M38B53M4-059FP datasheet(102/355 Pages) MITSUBISHI

102 / 355 page

2-14

38B5 Group User’s Manual

APPLICATION

2.2 Timer

Fig. 2.2.9 Structure of Timer X mode register 1

Timer X mode register 1

b7 b6 b5 b4 b3 b2 b1 b0

Timer X mode register 1

(TXM1: address 2E16)

Name

Functions

At reset R W

Timer X write

control bit

0 : Write value in latch and

counter

1 : Write value in latch only

Timer X stop

control bit

0 : Count operating

1 : Count stop

CNTR2 active edge

switch bit

0 : •Count at rising edge in

event counter mode

•Start from “H” output in

pulse output mode

•Measure “H” pulse

width in pulse width

measurement mode

1 : •Count at falling edge in

event counter mode

•Start from “L” output in

pulse output mode

•Measure “L” pulse

width in pulse width

measurement mode

Timer X operating

mode bits

b5 b4

0 0 : Timer mode

0 1 : Pulse output mode

1 0 : Event counter mode

1 1 : Pulse width

measurement mode

Timer X count

source selection bits

0 0: f(XIN)/2 or f(XCIN)/4

0 1: f(XIN)/8 or f(XCIN)/16

1 0: f(XIN)/64 or f(XCIN)/128

1 1: Not available

b2 b1

Nothing is arranged for this bit. This is write

disabled bit. When this bit is read out, the

contents are “0”.

M38B53M4-059FP Datasheet(PDF) 102 Page - Mitsubishi Electric Semiconductor

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