ATTINY441_14 Datasheet, PDF (24/366 Pages) ATMEL Corporation – 8-bit AVR Microcontroller with 4/8K Bytes In-System

5.4.5 GPIOR2 – General Purpose I/O Register 2
Bit
0x15 (0x35)
Read/Write
Initial Value
7
6
5
4
3
2
1
0
MSB
LSB
GPIOR2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
This register may be used freely for storing any kind of data.
5.4.6 GPIOR1 – General Purpose I/O Register 1
Bit
0x14 (0x34)
Read/Write
Initial Value
7
6
5
4
3
2
1
0
MSB
LSB
GPIOR1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
This register may be used freely for storing any kind of data.
5.4.7 GPIOR0 – General Purpose I/O Register 0
Bit
0x13 (0x33)
Read/Write
Initial Value
7
6
5
4
3
2
1
0
MSB
LSB
GPIOR0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
This register may be used freely for storing any kind of data.
ATtiny441/841 [DATASHEET] 24
8495H–AVR–05/2014