DSPIC30F2011AT-30ESLASHPF datasheet(81/228 Pages) MICROCHIP

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DS70117F-page 79

dsPIC30F6011/6012/6013/6014

11.0

TIMER4/5 MODULE

This section describes the second 32-bit General Pur-

pose Timer module (Timer4/5) and associated opera-

tional modes. Figure 11-1 depicts the simplified block

diagram of the 32-bit Timer4/5 module. Figure 11-2 and

Figure 11-3 show Timer4/5 configured as two indepen-

dent 16-bit timers, Timer4 and Timer5, respectively.

The Timer4/5 module is similar in operation to the

Timer2/3 module. However, there are some differences

which are as follows:

• The Timer4/5 module does not support the ADC

event trigger feature

• Timer4/5 can not be utilized by other peripheral

modules, such as input capture and

output compare

The operating modes of the Timer4/5 module are deter-

mined by setting the appropriate bit(s) in the

16-bit

T4CON and T5CON SFRs.

For 32-bit timer/counter operation, Timer4 is the lsw

and Timer5 is the msw of the 32-bit timer.

FIGURE 11-1:

32-BIT TIMER4/5 BLOCK DIAGRAM

Note: This data sheet summarizes features of this group

of dsPIC30F devices and is not intended to be a complete

reference source. For more information on the CPU,

peripherals, register descriptions and general device

functionality, refer to the “dsPIC30F Family Reference

Manual” (DS70046).

Note:

For 32-bit timer operation, T5CON control

bits are ignored. Only T4CON control bits

are used for setup and control. Timer4

clock and gate inputs are utilized for the

32-bit timer module but an interrupt is gen-

erated with the Timer5 interrupt flag (T5IF)

and the interrupt is enabled with the

Timer5 interrupt enable bit (T5IE).

TMR5

TMR4

T5IF

Equal

Comparator x 32

PR5

PR4

Reset

LSB

MSB

Event Flag

Note:

Timer Configuration bit T45 (T4CON<3>) must be set to ‘1’ for a 32-bit timer/counter operation. All control

bits are respective to the T4CON register.

Data Bus<15:0>

TMR5HLD

Read TMR4

Write TMR4

TGATE (T4CON<6>)

(T4CON<6>)

TGATE

TON

TCKPS<1:0>

Prescaler

1, 8, 64, 256

TCY

1 x

0 1

0 0

Gate

T4CK

Sync

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