Rainbow Electronics ATmega128L - Manual (Page 72)

72
ATmega128(L)
2467B–09/01
Alternate Functions of Port C In ATmega103 compatibility mode, Port C is output only. The Port C has an alternate
function as the address high byte for the External Memory Interface.
Table 34 and Table 35 relate the alternate functions of Port C to the overriding signals
shown in
Figure 32 on page 66.
Note: 1. XMM = 0 in ATmega103 compatibility mode.
Table 33. Port C Pins Alternate Functions
Port Pin Alternate Function
PC7 A15
PC6 A14
PC5 A13
PC4 A12
PC3 A11
PC2 A10
PC1 A9
PC0 A8
Table 34. Overriding Signals for Alternate Functions in PC7..PC4
Signal
Name
PC7/A15 PC6/A14 PC5/A13 PC4/A12
PUOE SRE • (XMM (1) <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 A11 A10 A9 A8
DIEOE 0 0 0 0
DIEOV 0 0 0 0
DI – – – –
AIO – – – –