M55800A Atmel Corporation, M55800A Datasheet - Page 101
M55800A
Manufacturer Part Number
M55800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M55800A.pdf
(29 pages)
4.M55800A.pdf
(256 pages)
5.M55800A.pdf
(28 pages)
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
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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
–
101
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