DSPIC30F0013CT-30E/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

DSPIC30F0013CT-30E/ML

High-Performance, 16-Bit Digital Signal Controllers

Microchip Technology 

dsPIC30F3014/4013

11.0 TIMER4/5 MODULE

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).

This section describes the second 32-bit general

purpose Timer module (Timer4/5) and associated

operational 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 independent 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 listed:

• 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.

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

generated with the Timer5 interrupt flag

(T5IF) and the interrupt is enabled with the

Timer5 interrupt enable bit (T5IE).

FIGURE 11-1:

32-BIT TIMER4/5 BLOCK DIAGRAM

Data Bus<15:0>

Write TMR4

Read TMR4

TMR5HLD

16

16

16

Reset

TMR5

MSB

TMR4

LSB

Equal

Comparator x 32

Sync

0

T5IF

Event Flag 1

TGATE

(T4CON<6>)

PR5

PR4

QD

Q CK

TGATE (T4CON<6>)

T4CK

Gate

Sync

TCY

TON

1x

01

00

TCKPS<1:0>

2

Prescaler

1, 8, 64, 256

Note:

Timer Configuration bit T32 (T4CON<3>) must be set to ‘1’ for a 32-bit timer/counter operation. All control

bits are respective to the T4CON register.

© 2007 Microchip Technology Inc.

DS70138E-page 73

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