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ATSAMHA1G15A-MBT Equivalent & Substitute Parts
Part Overview
The ATSAMHA1G15A-MBT is a 32-bit ARM Cortex-M0+ microcontroller from Microchip Technology's SAM HA1 series, designed for automotive applications with functional safety (FuSa) capabilities. This device integrates 32KB FLASH memory, 4KB RAM, and 1KB EEPROM in a 48-pin VQFN package. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Core Processor | ARM Cortex-M0+ |
| Core Size | 32-Bit Single-Core |
| Speed | 48MHz |
| Program Memory Size | 32KB (32K x 8) FLASH |
| EEPROM Size | 1K x 8 |
| RAM Size | 4K x 8 |
| Number of I/O | 32 |
| Voltage Supply (Vcc/Vdd) | 0V ~ 3.8V |
| Data Converters | A/D 13x12b; D/A 1x10b |
| Connectivity | I2C, LINbus SBC, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Operating Temperature | -40°C ~ 105°C (TC) |
| Package | 48-VQFN (7x7) Exposed Pad |
| Mounting Type | Surface Mount, Wettable Flank |
| Grade | Automotive |
| Qualification | AEC-Q100 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the ATSAMHA1G15A-MBT is determined by strict equivalence across the following critical parameters:
- Processor Architecture: ARM Cortex-M0+ 32-bit single-core at 48MHz
- Memory Configuration: 32KB FLASH, 4KB RAM, 1KB EEPROM
- I/O Count: 32 I/O pins
- Connectivity & Peripherals: I2C, LINbus SBC, SPI, UART/USART, DMA, PWM, WDT, Brown-out Detect/Reset, POR
- Data Conversion: A/D 13x12-bit, D/A 1x10-bit
- Voltage Range: 0V ~ 3.8V supply
- Operating Temperature: -40°C ~ 105°C
- Package: 48-VQFN (7x7) with exposed pad
- Automotive Compliance: AEC-Q100 qualification
- Series: SAM HA1 Functional Safety (FuSa)
The ATSAMHA1G15A-MBT-BVAO meets all these criteria and is classified as a parametric equivalent with active product status.
Parameter Comparison
| Parameter | ATSAMHA1G15A-MBT | ATSAMHA1G15A-MBT-BVAO |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Series | SAM HA1, Functional Safety (FuSa) | SAM HA1, Functional Safety (FuSa) |
| Core Processor | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core |
| Speed | 48MHz | 48MHz |
| Program Memory | 32KB (32K x 8) FLASH | 32KB (32K x 8) FLASH |
| EEPROM | 1K x 8 | 1K x 8 |
| RAM | 4K x 8 | 4K x 8 |
| Number of I/O | 32 | 32 |
| Voltage Supply | 0V ~ 3.8V | 0V ~ 3.8V |
| Data Converters | A/D 13x12b; D/A 1x10b | A/D 13x12b; D/A 1x10b |
| Connectivity | I2C, LINbus SBC, SPI, UART/USART | I2C, LINbus SBC, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Operating Temperature | -40°C ~ 105°C (TC) | -40°C ~ 105°C (TC) |
| Package | 48-VQFN (7x7) Exposed Pad | 48-VQFN (7x7) Exposed Pad |
| Mounting Type | Surface Mount, Wettable Flank | Surface Mount, Wettable Flank |
| Grade | Automotive | Automotive |
| Qualification | AEC-Q100 | AEC-Q100 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active |
| Moisture Sensitivity Level | 3 (168 Hours) | 1 (Unlimited) |
Engineering Selection Recommendations
The ATSAMHA1G15A-MBT-BVAO is the direct parametric equivalent for the obsolete ATSAMHA1G15A-MBT. Both devices share identical electrical specifications, memory configuration, I/O architecture, and automotive-grade certifications. The substitute part is currently in active production status, ensuring supply chain continuity.
The ATSAMHA1G15A-MBT-BVAO offers improved moisture sensitivity characteristics (MSL 1 versus MSL 3), providing enhanced reliability in storage and handling conditions. Both parts maintain full AEC-Q100 automotive qualification and ROHS3 compliance, making them suitable for equivalent use in automotive functional safety applications.
Frequently Asked Questions (FAQ)
Q: Can ATSAMHA1G15A-MBT-BVAO be used as a direct replacement for ATSAMHA1G15A-MBT?
A: Yes. Both parts are parametrically equivalent across all electrical, memory, I/O, connectivity, and peripheral specifications. They share identical package geometry (48-VQFN 7x7), mounting type, and automotive qualification levels.
Q: What is the difference between these two part numbers?
A: The primary differences are product status and moisture sensitivity. The ATSAMHA1G15A-MBT is obsolete, while the ATSAMHA1G15A-MBT-BVAO is active. The substitute part has MSL 1 (unlimited storage) compared to MSL 3 (168-hour limit), indicating superior moisture protection.
Q: Are there any compatibility concerns with PCB layouts or firmware?
A: No. Identical pin configuration, package dimensions, and electrical characteristics ensure full compatibility with existing PCB designs and firmware implementations.
Q: Does the substitute part maintain automotive compliance?
A: Yes. The ATSAMHA1G15A-MBT-BVAO carries AEC-Q100 qualification and ROHS3 compliance, meeting all automotive-grade requirements of the original part.
Q: What is the supply status of the substitute part?
A: The ATSAMHA1G15A-MBT-BVAO is in active production with current inventory availability, providing reliable long-term supply for new designs and production runs.
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