8-bit AVR Microcontroller

SKEY - Serial KEY signaling

The SKEY instruction is used to signal the activation key that enables NVM programming. The SKEY instruction is followed by the 8 data bytes that includes the activation key.

Table 1. The Serial KEY signaling (SKEY) Instruction
Operation Opcode Remarks
Key ← {8[data}} 1110 0000 Data bytes follow after instruction
Parent topic: Instruction Set