M42800A Atmel Corporation, M42800A Datasheet - Page 82
M42800A
Manufacturer Part Number
M42800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M42800A.pdf
(224 pages)
4.M42800A.pdf
(27 pages)
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
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Table 14-1.
14.1
82
Interrupt Source
Hardware Interrupt Vectoring
AT91M42800A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
AIC Interrupt Sources
The hardware interrupt vectoring reduces the number of instructions to reach the interrupt
handler to only one. By storing the following instruction at address 0x00000018, the processor
Interrupt Name
SPIA
SPIB
PIOA
PIOB
IRQ3
IRQ2
IRQ1
IRQ0
PMC
US0
US1
TC0
TC1
TC2
TC3
TC4
TC5
FIQ
SW
ST
–
–
–
–
–
–
–
–
–
–
–
–
Interrupt Description
Fast Interrupt
Soft Interrupt (generated by the AIC)
USART Channel 0 interrupt
USART Channel 1 interrupt
SPI Channel A Interrupt
SPI Channel B Interrupt
Timer Channel 0 Interrupt
Timer Channel 1 Interrupt
Timer Channel 2 Interrupt
Timer Channel 3 Interrupt
Timer Channel 4 Interrupt
Timer Channel 5 Interrupt
System Timer Interrupt
Parallel I/O Controller A Interrupt
Parallel I/O Controller B Interrupt
Power Management Controller Interrupt
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
External Interrupt 3
External Interrupt 2
External Interrupt 1
External Interrupt 0
1779D–ATARM–14-Apr-06
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