M42800A Atmel Corporation, M42800A Datasheet - Page 129
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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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Output Controller
Status
1354D–ATARM–08/02
The output controller defines the output level changes on TIOA and TIOB following an
event. TIOB control is used only if TIOB is defined as output (not as an external event).
The following events control TIOA and TIOB: software trigger, external event and RC
compare. RA compare controls TIOA and RB compare controls TIOB. Each of these
events can be programmed to set, clear or toggle the output as defined in the corre-
sponding parameter in TC_CMR.
The tables below show which parameter in TC_CMR is used to define the effect of each
event.
If two or more events occur at the same time, the priority level is defined as follows:
1. Software Trigger
2. External Event
3. RC Compare
4. RA or RB Compare
The following bits in the status register are significant in Waveform Mode:
•
•
•
•
•
Note:
Parameter
ASWTRG
AEEVT
ACPC
ACPA
Parameter
BSWTRG
BEEVT
BCPC
BCPB
CPAS: RA Compare Status
There has been a RA Compare match at least once since the last read of the status
CPBS: RB Compare Status
There has been a RB Compare match at least once since the last read of the status
CPCS: RC Compare Status
There has been a RC Compare match at least once since the last read of the status
COVFS: Counter Overflow
Counter has attempted to count past $FFFF since the last read of the status
ETRGS: External Trigger
External trigger has been detected since the last read of the status
All the status bits are set when the corresponding event occurs and they are automati-
cally cleared when the Status Register is read.
TIOA Event
Software Trigger
External Event
RC Compare
RA Compare
TIOB Event
Software Trigger
External Event
RC Compare
RB Compare
AT91X40 Series
129
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