ATWEBDVK-02WC Atmel, ATWEBDVK-02WC Datasheet - Page 41
ATWEBDVK-02WC
Manufacturer Part Number
ATWEBDVK-02WC
Description
KIT DEV TCP/IP AT89C51RD2 WEBCAM
Manufacturer
Atmel
Series
@Webr
Datasheet
1.ATWEBDVK-02RC.pdf
(137 pages)
Specifications of ATWEBDVK-02WC
Main Purpose
*
Embedded
*
Utilized Ic / Part
AT89C51RD2
Primary Attributes
*
Secondary Attributes
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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4235K–8051–05/08
Table 13-4.
There are two additional registers associated with each of the PCA modules. They are CCAPnH
and CCAPnL and these are the registers that store the 16-bit count when a capture occurs or a
compare should occur. When a module is used in the PWM mode these registers are used to
control the duty cycle of the output (See Table 13-5 & Table 13-6).
Table 13-5.
CCAP0H - PCA Module 0 Compare/Capture Control Register High (0FAh)
CCAP1H - PCA Module 1 Compare/Capture Control Register High (0FBh)
CCAP2H - PCA Module 2 Compare/Capture Control Register High (0FCh)
CCAP3H - PCA Module 3 Compare/Capture Control Register High (0FDh)
CCAP4H - PCA Module 4 Compare/Capture Control Register High (0FEh)
Reset Value = 0000 0000b
Not bit addressable
ECOMn
Number
0
X
X
X
1
1
1
1
7 - 0
Bit
7
-
CAPPn
0
1
0
1
0
0
0
0
Mnemonic
PCA Module Modes (CCAPMn Registers)
CCAPnH Registers (n = 0 - 4)
Bit
6
-
-
CAPNn
0
0
1
1
0
0
0
0
Description
PCA Module n Compare/Capture Control
CCAPnH Value
MATn
5
-
0
0
0
0
1
1
0
1
TOGn
X
0
0
0
0
0
1
0
4
-
PWMm
0
0
0
0
0
0
1
0
3
-
ECCFn
X
X
X
X
X
X
0
0
AT89C51RD2/ED2
Module Function
16-bit capture by a positive-edge
trigger on CEXn
16-bit capture by a negative trigger on
CEXn
16-bit capture by a transition on CEXn
16-bit Software Timer/Compare mode.
16-bit High Speed Output
8-bit PWM
Watchdog Timer (module 4 only)
No Operation
2
-
1
-
0
-
41
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