ATMEGAS64M1-KH-SV

Overview

The ATMEGAS64M1-KH-SV is a radiation-tolerant 8-bit AVR microcontroller featuring a 32-lead CQFP package. It operates within a voltage range of 3.0 V to 3.6 V and supports core speeds up to 8 MHz. The device includes 64 KB of in-system programmable Flash, 2 KB of EEPROM, and 4 KB of internal SRAM. Key peripherals include a CAN 2.0A/B controller, an 8-bit UART supporting LIN protocols, a 12-bit Power Stage Controller (PSC), a 10-bit ADC with differential channels, and a 10-bit DAC.

Feature Summary

• Radiation tolerance certified for space applications with no single event latch-up below 62.5 MeV/mg/cm² and tested up to 30 KRads(Si) total ionizing dose.
• Integrated 12-bit high-speed power stage controller providing nonoverlapping inverted PWM outputs with flexible dead-time control.
• Supports CAN 2.0A/B communication with six message objects and ISO16845 certification.
• Includes a 10-bit digital-to-analog converter for variable voltage reference generation.

Applications

• Satellite subsystems
• Space constellation remote terminal controllers
• Launch vehicle avionics
• Critical aerospace data processing

Procurement Notes

Verify the specific suffix KH-SV against official Microchip documentation to confirm the ceramic quad flat package (CQFP) configuration and mass specifications. Ensure that the operating voltage range of 3.0 V to 3.6 V aligns with the target system design requirements before procurement.

Selection Notes

Select this component when designing systems requiring radiation hardening for space environments. It serves as a pin-compatible upgrade from standard commercial off-the-shelf devices like the ATmega64M1, offering enhanced reliability without altering the physical footprint or basic peripheral functionality.

Part Context

This part belongs to the ATmegaS series, which utilizes a Commercial Off-The-Shelf (COTS) radiation-hardened development approach. It is derived from the automotive-grade ATmega64M1 but features specialized packaging and screening to meet high-reliability standards for space missions.

Replacement Considerations

The ATMEGAS64M1 is designed as a direct pin-compatible replacement for the ATmega64M1 during the transition from prototype to production in space-rated designs.