參數(shù)資料
型號： μPD789187
廠商： NEC Corp.
英文描述： 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述： 8位單片機微控制器（8位單片微控制器）
文件頁數(shù)： 44/146頁
文件大小： 630K
代理商： ΜPD789187
Preliminary Product Information
44
μ
PD789186, 789187, 789196, 789197
6.4
8-Bit Timer/Event Counter
6.4.1
8-bit timer/event counter functions
Devices of the
μ
PD789186,
μ
PD789187,
μ
PD789196, and
μ
PD789197 have two timer/event counters (TM80 and
TM81) and one timer counter (TM82). Readers who are seeking a description of TM82 should read the term
“timer/event counter” as “timer counter.”
The 8-bit timer/event counters (TM80, TM81, and TM82) have the following functions.
(1) 8-bit interval timer
This timer causes interrupts to be issued at specified intervals.
(2) External event counter (TM80 and TM81)
This counter is used to count the number of pulses input from an external source.
(3) Square wave output (TM80, TM81, and TM82)
A square wave of any frequency can be output.
(4) PWM output
PWM output with an 8-bit resolution is supported.
Table 6-6. 8-Bit Timer/Event Counter Types and Functions
TM80
TM81
TM82
Type
Interval timer
One channel
One channel
One channel
External event counter
{
{
×
Function
Timer output
{
{
{
Square wave output
{
{
{
PWM output
{
{
{
Interrupt request
{
{
{
6.4.2
8-bit timer/event counter configuration
The 8-bit timer/event counter consists of the following hardware.
Table 6-7. 8-Bit Timer/Event Counter Configuration
Item
Configuration
Timer register
8 bits
×
3 (TM80, TM81, TM82)
Register
Compare registers: 8 bits
×
3 (CR80, CR81, CR82)
Timer output
3 (TO80, TO81, TO82)
Control register
8-bit timer mode control registers 80, 81, 82 (TMC80, TMC81, TMC82)
Port mode registers 2, 3 (PM2, PM3)
相關(guān)PDF資料
PDF描述
μPD789197 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
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