33FJ128GP310 datasheet(26/90 Pages) MICROCHIP

26 / 90 page

dsPIC33F

DS70155C-page 24

Preliminary

FIGURE 8-1:

16-BIT TIMER1 MODULE BLOCK DIAGRAM

8.2.2

TIMER2/3

The Timer2/3 module is a 32-bit timer (which can be

configured as two 16-bit timers) with selectable

operating modes. These timers are used by other

peripheral modules, such as:

• Input Capture

• Output Compare/Simple PWM

Timer2/3 has the following modes:

• Two independent 16-bit timers (Timer2 and

Timer3) with Timer and Synchronous Counter

modes

• Single 32-Bit Timer

• Single 32-Bit Synchronous Counter

Further, the following operational characteristics are

supported:

• ADC conversion start trigger

• 32-bit timer gated by external pulse

• Selectable prescaler settings

• Timer counter operation during Idle and Sleep

modes

• Interrupt on a 32-Bit Period register match

• Timer2/3 can use DMA for buffer storage

8.2.3

TIMER4/5, TIMER6/7, TIMER8/9

The Timer4/5, Timer6/7 and Timer8/9 modules are

similar in operation to the Timer2/3 module. Differences

include:

• These modules do not support the ADC event

trigger feature

• These modules can not be used by other

peripheral modules, such as input capture and

output compare

8.3

Motor Control PWM Module

The Motor Control PWM (MCPWM) module simplifies

the task of generating multiple, synchronized pulse-

width modulated outputs. In particular, the following

power and motion control applications are supported:

• Three-Phase AC Induction Motor

• Switched Reluctance (SR) Motor

• Brushless DC (BLDC) Motor

• Uninterrupted Power Supply (UPS)

TON

Sync

SOSCI

SOSCO/

PR1

T1IF

Equal

Comparator x 16

TMR1

Reset

LPOSCEN

Event Flag

TSYNC

TGATE

TCKPS<1:0>

Prescaler

1, 8, 64, 256

TGATE

TCY

T1CK

1 x

0 1

0 0

Gate

Sync

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