AT89C51CC03CA-7CTUM ATMEL [ATMEL Corporation], AT89C51CC03CA-7CTUM Datasheet - Page 143
AT89C51CC03CA-7CTUM
Manufacturer Part Number
AT89C51CC03CA-7CTUM
Description
Enhanced 8-bit MCU with CAN Controller and Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51CC03CA-7CTUM.pdf
(197 pages)
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Figure 67. PCA Timer/Counter
PCA Modules
4182K–CAN–05/06
Idle
FPca/2
T0 OVF
FPca/6
P1.2
The CMOD register includes three additional bits associated with the PCA.
•
•
•
The CCON register contains the run control bit for the PCA and the flags for the PCA
timer and each module.
•
•
•
Each one of the five compare/capture modules has six possible functions. It can
perform:
•
•
•
•
•
•
In addition module 4 can be used as a WatchDog Timer.
CIDL
CF
The CIDL bit which allows the PCA to stop during idle mode.
The WDTE bit which enables or disables the WatchDog function on module 4.
The ECF bit which when set causes an interrupt and the PCA overflow flag CF in
CCON register to be set when the PCA timer overflows.
The CR bit must be set to run the PCA. The PCA is shut off by clearing this bit.
The CF bit is set when the PCA counter overflows and an interrupt will be generated
if the ECF bit in CMOD register is set. The CF bit can only be cleared by software.
The CCF0:4 bits are the flags for the modules (CCF0 for module0...) and are set by
hardware when either a match or a capture occurs. These flags also can be cleared
by software.
16-bit Capture, positive-edge triggered
16-bit Capture, negative-edge triggered
16-bit Capture, both positive and negative-edge triggered
16-bit Software Timer
16-bit High Speed Output
8-bit Pulse Width Modulator.
WDTE
CR
CCF4 CCF3 CCF2 CCF1 CCF0
CPS1 CPS0
CH
16 bit up counter
ECF
CL
CMOD
0xD9
CCON
0xD8
overflow
AT89C51CC03
To PCA
modules
It
143
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