PIC12F1822T-I/SL 查看數據表（PDF） - Microchip Technology

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PIC12F1822T-I/SL

8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC12F/LF1822/16F/LF1823

23.4.6 PWM STEERING MODE

In Single Output mode, PWM steering allows any of the

PWM pins to be the modulated signal. Additionally, the

same PWM signal can be simultaneously available on

multiple pins.

Once the Single Output mode is selected

(CCP1M<3:2> = 11 and P1M<1:0> = 00 of the

CCP1CON register), the user firmware can bring out

the same PWM signal to one, two, three or four output

pins by setting the appropriate STR1 bits of the

PSTR1CON register, as shown in Table 23-8.

Note:

The associated TRIS bits must be set to

output (‘0’) to enable the pin output driver

in order to see the PWM signal on the pin.

While the PWM Steering mode is active, the

CCP1M<1:0> bits of the CCP1CON register determine

the polarity of the output pins.

The PWM auto-shutdown operation also applies to

PWM Steering mode as described in Section 23.4.3

“Enhanced PWM Auto-shutdown mode”. An auto-

shutdown event will only affect pins that have PWM

outputs enabled.

FIGURE 23-18:

STR1A

P1A Signal

CCP1M1

PORT Data

STR1B

SIMPLIFIED STEERING

BLOCK DIAGRAM

P1A pin

1

0

TRIS

CCP1M0

1

P1B pin

PORT Data

STR1C

0

TRIS

CCP1M1

PORT Data

STR1D

1

P1C pin(3)

0

TRIS

CCP1M0

1

P1D pin(3)

PORT Data

0

TRIS

Note 1:

2:

3:

Port outputs are configured as shown when

the CCP1CON register bits P1M<1:0> = 00

and CCP1M<3:2> = 11.

Single PWM output requires setting at least

one of the STR1 bits.

PIC16F/LF1823 only.

DS41413A-page 218

Preliminary

 2010 Microchip Technology Inc.

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