XE8802MI000 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

XE8802MI000

Sensing Machine Data Acquisition SoC with 16+10 bit ZoomingADC™ Embedded RISC controller and LCD driver

Semtech Corporation 

XE8802 Sensing Machine Data Acquisition MCU

with ZoomingADC™ and LCD driver

20.1 Features

- 4 x 8-bits timer/counter modules or 2 x 16-bits timers/counter modules

- Each with 4 possible clock sources

- Up/down counter modes

- Interrupt and event generation

- Capture function (internal or external source)

- Rising, falling or both edge of capture signal (except for xtal 32 kHz, only rising edge)

- PA[3:0] can be used as clock inputs (debounced or direct, frequency divided by 2 or not)

- 2 x 8 bits PWM or 2 x 16 bits PWM

- PWM resolution of 8, 10, 12, 14 or 16 bits

- Complex mode combinations are possible

20.2 Overview

Counter A and Counter B are 8-bits counters and can be combined to form a 16-bit counter. Counter C and

Counter D exhibit the same feature.

The counters can also be used to generate two PWM outputs on PB[0] and PB[1]. In PWM mode one can generate

PWM functions with 8, 10, 12, 14 or 16 bits wide counters.

The counters A and B can be captured by events on an internal or an external signal. The capture can be

performed on both 8-bit counters running individually on two different clock sources or on both counters chained to

form a 16-bit counter. In any case, the same capture signal is used for both counters.

When the counters A and B are not chained, they can be used in several configurations: A and B as counters, A

and B as captured counters, A as PWM and B as counter, A as PWM and B as captured counter.

When the counters C and D are not chained, they can be used either both as counters or counter C as PWM and

counter D as counter.

20.3 Register map

bit

RegCntA

7-0

CounterA

7-0

CounterA

register name

RegCntA

RegCntB

RegCntC

RegCntD

RegCntCtrlCk

RegCntConfig1

RegCntConfig2

RegCntOn

Table 20-1. Counter registers

rw

reset

R

00000000 nresetglobal

W

00000000 nresetglobal

Table 20-2. RegCntA

function

8-bits counter value

8-bits comparison value

© Semtech 2006

20-2

www.semtech.com

Share Link: