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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATECC508A датащи(PDF) 60 Page - Microchip Technology |
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ATECC508A датащи(HTML) 60 Page - Microchip Technology |
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60 / 109 page  Block 0 Block 1 Block 2 Block 3 Slot Address Size Address Size Address Size Address Size 14 0x0070 32 0x0170 32 0x0270 8 15 0x0078 32 0x0178 32 0x0278 8 Note: To complete a four byte read of the 53rd through 56th byte of Slot 9, the word address would be: • The 53rd byte is the 21st byte in Block 1 (53 divided by 32 is 1, 53 minus 32 is 21). • The 21st byte is located at byte offset 0x14, which is at word offset 0x05 (0x14 divided by 4 is 0x05). • Per Table 9-6, the address parameter to the Read command is 000000 01 0 1001 101 or 0x014. 000000 01 0 1001 101 0 1 4 D Word Offset Slot Number Unused Block Number Unused 9.1.5 Zone Encoding The value in Param1 controls which zone the command accesses. See Section Configuration Zone Locking to obtain more information on what controls the locked and unlocked states for each zone. All other zone values are reserved and should not be used. Table 9-9. Zone Encoding (Param1) Zone Param1 Value Size Read Write Config 0 1024 bits 128 bytes 4 blocks Always available. Partially, when unlocked. Never when locked. Never encrypted. OTP 1 512 bits 64 bytes 2 blocks Never when unlocked. Always when locked. See Section EEPROM One Time Programmable (OTP) Zone. All writeable when unlocked using Write. When locked, write permissions depend on OTPmode. See Section EEPROM One Time Programmable (OTP) Zone. Data 2 9664 bits 1208 bytes 16 Slots Never when unlocked; otherwise, controlled by IsSecret and EncryptRead. All writeable when unlocked. When locked, writes controlled by WriteConfig. 9.1.6 Watchdog Fail-Safe After the ATECC508A receives a Wake token, a watchdog counter starts within the device. After tWATCHDOG, the device enters sleep mode regardless of whether an I/O transmission or command ATECC508A Security Commands © 2017 Microchip Technology Inc. Datasheet Complete DS20005927A-page 60 |
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