1. AT91SAM7X256 - PIO
YoonMo Yeon

2. Contents Atmel AT91SAM7X256 microcontroller PIO LED control example
Joystic control example
AT91SAM7X256 - PIO

3. AT91SAM7X256 ARM7TDMI ARM Thumb Processor
32-bit RISC Architecture
16-bit Instruction Set
256Kbytes Flash, 64Kbytes SRAM
AT91SAM7X256 - PIO

4. AT91SAM7X256
AT91SAM7X256 - PIO

5. AT91SAM7X256
AT91SAM7X256 - PIO

6. PIO Parallel Input/Output controller AT91SAM7X256
32 fully programmable input/output lines
General-Purpose I/O or embedded peripheral
Each I/O line is associated with a bit number in 32-bit registers
AT91SAM7X256
31 x 2 programmable I/O lines (PIOA, PIOB)
AT91SAM7X256 - PIO

7.
AT91SAM7X256 - PIO

8. PIO user interface registers
Enable/Disable and get current status
PIO
Output
Glitch Input Filter
Interrupt
Multi-driver
Pull-up
Output Write
AT91SAM7X256 - PIO

9. PIO user interface registers
Etc.
Set/Clear output
Get pin data status
Select Peripheral A or B
AT91SAM7X256 - PIO

10. LED control
Schematic
AT91SAM7X256 - PIO

11. LED control
AT91SAM7X256.h
board.h
AT91SAM7X256 - PIO

12. LED control
AT91SAM7X256 - PIO

13. Joystick control
Schematic
AT91SAM7X256 - PIO

14. Joystick control
AT91SAM7X256.h
board.h
AT91SAM7X256 - PIO

15.
AT91SAM7X256 - PIO