Datasheet

82
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
13.3.3 Alternate Functions of Port C
The Port C alternate function is as follows:
Table 13-10 and Table 13-11 on page 83 relate the alternate functions of Port C to the overriding
signals shown in Figure 13-5 on page 76.
Table 13-9. Port C Pins Alternate Functions
Port Pin Alternate Function
PC7 A15 (External Memory interface address bit 15)
PC6 A14 (External Memory interface address bit 14)
PC5 A13 (External Memory interface address bit 13)
PC4 A12 (External Memory interface address bit 12)
PC3 A11 (External Memory interface address bit 11)
PC2 A10 (External Memory interface address bit 10)
PC1 A9 (External Memory interface address bit 9)
PC0 A8 (External Memory interface address bit 8)
Table 13-10. Overriding Signals for Alternate Functions in PC7:PC4
Signal
Name PC7/A15 PC6/A14 PC5/A13 PC4/A12
PUOE SRE • (XMM<1) SRE • (XMM<2) SRE • (XMM<3) SRE • (XMM<4)
PUOV 0 0 0 0
DDOE SRE • (XMM<1) SRE • (XMM<2) SRE • (XMM<3) SRE • (XMM<4)
DDOV 1 1 1 1
PVOE SRE • (XMM<1) SRE • (XMM<2) SRE • (XMM<3) SRE • (XMM<4)
PVOV A15 A14 A13 A12
DIEOE 0 0 0 0
DIEOV 0 0 0 0
DI – – – –
AIO – – – –