Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
50
11.2
Peripheral Signal Multiplexing on I/O Lines
The SAM4S features two PIO controllers on 64-pin versions (PIOA and PIOB) or three PIO controllers on the 100-
pin version (PIOA, PIOB and PIOC), that multiplex the I/O lines of the peripheral set.
The SAM4S 64-pin and 100-pin PIO controllers control up to 32 lines. Each line can be assigned to one of three
The SAM4S 64-pin and 100-pin PIO controllers control up to 32 lines. Each line can be assigned to one of three
peripheral functions: A, B or C. The multiplexing tables in the following paragraphs define how the I/O lines of the
peripherals A, B and C are multiplexed on the PIO Controllers. The column “Comments” has been inserted in this
table for the user’s own comments; it may be used to track how pins are defined in an application.
Note that some peripheral functions which are output only, might be duplicated within the tables.
Note that some peripheral functions which are output only, might be duplicated within the tables.
31
PWM
X
X
Pulse Width Modulation
32
CRCCU
X
X
CRC Calculation Unit
33
ACC
X
X
Analog Comparator
34
UDP
X
X
USB Device Port
Table 11-1.
Peripheral Identifiers (Continued)
Instance ID
Instance Name
NVIC Interrupt
PMC
Clock Control
Instance Description