ST7PLITEU09M3TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7PLITEU09M3TR

8-bit MCU with single voltage Flash memory, ADC, timers

STMicroelectronics 

ST7LITEU05 ST7LITEU09

11.2 12-BIT AUTORELOAD TIMER (AT)

11.2.1 Introduction

The 12-bit Autoreload Timer can be used for gen-

eral-purpose timing functions. It is based on a free-

running 12-bit upcounter with a PWM output chan-

nel.

11.2.2 Main Features

■ 12-bit upcounter with 12-bit autoreload register

(ATR)

■ Maskable overflow interrupt

■ PWM signal generator

■ Frequency range 2KHz-4MHz (@ 8 MHz fCPU)

– Programmable duty-cycle

– Polarity control

– Maskable Compare interrupt

■ Output Compare Function

Figure 37. Block Diagram

7 ATCSR

OVF INTERRUPT

0 REQUEST

0

0

0 CK1 CK0 OVF OVFIECMPIE

fLTIMER

(1 ms timebase

@ 8MHz)

fCPU

CMPF0

CMP INTERRUPT

REQUEST

fCOUNTER

CNTR

12-BIT UPCOUNTER

Update on OVF Event

12-BIT AUTORELOAD VALUE

ATR

OE0 bit

DCR0H

Preload

DCR0L

Preload

on OVF Event

IF OE0=1

12-BIT DUTY CYCLE VALUE (shadow)

OE0 bit CMPF0 bit

0 COMP-

1

PARE

OP0 bit

fPWM POL-

ARITY

PWM0

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1

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