M38B53M4-059FP datasheet(101/355 Pages) MITSUBISHI

101 / 355 page

38B5 Group User’s Manual

APPLICATION

2-13

2.2 Timer

Fig. 2.2.7 Structure of Timer 56 mode register

(2)

16-bit timer

Timer 56 mode register

b7 b6 b5 b4 b3 b2 b1 b0

Timer 56 mode register

(T56M: address 2A16)

0: Count operation

1: Count stop

Name

Functions

At reset R W

0: Count operation

1: Count stop

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

1: Timer 4 underflow

0: Timer mode

1: PWM mode

0: I/O port

1: Timer 6 output

Timer 5 count stop

bit

Timer 6 count stop

bit

Timer 6 count

source selection

bits

Timer 6 (PWM)

output selection bit

(P44)

Timer 5 count

source selection bit

Timer 6 operation

mode selection bit

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

b5 b4

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

0 1: Timer 5 underflow

1 0: Timer 4 underflow

1 1: Not available

Fig. 2.2.8 Structure of Timer X (low-order, high-order)

Timer X (low-order, high-order)

b7 b6 b5 b4 b3 b2 b1 b0

Timer X (low-order, high-order)

(TXL, TXH: addresses 2C16, 2D16)

Functions

At reset R W

• Set timer X count value.

• When the timer X write control bit of the timer

X mode register 1 is “0”, the value is written to

timer X and the latch at one time.

When the timer X write control bit of the timer

X mode register 1 is “1”, the value is written

only to the latch.

• The timer X count value is read out by reading

this register.

Notes 1: When reading and writing, perform them to both the high-

order and low-order bytes.

2: Read both registers in order of TXH and TXL following.

3: Write both registers in order of TXL and TXH following.

4: Do not read both registers during a write, and do not write to

both registers during a read.

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