Microchip Technology dsPIC33F Family Manual de usuario descargar pdf (Pagina 5)

Section 11. Timers

Timers

11.2.3 Type C Timer

Timer3, Timer5, Timer7 and Timer9, if present, are Type C timers. A Type C timer has the

following specific features:

• It can be concatenated with a Type B timer to form a 32-bit timer.

• At least one Type C timer has the ability to trigger an Analog-to-Digital (A/D) conversion.

• The external clock input (TxCK) is always synchronized to the internal device clock. The

clock synchronization is performed using TxCK, after which this synchronized clock is

divided by the prescaler.

Figure 11-3 shows a block diagram of the Type C timer.

Figure 11-3: Type C Timer Block Diagram

TGATE

TCS

TMRx

Comparator

PRx

TGATE

Set TxIF Flag

Sync

Equal

Reset

Prescaler

(/n)

TCKPS<1:0>

Gate

Sync

FCY

(1)

Falling Edge

Detect

Prescaler

(/n)

TCKPS<1:0>

Latch

CLK

DATA

TXCK

ADC Start of

Conversion Trigger

(2)

Note 1: FCY is the instruction cycle clock.

2: ADC trigger is only available on TMR3 and TMR5.

1 2 3 4 5 6 7 8 9 10 ... 25 26

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Microchip Technology dsPIC33F Family Manual de usuario Pagina 5

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