C8051F530-TB Silicon Laboratories Inc, C8051F530-TB Datasheet - Page 200
C8051F530-TB
Manufacturer Part Number
C8051F530-TB
Description
BOARD PROTOTYPE W/C8051F530
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F530-TB.pdf
(218 pages)
Specifications of C8051F530-TB
Contents
Board
Processor To Be Evaluated
C8051F52xA and C8051F53xA
Interface Type
USB
Lead Free Status / RoHS Status
Vendor undefined / Vendor undefined
For Use With/related Products
C8051F530
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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C8051F52x/F52xA/F53x/F53xA
19.2.4. Frequency Output Mode
Frequency Output Mode produces a programmable-frequency square wave on the module’s associated
CEXn pin. The capture/compare module high byte holds the number of PCA clocks to count before the out-
put is toggled. The frequency of the square wave is then defined by Equation 19.1.
Where F
The lower byte of the capture/compare module is compared to the PCA counter low byte; on a match,
CEXn is toggled and the offset held in the high byte is added to the matched value in PCA0CPLn. Fre-
quency Output Mode is enabled by setting the ECOMn, TOGn, and PWMn bits in the PCA0CPMn register.
200
Note: A value of 0x00 in the PCA0CPHn register is equal to 256 for this equation.
W
M
P
1
6
n
0
PCA0CPMn
O
M
E
C
n
C
A
P
P
n
0 0 0
C
A
P
N
n
PCA
M
A
T
n
O
G
T
n
1
W
M
P
n
is the frequency of the clock selected by the CPS2-0 bits in the PCA mode register, PCA0MD.
E
C
C
F
n
0
PCA Timebase
Enable
Equation 19.1. Square Wave Frequency Output
Figure 19.7. PCA Frequency Output Mode
Comparator
PCA0CPLn
PCA0L
8-bit
F
CEXn
=
Rev. 1.3
---------------------------------------- -
2
match
Enable
Adder
PCA0CPHn
8-bit Adder
F
Toggle
PCA
TOGn
0
1
CEXn
PCA0CPHn
Crossbar
Port I/O
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