PAC5250 datasheet(63/70 Pages) ACTIVE-SEMI

63 / 70 page

PAC5250

Power Application Controller

19.2. Functional Description

The device includes 9 timers: timer A, timer B, timer C, timer D, watchdog timer 1 (WDT), watchdog timer 2, wake-up

timer, real-time clock (RTC), and SysTick timer. The device supports up to 14 different PWM signals and has up to 7 dead-

time controllers. Timers A, B, C and D can be concatenated to synchronize to a single clock and start/stop signal for

applications that require a synchronized timer period between timers.

19.2.1. Timer A

Timer A is a general purpose 16-bit timer with 8 PWM/capture and compare units. It has 4 pairs of PWM signals going into

4 dead-time controllers. Timer A can be concatenated with timers B, C, and D to synchronize the PWM/capture and

compare units. It can use either ACLK or HCLK as clock input with an additional clock divider from /1 to /128.

19.2.2. Timer B

Timer B is a general purpose 16-bit timer with 2 PWM/capture and compare units. It has one pair of PWM signals going

into one dead-time controller, as well as 2 additional compare units that can be used for additional system time bases for

interrupts. Timer B can be concatenated with timers A, C, and D to synchronize the PWM/capture and compare units. It can

use either ACLK or HCLK as clock input with an additional clock divider from /1 to /128.

19.2.3. Timer C

Timer C is a general purpose 16-bit timer with 2 PWM/capture and compare units. It has one pair of PWM signals going

into one dead-time controller. Timer C can be concatenated with timers A, B, and D to synchronize the PWM/capture and

compare units. It can use either ACLK or HCLK as clock input with an additional clock divider from /1 to /128.

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Rev 1.6‒January 28, 2016

Figure 19-2. SOC Bus Watchdog and Wake-Up Timer

SOC BUS

WATCHDOG

WAKE-UP

TIMER

SOC

SOC BUS

SOC BUS WATCHDOG AND WAKE-UP TIMER

Figure 19-3. Real-Time Clock and Watchdog Timer

WDT

24-BIT

RTC

24-BIT

REAL-TIME CLOCK AND WATCHDOG TIMER

PAC5250 Datasheet(PDF) 63 Page - Active-Semi, Inc