MA300012 Microchip Technology, MA300012 Datasheet - Page 27

• Manufacturer Part Number: MA300012
• Description: MODULE DSPIC30F SAMPLE 64QFP
• Manufacturer: Microchip Technology

Specifications of MA300012

• Module/board Type: dsPIC30F Plug-in Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: DM240001
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

9.2
The General Purpose (GP) Timer modules provide the
time base elements for Input Capture and Output
Compare/PWM. They can be configured for real-time
clock operation as well as various timer/counter
modes. The timer modes count pulses of the internal
time base, whereas counter modes count external
pulses that appear on the Timer Clock pin.
The dsPIC30F device supports up to five 16-bit timers
(Timer1 through Timer5). Four of the 16-bit timers can
be configured as two 32-bit timers (Timer2/3 and 4/5).
Each timer has several selectable operating modes.
9.2.1
The Timer1 module (Figure 9-1) is a 16-bit timer that
can serve as the time counter for an asynchronous
real-time clock, or operate as a free-running interval
timer/counter. The 16-bit timer has the following
modes:
• 16-bit Timer
• 16-bit Synchronous Counter
• 16-bit Asynchronous Counter
FIGURE 9-1:
© 2005 Microchip Technology Inc.
General Purpose Timer Modules
SOSCO/
T1IF
Event Flag
SOSCI
TIMER1
T1CK
TGATE
16-BIT TIMER1 MODULE BLOCK DIAGRAM
0
1
Equal
Reset
LPOSCEN
Comparator x 16
TMR1
PR1
Q
Q
Gate
Sync
CK
T
CY
D
Further, the following operational characteristics are
supported:
• Timer gated by external pulse
• Selectable prescaler settings
• Timer operation during CPU Idle and Sleep
• Interrupt on 16-bit Period register match or falling
Timer1, when operating in Real-Time Clock (RTC)
mode, provides time of day and event time-stamping
capabilities. Key operational features of the RTC are:
• Operation from 32 kHz LP oscillator
• 8-bit prescaler
• Low power
• Real-Time Clock interrupts
TGATE
modes
edge of external gate signal
1 x
0 1
0 0
TON
TSYNC
1
0
TCKPS<1:0>
dsPIC30F
1, 8, 64, 256
Prescaler
Sync
2
DS70043F-page 25