C8051F020DK Silicon Laboratories Inc, C8051F020DK Datasheet - Page 253
![DEV KIT FOR F020/F021/F022/F023](/photos/9/23/92314/c8051f020dk_sml.jpg)
C8051F020DK
Manufacturer Part Number
C8051F020DK
Description
DEV KIT FOR F020/F021/F022/F023
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F020DK.pdf
(272 pages)
Specifications of C8051F020DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F020
Silicon Family Name
C8051F02x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051 F020/021/022/023
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1200
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F020DK
Manufacturer:
SiliconL
Quantity:
10
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23.2.1. Edge-triggered Capture Mode
In this mode, a valid transition on the CEXn pin causes PCA0 to capture the value of the PCA0 counter/timer and
load it into the corresponding module's 16-bit capture/compare register (PCA0CPLn and PCA0CPHn). The CAPPn
and CAPNn bits in the PCA0CPMn register are used to select the type of transition that triggers the capture: low-to-
high transition (positive edge), high-to-low transition (negative edge), or either transition (positive or negative edge).
When a capture occurs, the Capture/Compare Flag (CCFn) in PCA0CN is set to logic 1 and an interrupt request is
generated if CCF interrupts are enabled. The CCFn bit is not automatically cleared by hardware when the CPU vec-
tors to the interrupt service routine, and must be cleared by software.
Note: The CEXn input signal must remain high or low for at least 2 system clock cycles in order to be valid.
Port I/O
Crossbar
Figure 23.4. PCA Capture Mode Diagram
CEXn
W
P
M
1
6
n
PCA0CPMn
O
M
E
C
n
C
A
P
P
n
C
A
P
N
n
0
1
M
A
T
n
Rev. 1.4
T
O
G
n
W
M
P
n
E
C
C
F
n
0
1
C
F
C
R
PCA0CN
C
C
F
4
PCA
Timebase
C
C
F
3
C
C
F
2
C
C
C8051F020/1/2/3
F
1
PCA Interrupt
C
C
F
0
Capture
PCA0CPLn
PCA0L
PCA0CPHn
PCA0H
253
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