AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 265

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

24. Power Management Controller (PMC)
24.1
6048B–ATARM–29-Jun-06
Description
The AT91SAM7A1 Power Management Controller allows optimization of power consumption.
The PMC controls the clock inputs of the ARM core and of the PDC module.
When the ARM core clock is disabled, the current instruction is finished before the clock is
stopped. The clock can be re-enabled by any interrupt or by any hardware reset.
The PDC clock cannot be stopped during PDC transfers (if any TCR register is different from
0). The request is stored but the Power Management Controller will wait until the end of the
transfers to stop the PDC clock (the Power Management Controller needs an authorization
from the PDC before it stops the PDC clock).
AT91SAM7A1
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