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ATTINY817-MFR. Datasheet(PDF) 20 Page - Microchip Technology |
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ATTINY817-MFR. Datasheet(HTML) 20 Page - Microchip Technology |
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20 / 492 page  6.8.1 Register Summary - GPIOR Offset Name Bit Pos. 0x00 GPIOR0 7:0 GPIOR[7:0] 0x01 GPIOR1 7:0 GPIOR[7:0] 0x02 GPIOR2 7:0 GPIOR[7:0] 0x03 GPIOR3 7:0 GPIOR[7:0] 6.8.2 Register Description - GPIOR 6.8.2.1 General Purpose I/O register n These are general purpose registers that can be used to store data, such as global variables and flags, in the bitaccessible I/O memory space. Name: GPIOR Offset: 0x00 + n*0x01 [n=0..3] Reset: 0x00 Property: - Bit 7 6 5 4 3 2 1 0 GPIOR[7:0] Access R/W R/W R/W R/W R/W R/W R/W R/W Reset 0 0 0 0 0 0 0 0 Bits 7:0 – GPIOR[7:0]: GPIO Register byte 6.9 FUSES - Configuration and User Fuses Fuses are part of the non-volatile memory and holds factory calibration data and device configuration. The fuses are available from device power-up. The fuses can be read by the CPU or the UPDI, but can only be programmed or cleared by the UPDI. The configuration and calibration values stored in the fuses are written to their respective target registers at the end of the start-up sequence. The content of the Signature Row fuses (SIGROW) is pre-programmed, and cannot be altered. SIGROW holds information such as device ID, serial number, and calibration values. The fuses for peripheral configuration (FUSE) are pre-programmed, but can be altered by the user. Altered values in the configuration fuses will be effective only after a Reset. This device also provides a User Row fuse area (USERROW) that can hold application data. The USERROW can be programmed on a locked device by the UPDI. This can be used for final configuration without having programming or debugging capabilities enabled. Related Links Signature Row Description Fuse Description ATtiny417/817 © 2017 Microchip Technology Inc. Datasheet Complete DS40001901B-page 20 |
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