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C8051F360 Datasheet(PDF) 268 Page - Silicon Laboratories

Part # C8051F360
Description  Mixed Signal ISP Flash MCU Family
PDF  288 Pages
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

C8051F360 Datasheet(HTML) 268 Page - Silicon Laboratories

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C8051F360/1/2/3/4/5/6/7/8/9
268
Rev. 1.0
22.2.2. Software Timer (Compare) Mode
In Software Timer mode, the PCA0 counter/timer is compared to the module's 16-bit capture/compare reg-
ister (PCA0CPHn and PCA0CPLn). When a match 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. Setting the ECOMn and MATn bits in the PCA0CPMn register enables Software
Timer mode.
Important Note About Capture/Compare Registers: When writing a 16-bit value to the PCA0 Capture/
Compare registers, the low byte should always be written first. Writing to PCA0CPLn clears the ECOMn bit
to ‘0’; writing to PCA0CPHn sets ECOMn to ‘1’.
Match
16-bit Comparator
PCA0H
PCA0CPHn
Enable
PCA0L
PCA
Timebase
PCA0CPLn
00
00
PCA
Interrupt
0
1
x
ENB
ENB
0
1
Write to
PCA0CPLn
Write to
PCA0CPHn
Reset
PCA0CPMn
P
W
M
1
6
n
E
C
O
M
n
E
C
C
F
n
T
O
G
n
P
W
M
n
C
A
P
P
n
C
A
P
N
n
M
A
T
n
x
PCA0CN
C
F
C
R
C
C
F
0
C
C
F
2
C
C
F
1
C
C
F
5
C
C
F
4
C
C
F
3
Figure 22.5. PCA Software Timer Mode Diagram



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