M38B53M4-059FP datasheet(293/355 Pages) MITSUBISHI

293 / 355 page

38B5 Group User’s Manual

3-45

APPENDIX

3.5 Control registers

Fig. 3.5.22 Structure of timer 6 PWM register

Fig. 3.5.23 Structure of timer 12 mode register

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.

Timer 12 mode register

b7 b6 b5 b4 b3 b2 b1 b0

Timer 12 mode register

(T12M: address 2816)

0: Count operation

1: Count stop

Name

Functions

At reset R W

0: Count operation

1: Count stop

0 0: f(XIN)/8 or f(XCIN)/16

0 1: f(XCIN)

1 0: f(XIN)/16 or f(XCIN)/32

1 1: f(XIN)/64 or f(XCIN)/128

0: I/O port

1: Timer 1 output

Timer 1 count stop

bit

Timer 2 count stop

bit

Timer 2 count

source selection

bits

Timer 1 output

selection bit (P45)

Timer 1 count

source selection

bits

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

b3 b2

b5 b4

0 0: Timer 1 underflow

0 1: f(XCIN)

1 0: External count input

CNTR0

1 1: Not available

M38B53M4-059FP Datasheet(PDF) 293 Page - Mitsubishi Electric Semiconductor

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