AT91FR40162SB-CU-999 Atmel, AT91FR40162SB-CU-999 Datasheet - Page 94

• Manufacturer Part Number: AT91FR40162SB-CU-999
• Description: IC MCU 32BIT RISC 121BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91FR40162SB-CU-999

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 75MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 2MB (1M x 16)
• Program Memory Type: FLASH
• Ram Size: 256K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 121-BGA
• Data Bus Width: 32 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

15.4
15.5
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Interrupts
User Interface
AT91FR40162SB
Each parallel I/O can be programmed to generate an interrupt when a level change occurs. This
is controlled by the PIO_IER (Interrupt Enable) and PIO_IDR (Interrupt Disable) registers which
enable/disable the I/O interrupt by setting/clearing the corresponding bit in the PIO_IMR. When
a change in level occurs, the corresponding bit in the PIO_ISR (Interrupt Status) is set whether
the pin is used as a PIO or a peripheral and whether it is defined as input or output. If the corre-
sponding interrupt in PIO_IMR (Interrupt Mask) is enabled, the PIO interrupt is asserted.
When PIO_ISR is read, the register is automatically cleared.
Each individual I/O is associated with a bit position in the Parallel I/O user interface registers.
Each of these registers are 32 bits wide. If a parallel I/O line is not defined, writing to the corre-
sponding bits has no effect. Undefined bits read zero.
6410B–ATARM–12-Jan-10