DSPIC33FJ06GS201TESLASHMM datasheet(185/346 Pages) MICROCHIP

185 / 346 page

Preliminary

DS70318D-page 183

dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04

11.0

TIMER1

The Timer1 module is a 16-bit timer, which can serve

as a time counter for the Real-Time Clock (RTC), or

operate as a free-running interval timer/counter.

The Timer1 module has the following unique features

over other timers:

• Can be operated from the low-power 32 kHz

crystal oscillator available on the device

• Can be operated in Asynchronous Counter mode

from an external clock source.

• The external clock input (T1CK) can optionally be

synchronized to the internal device clock and the

clock synchronization is performed after the

prescaler.

The unique features of Timer1 allow it to be used for

Real-Time Clock (RTC) applications. A block diagram

of Timer1 is shown in Figure 11-1.

The Timer1 module can operate in one of the following

modes:

• Timer mode

• Gated Timer mode

• Synchronous Counter mode

• Asynchronous Counter mode

In Timer and Gated Timer modes, the input clock is

derived from the internal instruction cycle clock (FCY).

In Synchronous and Asynchronous Counter modes,

the input clock is derived from the external clock input

at the T1CK pin.

The Timer modes are determined by the following bits:

• Timer Clock Source Control bit (TCS): T1CON<1>

• Timer Synchronization Control bit (TSYNC):

T1CON<2>

• Timer Gate Control bit (TGATE): T1CON<6>

The timer control bit settings for different operating

modes are given in the Table 11-1.

TABLE 11-1:

TIMER MODE SETTINGS

FIGURE 11-1:

16-BIT TIMER1 MODULE BLOCK DIAGRAM

Note:

This data sheet summarizes the features of

the

dsPIC33FJ06GS101/X02

and

dsPIC33FJ16GSX02/X04

families

devices. It is not intended to be a

comprehensive

reference

source.

complement the information in this data

sheet, refer to the “dsPIC33F Family

Reference Manual”

, Section 11. “Timers”

(DS70205), which is available from the

Microchip web site (www.microchip.com).

Mode

TCS

TGATE

TSYNC

Timer

Gated Timer

Synchronous

Counter

Asynchronous

Counter

TGATE

TCS

TMR1

Comparator

PR1

TGATE

Set T1IF Flag

TSYNC

Sync

Equal

Reset

T1CK

Prescaler

(/n)

TCKPS<1:0>

Gate

Sync

FCY

Falling Edge

Detect

Prescaler

(/n)

TCKPS<1:0>

DSPIC33FJ06GS201TE/MM Datasheet(PDF) 185 Page - Microchip Technology

DSPIC33FJ06GS201TE/MM Datasheet(HTML) 185 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL