DSPIC30F4012 Microchip Technology Inc., DSPIC30F4012 Datasheet - Page 75

• Manufacturer Part Number: DSPIC30F4012
• Description: Dspic30f4011/4012 Enhanced Flash 16-bit Digital Signal Controller
• Manufacturer: Microchip Technology Inc.

11.0
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.
FIGURE 11-1:
© 2007 Microchip Technology Inc.
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). For more information on the device
instruction set and programming, refer to the “dsPIC30F/
33F Programmer’s Reference Manual” (DS70157).
Note:
TIMER4/5 MODULE
Note:
Timer4 is a ‘Type B’ timer and Timer5 is a
‘Type C’ timer. Please refer to the
appropriate timer type in Section 24.0
“Electrical
document.
T5IF
Event Flag
T4CK
Timer configuration bit, T32 (T2CON<3>), must be set to ‘
control bits are respective to the T4CON register.
Data Bus<15:0>
32-BIT TIMER4/5 BLOCK DIAGRAM
Read TMR4
(T4CON<6>)
Write TMR4
TGATE
Characteristics”
0
1
Reset
Equal
16
TMR5HLD
Comparator x 32
MSB
TMR5
PR5
16
of
16
TMR4
LSB
PR4
Q
Q
this
CK
D
Gate
Sync
T
CY
TGATE(T4CON<6>)
The Timer4/5 module is similar in operation to the
Timer 2/3 module. However, there are some
differences, which are as follows:
• The Timer4/5 module does not support the ADC
• Timer4/5 can not be utilized by other peripheral
The operating modes of the Timer4/5 module are
determined 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 word
of the 32-bit timer.
event trigger feature
modules such as input capture and output compare
Note:
dsPIC30F4011/4012
1
1 x
0 1
0 0
’ for a 32-bit timer/counter operation. All
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).
Sync
TON
TCKPS<1:0>
1, 8, 64, 256
Prescaler
2
DS70135E-page 73