ATTINY20-EK1 Atmel, ATTINY20-EK1 Datasheet - Page 49

• Manufacturer Part Number: ATTINY20-EK1
• Description: KIT EVAL TOUCH ATTINY20
• Manufacturer: Atmel

Specifications of ATTINY20-EK1

• Sensor Type: *
• Sensing Range: *
• Interface: *
• Sensitivity: *
• Voltage - Supply: *
• Embedded: *
• Utilized Ic / Part: *
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: TinyAVR
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Mcu Supported Families: ATtiny20
• Tool / Board Applications: Microcontroller
• Rohs Compliant: Yes
• Tool Type: Development Kit
• Cpu Core: AVR 8
• Data Bus Width: 8 bit
• Processor To Be Evaluated: ATtiny20
• Interface Type: Touch
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.2.7
10.3
8235B–AVR–04/11
Alternate Port Functions
Program Example
The following code example shows how to set port B pin 0 high, pin 1 low, and define the port
pins from 2 to 3 as input with a pull-up assigned to port pin 2. The resulting pin values are read
back again, but as previously discussed, a nop instruction is included to be able to read back the
value recently assigned to some of the pins.
Note:
Most port pins have alternate functions in addition to being general digital I/Os. In
below is shown how the port pin control signals from the simplified
be overridden by alternate functions.
Assembly Code Example
...
; Define pull-ups and set outputs high
; Define directions for port pins
ldi
ldi
ldi
out
out
out
; Insert nop for synchronization
nop
; Read port pins
in
...
See
“Code Examples” on page
r16,(1<<PUEB2)
r17,(1<<PB0)
r18,(1<<DDB1)|(1<<DDB0)
PUEB,r16
PORTB,r17
DDRB,r18
r16,PINB
6.
Figure 10-2 on page 45
ATtiny20
Figure 10-6
can
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