ATA6613 ATMEL Corporation, ATA6613 Datasheet - Page 101

• Manufacturer Part Number: ATA6613
• Description: Ata6613
• Manufacturer: ATMEL Corporation

6.10.3.3
9111C–AUTO–02/08
Alternate Functions of Port C
The Port C pins with alternate functions are shown in
Table 6-35.
The alternate pin configuration is as follows:
• RESET/PCINT14 – Port C, Bit 6
• SCL/ADC5/PCINT13 – Port C, Bit 5
RESET, Reset pin: When the RSTDISBL Fuse is programmed, this pin functions as a nor-
mal I/O pin, and the part will have to rely on Power-on Reset and Brown-out Reset as its
reset sources. When the RSTDISBL Fuse is unprogrammed, the reset circuitry is connected
to the pin, and the pin can not be used as an I/O pin.
If PC6 is used as a reset pin, DDC6, PORTC6 and PINC6 will all read 0.
PCINT14: Pin Change Interrupt source 14. The PC6 pin can serve as an external interrupt
source.
SCL, 2-wire Serial Interface Clock: When the TWEN bit in TWCR is set (one) to enable the
2-wire Serial Interface, pin PC5 is disconnected from the port and becomes the Serial Clock
I/O pin for the 2-wire Serial Interface. In this mode, there is a spike filter on the pin to sup-
press spikes shorter than 50 ns on the input signal, and the pin is driven by an open drain
driver with slew-rate limitation.
PC5 can also be used as ADC input Channel 5. Note that ADC input channel 5 uses digital
power.
PCINT13: Pin Change Interrupt source 13. The PC5 pin can serve as an external interrupt
source.
Port Pin
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Port C Pins Alternate Functions
Alternate Function
RESET (Reset pin)
PCINT14 (Pin Change Interrupt 14)
ADC5 (ADC Input Channel 5)
SCL (2-wire Serial Bus Clock Line)
PCINT13 (Pin Change Interrupt 13)
ADC4 (ADC Input Channel 4)
SDA (2-wire Serial Bus Data Input/Output Line)
PCINT12 (Pin Change Interrupt 12)
ADC3 (ADC Input Channel 3)
PCINT11 (Pin Change Interrupt 11)
ADC2 (ADC Input Channel 2)
PCINT10 (Pin Change Interrupt 10)
ADC1 (ADC Input Channel 1)
PCINT9 (Pin Change Interrupt 9)
ADC0 (ADC Input Channel 0)
PCINT8 (Pin Change Interrupt 8)
Table
6-35.
ATA6612/ATA6613
101