C8051F005-TB Silicon Laboratories Inc, C8051F005-TB Datasheet - Page 156
C8051F005-TB
Manufacturer Part Number
C8051F005-TB
Description
BOARD PROTOTYPING W/C8051F005
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F005-TB
Contents
Board
Data Bus Width
8 bit
Silicon Manufacturer
Silicon Laboratories
Core Architecture
8051
Silicon Family Name
C8051F00x
Kit Contents
Board
Features
JTAG Connector, Debug Adapter Interface, Analog I/O Configuration
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F005
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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20.1.1. Edge-triggered Capture Mode
In this mode, a valid transition on the CEXn pin causes the PCA to capture the value of the PCA 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 vectors to the interrupt service routine, and must be cleared by software.
Port I/O
Crossbar
Figure 20.3. PCA Capture Mode Diagram
CEXn
PCA0CPMn
E
C
O
M
n
0
Rev. 1.7
C
A
P
P
n
C
N
A
P
n
0
1
M
A
T
n
0 0 0
O
G
T
n
W
M
P
n
E
C
C
F
n
0
1
C
F
C
R
PCA0CN
C
C
F
4
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
C
C
F
3
PCA
Timebase
C
C
F
2
C
C
F
1
PCA Interrupt
C
C
F
0
Capture
PCA0CPLn
PCA0L
PCA0CPHn
PCA0H
156
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