DSPIC33FJ32GP302THSLASHSP datasheet(189/403 Pages) MICROCHIP

189 / 403 page

 2009 Microchip Technology Inc.

Preliminary

DS70292D-page 189

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04

13.0

TIMER2/3 AND TIMER4/5

FEATURE

Timer2 and Timer4 are Type B timers with the following

specific features:

• A Type B timer can be concatenated with a Type

C timer to form a 32-bit timer

• The external clock input (TxCK) is always

synchronized to the internal device clock and the

clock synchronization is performed after the

prescaler.

A block diagram of the Type B timer is shown in

Figure 13-1.

Timer3 and Timer5 are Type C timers with the following

specific features:

• A Type C timer 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 A/D conversion.

• The external clock input (TxCK) is always syn-

chronized to the internal device clock and the

clock synchronization is performed before the

prescaler

A block diagram of the Type C timer is shown in

Figure 13-2.

FIGURE 13-1:

TYPE B TIMER BLOCK DIAGRAM (x = 2 or 4)

FIGURE 13-2:

TYPE C TIMER BLOCK DIAGRAM (x = 3 or 5)

Note 1: This data sheet summarizes the features

the

dsPIC33FJ32GP302/304,

dsPIC33FJ64GPX02/X04,

and

dsPIC33FJ128GPX02/X04

families

devices. It is not intended to be a compre-

hensive reference source. To comple-

ment the information in this data sheet,

refer to “Section 11. Timers” (DS70205)

of the “dsPIC33F/PIC24H Family Refer-

ence Manual”, which is available from the

Microchip website (www.microchip.com).

2: Some registers

and

associated bits

described in this section may not be avail-

able on all devices. Refer to Section 4.0

“Memory Organization” in this data

sheet for device-specific register and bit

information.

Prescaler

(/n)

TGATE

TCS

TMRx

Comparator

PRx

TGATE

Set TxIF flag

Sync

TCKPS<1:0>

Equal

Reset

TxCK

Gate

Sync

FCY

Falling Edge

Detect

Prescaler

(/n)

TCKPS<1:0>

Prescaler

(/n)

Gate

Sync

TGATE

TCS

TMRx

Comparator

PRx

FCY

TGATE

Falling Edge

Detect

Set TxIF flag

Sync

TCKPS<1:0>

Equal

Reset

TxCK

ADC SOC Trigger

Prescaler

(/n)

TCKPS<1:0>

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