M42800A Atmel Corporation, M42800A Datasheet - Page 19

• Manufacturer Part Number: M42800A
• Manufacturer: Atmel Corporation

Specifications of M42800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 54
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3/5.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

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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