP-G64 | S-PQFP-G128 | S-PQFP-G64 |
| JESD-609 Code | e3 | e4 | e3 |
| Low Power Mode | YES | — | — |
| Number of External Interrupts | 32 | — | — |
| Number of I/O Lines | 54 | — | 50 |
| Number of Serial I/Os | 1 | — | — |
| Number of Timers | 3 | — | — |
| On Chip Data RAM Width | 8 | — | — |
| On Chip Program ROM Width | 8 | — | 8 |
| PWM Channels | YES | — | YES |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP64,.63SQ,32 | TQFP128,.63SQ,16 | TQFP64,.63SQ,32 |
| Package Shape | SQUARE | SQUARE | SQUARE |
| Package Style | FLATPACK, THIN PROFILE | FLATPACK | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| RAM (bytes) | 4096 | — | 4096 |
| ROM (words) | 65536 | — | 65536 |
| ROM Programmability | FLASH | — | FLASH |
| Speed | 16 MHz | — | 32 MHz |
| Supply Current-Max | 12 mA | — | 18 mA |
| Supply Voltage-Max | 5.5 V | — | 3.6 V |
| Supply Voltage-Min | 5 V | — | 1.8 V |
| Supply Voltage-Nom | 5 V | — | 1.8 V |
| Surface Mount | YES | YES | YES |
| Technology | CMOS | — | CMOS |
| Temperature Grade | INDUSTRIAL | COMMERCIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) |
| Terminal Form | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 0.8 mm | 0.4 mm | 0.8 mm |
| Terminal Position | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | — | MICROCONTROLLER, RISC |
| ## ATMEGA645A-AU Alternates Showing results | Image | — | — |
| Consumer IC Type | — | COLOR SIGNAL DECODER | — |
| Input Type | — | R-Y; B-Y; Y | — |
| Number of Functions | — | 1 | — |
| Supply Voltage-Max (Vsup) | — | 1.2 V | — |
| Supply Voltage-Min (Vsup) | — | 1 V | — |
| Time@Peak Reflow Temperature-Max (s) | — | 30 | — |
| Video Standard | — | PAL; NTSC; SECAM | — |
| ## TVP5158PNP Alternates Showing results | — | Image | — |
| ## ATXMEGA64D3-AU Alternates Showing results | — | — | Image |
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 2 alternatives for ATMEGA645A-AU — response within 24 hours.
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Why Look for Alternatives?
Finding alternatives for ATMEGA645A-AU 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 ATMEGA645A-AU 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 ATMEGA645A-AU?
Known equivalents for ATMEGA645A-AU include TVP5158PNP, ATXMEGA64D3-AU. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of ATMEGA645A-AU?
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 ATMEGA645A-AU 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.