atmega103 ATMEL Corporation, atmega103 Datasheet - Page 103

• Manufacturer Part Number: atmega103
• Description: Atmega103 8-bit With 128k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Port F
Port F Input Pins Address –
PINF
0945I–AVR–02/07
Port F is an 8-bit input port.
One I/O memory location is allocated for Port F, the Port F Input Pins – PINF, $00 ($20).
All Port F pins are connected to the analog multiplexer, which further is connected to the
A/D converter. The digital input function of Port F can be used together with the A/D
converter, allowing the user to use some pins of Port F and digital inputs and other as
analog inputs, at the same time.
The Port F Input Pins address (PINF) is not a register; this address enables access to
the physical value on each Port F pin.
Figure 71. Port F Schematic Diagram (Pins PF7 - PF0)
Bit
$00 ($20)
Read/Write
Initial Value
PFn
PINF7
N/A
R
7
RP:
n:
READ PORTF PIN
0 - 7
PINF6
N/A
R
6
PINF5
N/A
R
5
PINF4
N/A
R
4
PINF3
RP
N/A
3
R
PINF2
N/A
2
R
TO ADC MUX
ATmega103(L)
PINF1
N/A
R
1
AINn
PINF0
N/A
R
0
PINF
103