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Product Detailed Parameters
- Description：32KB,ECC,2XCPU,20MHZ,ERRCTRL,MVI
- Series：*
- Mfr：Microchip Technology
- Package：Tube
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- Program Memory Size：-
- Program Memory Type：-
- EEPROM Size：-
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- Voltage - Supply (Vcc/Vdd)：-
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- Oscillator Type：-
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- Supplier Device Package：-
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Overview
The AVR32SD28-I/SS is an 8-bit microcontroller from Microchip Technology, part of the AVR SD series. It features a dual-core lockstep CPU architecture with hardware multiplication, operating at clock speeds up to 20 MHz. The device includes 32 KB of system-in-programmable flash memory with ECC, 4 KB of SRAM with ECC, and 256 bytes of EEPROM with ECC. It provides 19 ADC channels with 12-bit resolution and supports multiple communication interfaces including USART, SPI, and TWI. The component operates within a voltage range of 2.7 V to 5.5 V and is housed in a 28-pin SSOP package.
Feature Summary
- Dual-core lockstep CPU configuration for enhanced functional safety compliance
- Integrated error correction codes (ECC) across flash, SRAM, and EEPROM
- Advanced analog peripherals including high-resolution ADC and comparators
- Comprehensive digital peripheral set with event system and multiple timers
Applications
- Automotive safety systems requiring ISO 26262 ASIL C compliance
- Industrial automation controllers needing robust fault detection
- Medical devices demanding high reliability and data integrity
- Security systems utilizing secure programming and debugging interfaces
Procurement Notes
Verify the specific suffix against official Microchip documentation to confirm pinout and electrical characteristics. Ensure the ordering code matches the required package type and temperature grade. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity. Confirm availability of necessary development tools such as MPLAB X IDE for programming and debugging purposes.
Selection Notes
Select this component when functional safety standards like ISO 26262 are mandatory due to its dual-core architecture. Choose it for applications requiring high data integrity provided by ECC on all non-volatile and volatile memories. Consider this MCU for designs needing precise analog signal processing via its 12-bit ADC and event-driven peripheral interactions.
Part Context
This microcontroller belongs to the AVR SD family, designed specifically for safety-critical applications. It integrates advanced security features and robust error handling mechanisms. The series supports various pin counts and packages to accommodate different design constraints while maintaining consistent core functionality and safety certifications.
Replacement Considerations
Consult Microchip's official cross-reference guides for verified substitutes. Ensure any replacement maintains dual-core lockstep capability and ECC support. Verify compatibility with existing firmware and safety certification requirements before implementation.
