PIC16F1938_13 Datasheet, PDF(213/488 Page) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver

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PIC16F1938_13 Datasheet, PDF (213/488 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver

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PIC16(L)F1938/9

23.3.7 OPERATION IN SLEEP MODE

In Sleep mode, the TMRx register will not increment

and the state of the module will not change. If the CCPx

pin is driving a value, it will continue to drive that value.

When the device wakes up, TMRx will continue from its

previous state.

23.3.8 CHANGES IN SYSTEM CLOCK

FREQUENCY

The PWM frequency is derived from the system clock

frequency. Any changes in the system clock frequency

will result in changes to the PWM frequency. See

Section 5.0 âOscillator Module (With Fail-Safe

Clock Monitor)â for additional details.

23.3.9 EFFECTS OF RESET

Any Reset will force all ports to Input mode and the

CCP registers to their Reset states.

23.3.10 ALTERNATE PIN LOCATIONS

This module incorporates I/O pins that can be moved to

other locations with the use of the alternate pin function

register, APFCON. To determine which pins can be

moved and what their default locations are upon a

Reset, see Section 12.1 âAlternate Pin Functionâ for

more information.

TABLE 23-8: SUMMARY OF REGISTERS ASSOCIATED WITH STANDARD PWM

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Register

on Page

APFCON

CCPxCON

â

CCP3SEL T1GSEL P2BSEL SRNQSEL C2OUTSEL SSSEL

PxM<1:0>(1)

DCxB<1:0>

CCPxM<3:0>

CCP2SEL

CCPTMRS0

C4TSEL<1:0>

C3TSEL<1:0>

C2TSEL<1:0>

C1TSEL<1:0>

CCPTMRS1

â

â

â

â

â

â

C5TSEL<1:0>

INTCON

GIE

PEIE

TMR0IE

INTE

IOCIE TMR0IF

INTF

IOCIF

PIE1

TMR1GIE ADIE

RCIE

TXIE

SSPIE CCP1IE TMR2IE TMR1IE

PIE2

OSFIE

C2IE

C1IE

EEIE

BCLIE

LCDIE

â

CCP2IE

PIE3

â

CCP5IE CCP4IE CCP3IE TMR6IE

â

TMR4IE

â

PIR1

TMR1GIF ADIF

RCIF

TXIF

SSPIF CCP1IF TMR2IF TMR1IF

PIR2

OSFIF

C2IF

C1IF

EEIF

BCLIF

LCDIF

â

CCP2IF

PIR3

â

CCP5IF CCP4IF CCP3IF TMR6IF

â

TMR4IF

â

PRx

TxCON

Timer2/4/6 Period Register

â

TxOUTPS<3:0>

TMRxON

TxCKPS<:0>1

TMRx

Timer2/4/6 Module Register

TRISA

TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0

TRISB

TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0

TRISC

TRISD(2)

TRISE

TRISC7

TRISD7

â

TRISC6

TRISD6

â

TRISC5

TRISD5

â

TRISC4

TRISD4

â

TRISC3

TRISD3

â(3)

TRISC2

TRISD2

TRISE2(2)

TRISC1

TRISD1

TRISE1(2)

TRISC0

TRISD0

TRISE0(2)

Legend: â = Unimplemented location, read as â0â. Shaded cells are not used by the PWM.

Note 1: Applies to ECCP modules only.

2: These registers/bits are not implemented on PIC16(L)F1938 devices, read as â0â.

3: Unimplemented, read as â1â.

* Page provides register information.

123

228

229

230

90

91

92

93

94

95

96

201*

203

201

125

130

134

137

140

ï£ 2011-2013 Microchip Technology Inc.

DS40001574C-page 213

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