PIC12F609T-I/P View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC12F609T-I/P Datasheet PDF : 212 Pages
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PIC12F609/615/617/12HV609/615
11.0 ENHANCED CAPTURE/
COMPARE/PWM (WITH AUTO-
SHUTDOWN AND DEAD BAND)
MODULE (PIC12F615/617/
HV615 ONLY)
The Enhanced Capture/Compare/PWM module is a
peripheral which allows the user to time and control
different events. In Capture mode, the peripheral
allows the timing of the duration of an event.The
Compare mode allows the user to trigger an external
event when a predetermined amount of time has
expired. The PWM mode can generate a Pulse-Width
Modulated signal of varying frequency and duty cycle.
Table 11-1 shows the timer resources required by the
ECCP module.
TABLE 11-1: ECCP MODE – TIMER
RESOURCES REQUIRED
ECCP Mode
Timer Resource
Capture
Compare
PWM
Timer1
Timer1
Timer2
REGISTER 11-1: CCP1CON: ENHANCED CCP1 CONTROL REGISTER
R/W-0
P1M
bit 7
U-0
R/W-0
R/W-0
R/W-0
R/W-0
—
DC1B1
DC1B0
CCP1M3
CCP1M2
R/W-0
CCP1M1
R/W-0
CCP1M0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
bit 6
bit 5-4
bit 3-0
P1M: PWM Output Configuration bits
If CCP1M<3:2> = 00, 01, 10:
x = P1A assigned as Capture/Compare input; P1B assigned as port pins
If CCP1M<3:2> = 11:
0 = Single output; P1A modulated; P1B assigned as port pins
1 = Half-Bridge output; P1A, P1B modulated with dead-band control
Unimplemented: Read as ‘0’
DC1B<1:0>: PWM Duty Cycle Least Significant bits
Capture mode:
Unused.
Compare mode:
Unused.
PWM mode:
These bits are the two LSbs of the PWM duty cycle. The eight MSbs are found in CCPR1L.
CCP1M<3:0>: ECCP Mode Select bits
0000 =Capture/Compare/PWM off (resets ECCP module)
0001 =Unused (reserved)
0010 =Compare mode, toggle output on match (CCP1IF bit is set)
0011 =Unused (reserved)
0100 =Capture mode, every falling edge
0101 =Capture mode, every rising edge
0110 =Capture mode, every 4th rising edge
0111 =Capture mode, every 16th rising edge
1000 =Compare mode, set output on match (CCP1IF bit is set)
1001 =Compare mode, clear output on match (CCP1IF bit is set)
1010 =Compare mode, generate software interrupt on match (CCP1IF bit is set, CCP1 pin is unaffected)
1011 =Compare mode, trigger special event (CCP1IF bit is set; CCP1 resets TMR1 or TMR2 and starts
an A/D conversion, if the ADC module is enabled)
1100 =PWM mode; P1A active-high; P1B active-high
1101 =PWM mode; P1A active-high; P1B active-low
1110 =PWM mode; P1A active-low; P1B active-high
1111 =PWM mode; P1A active-low; P1B active-low
2010 Microchip Technology Inc.
DS41302D-page 89
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