Rainbow Electronics ATmega64M1 User Manual
Page 77
77
8209A–AVR–08/09
ATmega16M1/32M1/64M1
SS_A: Slave Port Select input. When the SPI is enabled as a slave, this pin is configured as an
input regardless of the setting of DDD0. As a slave, the SPI is activated when this pin is driven
low. When the SPI is enabled as a master, the data direction of this pin is controlled by DDD0.
When the pin is forced to be an input, the pull-up can still be controlled by the PORTD0 bit.
PCINT9, Pin Change Interrupt 9.
• PCINT8/PSCOUT1A/INT3 – Bit 0
PSCOUT1A, Output 1A of PSC.
INT3, External Interrupt source 3: This pin can serve as an external interrupt source to the MCU.
PCINT8, Pin Change Interrupt 8.
relate the alternate functions of Port C to the overriding signals
.
Table 14-7.
Overriding Signals for Alternate Functions in PC7..PC4
Signal Name
PC7/D2A/AMP2+/
PCINT15
PC6/ADC10/
ACMP1/
PCINT14
PC5/ADC9/
AMP1+/ACMP3/
PCINT13
PC4/ADC8/
AMP1-
/ACMPN3/
PCINT12
PUOE
0
0
0
PUOV
0
0
0
DDOE
DAEN
0
0
0
DDOV
0
0
0
0
PVOE
0
0
0
–
PVOV
0
0
0
–
DIEOE
DAEN
ADC10D
ADC9D
ADC8D
DIEOV
0
0
0
0
DI
AIO
–
ADC10 Amp1
ADC9 Amp1+
ADC8 Amp1-
ACMPN3