AT91M42800A-33AI Atmel, AT91M42800A-33AI Datasheet - Page 19

• Manufacturer Part Number: AT91M42800A-33AI
• Description: IC ARM7 MCU 144 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M42800A-33AI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: WDT
• Number Of I /o: 54
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91EB42 - KIT EVAL FOR ARM AT91M42800A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

8.5.3
1779ES–ATARM–14-Apr-06
SPI: Serial Peripheral Interface
internal interrupt signal that can be programmed to generate processor interrupts via the AIC
(Advanced Interrupt Controller).
The Timer/Counter block has two global registers that act upon all three TC channels. The Block
Control Register allows the three channels to be started simultaneously with the same instruc-
tion. The Block Mode Register defines the external clock inputs for each Timer/Counter channel,
allowing them to be chained.
Each Timer/Counter block operates independently and has a complete set of block and channel
registers.
The AT91M42800A includes two SPIs that provide communication with external devices in Mas-
ter or Slave mode. They are independent, and are referred to by the letters A and B. Each SPI
has four external chip selects that can be connected to up to 15 devices. The data length is pro-
grammable from 8- to 16-bit.
AT91M42800A
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