Microchip Technology TDGL019 Data Sheet

© 2011-2014 Microchip Technology Inc.

DS60001168F-page 223

The Peripheral Module Disable (PMD) registers
provide a method to disable a peripheral module by
stopping all clock sources supplied to that module.
When a peripheral is disabled using the appropriate
PMD control bit, the peripheral is in a minimum power
consumption state. The control and status registers
associated with the peripheral are also disabled, so
writes to those registers do not have effect and read
values are invalid.

To disable a peripheral, the associated PMDx bit must
be set to ‘1’. To enable a peripheral, the associated
PMDx bit must be cleared (default). See 

 for

more information.

Disabling a peripheral module while it’s
ON bit is set, may result in undefined
behavior. The ON bit for the associated
peripheral module must be cleared prior to
disable a module via the PMDx bits.

ADC1

AD1MD

PMD1<0>

CTMU

CTMUMD

PMD1<8>

Comparator Voltage Reference

CVRMD

PMD1<12>

Comparator 1

CMP1MD

PMD2<0>

Comparator 2

CMP2MD

PMD2<1>

Comparator 3

CMP3MD

PMD2<2>

Input Capture 1

IC1MD

PMD3<0>

Input Capture 2

IC2MD

PMD3<1>

Input Capture 3

IC3MD

PMD3<2>

Input Capture 4

IC4MD

PMD3<3>

Input Capture 5

IC5MD

PMD3<4>

Output Compare 1

OC1MD

PMD3<16>

Output Compare 2

OC2MD

PMD3<17>

Output Compare 3

OC3MD

PMD3<18>

Output Compare 4

OC4MD

PMD3<19>

Output Compare 5

OC5MD

PMD3<20>

Timer1

T1MD

PMD4<0>

Timer2

T2MD

PMD4<1>

Timer3

T3MD

PMD4<2>

Timer4

T4MD

PMD4<3>

Timer5

T5MD

PMD4<4>

UART1

U1MD

PMD5<0>

UART2

U2MD

PMD5<1>

SPI1

SPI1MD

PMD5<8>

SPI2

SPI2MD

PMD5<9>

I2C1

I2C1MD

PMD5<16>

I2C2

I2C2MD

PMD5<17>

USB

USBMD

PMD5<24>

RTCC

RTCCMD

PMD6<0>

Reference Clock Output

REFOMD

PMD6<1>

PMP

PMPMD

PMD6<16>

Not all modules and associated PMDx bits are available on all devices. See 

 and 

 for the lists 

of available peripherals.

The module must not be busy after clearing the associated ON bit and prior to setting the USBMD bit.