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8-bit Atmel Microcontroller

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8.6.4 GPIOR2 – General Purpose I/O Register 2
Bit
0x2B (0x4B)
Read/Write
Initial Value
7
MSB
R/W
0
6
R/W
0
5
R/W
0
4
R/W
0
3
R/W
0
2
R/W
0
1
R/W
0
0
LSB
R/W
0
GPIOR2
8.6.5 GPIOR1 – General Purpose I/O Register 1
Bit
0x2A (0x4A)
Read/Write
Initial Value
7
MSB
R/W
0
6
R/W
0
5
R/W
0
4
R/W
0
3
R/W
0
2
R/W
0
1
R/W
0
0
LSB
R/W
0
GPIOR1
8.6.6 GPIOR0 – General Purpose I/O Register 0
Bit
0x1E (0x3E)
Read/Write
Initial Value
7
MSB
R/W
0
6
R/W
0
5
R/W
0
4
R/W
0
3
R/W
0
2
R/W
0
1
R/W
0
0
LSB
R/W
0
GPIOR0
Note:
1. SRWn1 = SRW11 (upper sector) or SRW01 (lower sector), SRWn0 = SRW10 (upper sector) or SRW00 (lower
sector). The ALE pulse in period T4 is only present if the next instruction accesses the RAM (internal or
external).
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P [DATASHEET]
Atmel-8272G-AVR-01/2015
29
ATMEL Corporation
ATMEL Corporation


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