13.3.3
Alternate Functions of Port C
The Port C alternate function is as follows:
Table 13-9. Port C Pins Alternate Functions
Port Pin
Alternate Function
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
A15(External Memory interface address bit 15)
A14(External Memory interface address bit 14)
A13(External Memory interface address bit 13)
A12(External Memory interface address bit 12)
A11(External Memory interface address bit 11)
A10(External Memory interface address bit 10)
A9(External Memory interface address bit 9)
A8(External Memory interface address bit 8)
Table 13-10 and Table 13-11 relate the alternate functions of Port C to the overriding signals
shown in Figure 13-5 on page 76.
Table 13-10. Overriding Signals for Alternate Functions in PC7:PC4
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
PC7/A15
PC6/A14
PC5/A13
PC4/A12
SRE • (XMM<1)
SRE • (XMM<2)
SRE • (XMM<3)
SRE • (XMM<4)
0
0
0
0
SRE • (XMM<1)
SRE • (XMM<2)
SRE • (XMM<3)
SRE • (XMM<4)
1
1
1
1
SRE • (XMM<1)
SRE • (XMM<2)
SRE • (XMM<3)
SRE • (XMM<4)
A15
0
A14
0
A13
0
A12
0
0
0
0
0
–
–
–
–
AIO
–
–
–
–
82
ATmega640/1280/1281/2560/2561
2549L–AVR–08/07
ATMEL [ ATMEL ]
