M38B53M4-059FP datasheet(99/355 Pages) MITSUBISHI

99 / 355 page

38B5 Group User’s Manual

APPLICATION

2-11

2.2 Timer

Fig. 2.2.3 Structure of Timer 2

Fig. 2.2.4 Structure of Timer 6 PWM register

Fig. 2.2.2 Structure of Timer i (i=1, 3, 4, 5, 6)

Timer i

b7 b6 b5 b4 b3 b2 b1 b0

Timer i (i = 1, 3, 4, 5, 6)

(Ti: addresses 2016, 2216, 2316, 2416, 2516)

At reset R W

Functions

• Set timer i count value.

• The value set in this register is written to both

the timer i and the timer i latch at one time.

• When the timer i is read out, the count value

of the timer i is read out.

Timer 2

b7 b6 b5 b4 b3 b2 b1 b0

Timer 2

(T2: address 2116)

At reset R W

Functions

• Set timer 2 count value.

• The value set in this register is written to both

the timer 2 and the timer 2 latch at one time.

• When the timer 2 is read out, the count value

of the timer 2 is read out.

Timer 6 PWM register

b7 b6 b5 b4 b3 b2 b1 b0

Timer 6 PWM register

(T6PWM: address 2716)

Undefined

Functions

At reset R W

Undefined

• In timer 6 PWM1 mode

“L” level width of PWM rectangular waveform is set.

• Duty of PWM rectangular waveform: n/(n + m)

Period: (n + m)

× ts

n = timer 6 set value

m = timer 6 PWM register set value

ts = timer 6 count source period

At n = 0, all PWM output “L”.

At m = 0, all PWM output “H”.

(However, n = 0 has priority.)

• Selection of timer 6 PWM1 mode

Set “1” to the timer 6 operation mode selection bit.

2.2.2 Relevant registers

(1)

8-bit timer

M38B53M4-059FP Datasheet(PDF) 99 Page - Mitsubishi Electric Semiconductor

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