C8051F343-GMR Silicon Labs, C8051F343-GMR Datasheet - Page 257
C8051F343-GMR
Manufacturer Part Number
C8051F343-GMR
Description
8-bit Microcontrollers - MCU 48 MIPS 32KB 10 ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F349-GMR.pdf
(276 pages)
Specifications of C8051F343-GMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
- Current page: 257 of 276
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22.2. Capture/Compare Modules
Each module can be configured to operate independently in one of six operation modes: Edge-triggered
Capture, Software Timer, High Speed Output, Frequency Output, 8-Bit Pulse Width Modulator, or 16-Bit
Pulse Width Modulator. Each module has Special Function Registers (SFRs) associated with it in the
CIP-51 system controller. These registers are used to exchange data with a module and configure the
module's mode of operation.
Table 22.2 summarizes the bit settings in the PCA0CPMn registers used to select the PCA capture/com-
pare module’s operating modes. Setting the ECCFn bit in a PCA0CPMn register enables the module's
CCFn interrupt. Note: PCA0 interrupts must be globally enabled before individual CCFn interrupts are rec-
ognized. PCA0 interrupts are globally enabled by setting the EA bit and the EPCA0 bit to logic 1. See
Figure 22.3 for details on the PCA interrupt configuration.
PWM16 ECOM CAPP CAPN MAT
X
X
X
X
X
X
0
1
Table 22.2. PCA0CPM Register Settings for PCA Capture/Compare Modules
Timer Overflow
PCA Counter/
X = Don’t Care
W
M
P
1
6
n
PCA Module 0
PCA Module 1
PCA Module 2
PCA Module 3
PCA Module 4
(for n = 0 to 4)
PCA0CPMn
E
C
O
M
n
X
X
X
1
1
1
1
1
C
A
P
P
n
(CCF0)
(CCF1)
(CCF2)
(CCF3)
(CCF4)
C
A
P
N
n
M
A
T
n
O
G
T
n
W
M
P
n
E
C
C
F
n
1
0
1
0
0
0
0
0
C
F
C
R
PCA0CN
Figure 22.3. PCA Interrupt Block Diagram
C
C
F
4
C
C
F
3
C
C
F
2
0
1
1
0
0
0
0
0
C
C
F
1
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
C
C
F
0
ECCF0
ECCF1
ECCF2
ECCF3
ECCF4
C
D
L
I
W
D
T
E
PCA0MD
X
X
X
W
D
C
0
0
0
1
1
L
K
C
P
S
2
C
P
S
1
0
1
0
1
0
1
0
1
0
1
C
P
S
0
TOG
E
C
F
0
0
1
0
0
0
0
1
0
1
Rev. 1.3
PWM ECCF
0
0
0
0
0
1
1
1
X
X
X
X
X
X
X
X
Capture triggered by positive edge on
CEXn
Capture triggered by negative edge on
CEXn
Capture triggered by transition on CEXn
Software Timer
High Speed Output
Frequency Output
8-Bit Pulse Width Modulator
16-Bit Pulse Width Modulator
EPCA0
Operation Mode
0
1
EA
0
1
Interrupt
Priority
Decoder
257
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