Datasheet
© 2011 Microchip Technology Inc. DS70116J-page 73
dsPIC30F5011/5013
11.0 TIMER4/5 MODULE
This section describes the second 32-bit General Pur-
pose (GP) 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 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 least
significant word and Timer5 is the most significant 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 T32 (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
16
16
16
Q
QD
CK
TGATE (T4CON<6>)
(T4CON<6>)
TGATE
0
1
TON
TCKPS<1:0>
Prescaler
1, 8, 64, 256
2
T
CY
TCS
1
x
0
1
TGATE
0
0
Gate
T4CK
Sync
Sync