ST72621L4M1(2002) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72621L4M1
(Rev.:2002)

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

STMicroelectronics 

ST7262

10.2 PWM AUTO-RELOAD TIMER (ART)

10.2.1 Introduction

The Pulse Width Modulated Auto-Reload Timer

on-chip peripheral consists of an 8-bit auto reload

counter with compare/capture capabilities and of a

7-bit prescaler clock source.

These resources allow five possible operating

modes:

– Generation of up to 4 independent PWM signals

– Output compare and Time base interrupt

– Up to two input capture functions

– External event detector

– Up to two external interrupt sources

The three first modes can be used together with a

single counter frequency.

The timer can be used to wake up the MCU from

WAIT and HALT modes.

Figure 31. PWM Auto-Reload Timer Block Diagram

PWMCR

OEx

PWMx

PORT

ALTERNATE

FUNCTION

OPx

POLARITY

CONTROL

OCRx

REGISTER

LOAD

COMPARE

PWMDCRx

REGISTER

ARTARR

REGISTER

8-BIT COUNTER

(ARTCAR REGISTER)

LOAD

ARTICx

INPUT CAPTURE

CONTROL

LOAD

ARTICRx

REGISTER

ARTCLK

ICSx

ICIEx

ICFx

ARTICCSR

fEXT

fCPU

fCOUNTER

ICx INTERRUPT

MUX

fINPUT

PROGRAMMABLE

PRESCALER

EXCL CC2 CC1 CC0 TCE FCRL OIE OVF ARTCSR

OVF INTERRUPT

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