M55800A Atmel Corporation, M55800A Datasheet - Page 101

• Manufacturer Part Number: M55800A
• Manufacturer: Atmel Corporation

Specifications of M55800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 176
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 58
• Ext Interrupts: 58
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 72
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• 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

1745F–ATARM–06-Sep-07
The following table shows the main steps of an interrupt and the order in which they are per-
formed according to the mode:
Notes:
Action
Calculate active interrupt
(higher than current or spurious)
Determine and return the vector of the
active interrupt
Memorize interrupt
Push on internal stack the current priority
level
Acknowledge the interrupt
No effect
1. NIRQ de-assertion and automatic interrupt clearing if the source is programmed as level
2. Note that software which has been written and debugged using Protect Mode will run correctly
(2)
sensitive
in Normal Mode without modification. However in Normal Mode the AIC_IVR write has no
effect and can be removed to optimize the code.
(1)
Read AIC_IVR
Read AIC_IVR
Read AIC_IVR
Read AIC_IVR
Read AIC_IVR
Write AIC_IVR
Normal Mode
AT91M5880A
Read AIC_IVR
Read AIC_IVR
Read AIC_IVR
Write AIC_IVR
Write AIC_IVR
Protect Mode
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