AT91M40800-33AI SL383 Atmel, AT91M40800-33AI SL383 Datasheet - Page 72

• Manufacturer Part Number: AT91M40800-33AI SL383
• Description: IC ARM MCU 16BIT 100TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M40800-33AI SL383

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: AT91M4080033AISL3

72
AT91X40 Series
Note:
SPSR, masking or unmasking the interrupts depending on the state saved in the
SPSR (the previous state of the ARM core).
The I bit in the SPSR is significant. If it is set, it indicates that the ARM core was just
about to mask IRQ interrupts when the mask instruction was interrupted. Hence, when
the SPSR is restored, the mask instruction is completed (IRQ is masked).
1354D–ATARM–08/02