ATMEGA16U4_1 Datasheet, PDF (75/408 Pages) ATMEL Corporation – 8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller

ATmega16U4/ATmega32U4
• OC.3A/OC.4A – Port C, Bit 6
OC.3A: Timer 3 Output Compare A. This pin can be used to generate a PWM signal from Timer
3 module.
OC.4A: Timer 4 Output Compare A. This pin can be used to generate a high-speed PWM signal
from Timer 4 module, complementary to OC.4A (PC7) signal. The pin has to be configured as an
output (DDC6 set “one”) to serve this function.
Table 10-7 relate the alternate functions of Port C to the overriding signals shown in Figure 10-5
on page 69.
Table 10-7. Overriding Signals for Alternate Functions in PC7.PC6
Signal
Name
PC7/ICP3/CLKO/OC.4
A
PC6/OC.3A/OC.4A
PUOE SRE • (XMM<1)
SRE •
(XMM<2)|OC3A
enable
PUOV 0
0
DDOE SRE • (XMM<1)
SRE • (XMM<2)
DDOV 1
1
PVOE SRE • (XMM<1)
SRE • (XMM<2)
PVOV A15
if (SRE.XMM<2)
then A14
else OC3A
DIEOE 0
0
DIEOV 0
0
DI
ICP3 input
–
AIO
–
–
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