C8051F700-TB Silicon Laboratories Inc, C8051F700-TB Datasheet - Page 289

• Manufacturer Part Number: C8051F700-TB
• Description: BOARD PROTOTYPE WITH C8051F700
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F700-TB

• Accessory Type: Target Board
• Processor To Be Evaluated: C8051F700
• Processor Series: C8051F7xx
• Interface Type: USB
• Operating Supply Voltage: 7 V to 15 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F7xx
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1637; C8051F700

34.3.2. Software Timer (Compare) Mode
In Software Timer mode, the PCA counter/timer value is compared to the module's 16-bit capture/compare
register (PCA0CPHn and PCA0CPLn). When a match occurs, the Capture/Compare Flag (CCFn) in
PCA0CN is set to logic 1. An interrupt request is generated if the CCFn interrupt for that module is
enabled. The CCFn bit is not automatically cleared by hardware when the CPU vectors to the interrupt ser-
vice routine, and must be cleared by software. Setting the ECOMn and MATn bits in the PCA0CPMn regis-
ter enables Software Timer mode.
Important Note About Capture/Compare Registers: When writing a 16-bit value to the PCA0 Cap-
ture/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.
PCA0CPLn
Write to
Reset
PCA0CPHn
Write to
0
ENB
ENB
1
W
M
P
1
6
n
Figure 34.5. PCA Software Timer Mode Diagram
x
E
C
O
M
n
PCA0CPMn
C
A
P
P
n
0 0
C
A
P
N
n
M
A
T
n
O
G
T
n
0 0
W
M
P
n
C
C
E
F
n
x
Enable
PCA
Timebase
Rev. 1.0
PCA0CPLn
PCA0L
16-bit Comparator
PCA0CPHn
PCA0H
C8051F70x/71x
Match
C
F
C
R
PCA0CN
0
1
C
C
F
2
C
C
F
1
C
C
F
0
PCA Interrupt
289