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Chapter 1 Overview
Hardware Functions
Timer 4 ( 8-Bit timer for general use or UART baud rate timer )
- Square wave output ( Timer pulse output ), PWM output, Event count
Simple pulse width measurement, Serial interface transfer clock
- Clock source
fosc, fosc/4, fosc/16, fosc/32, fosc/64, fs/2, fs/4, fx, external clock
Timer 5 ( 8-Bit timer for general use or UART baud rate timer )
- Square wave output ( Timer pulse output ), PWM output, Event count,
Remote control carrier output, Simple pulse width measurement,
Serial interface transfer clock
- Clock source
fosc, fosc/4, fosc/16, fosc/32, fosc/64, fs/2, fs/4, fx, external clock
Timer 6 ( 8-Bit free-running timer, Time base timer )
8-Bit free-running timer
- Clock source
fosc, fosc/2
12
, fosc/2
13
, fs, fx, fx/2
12
, fx/2
13
Time base timer
- Interrupt generation cycle
fosc/2
7
, fosc/2
8
, fosc/2
9
, fosc/2
10
, fosc/2
13
, fosc/2
15
,
fx/2
7
, fx/2
8
, fx/2
9
, fx/2
10
, fx/2
13
, fx/2
15
Timer 7 ( 16-Bit timer for general use )
- Clock source
fosc, fosc/2, fosc/4, fosc/16, fs, fs/2, fs/4, fs/16,
1/1, 1/2, 1/4, 1/16 of the external clock
- Hardware organization
Compare register with double buffer 2 sets
Input capture register 1 set
Timer interrupt 2 vectors
- Timer functions
Square wave output ( Timer pulse output ), Event count,
High precision PWM output ( Cycle/Duty variable continuously ),
Timer synchronous output, Input capture function ( Both edges
can be operated )
- Real time output control
PWM output is controlled in real time by the external interrupt 0 (IRQ0).
At the interrupt enable edge of the external interrupt 0 (IRQ0), PWM output
( Timer output ) is controlled in 3 values ; "fixed high", "fixed low",
"Hi-z".