TMP93CS32F datasheet(101/180 Pages) TOSHIBA

101 / 180 page

TMP93CS32

2004-02-10

93CS32-99

(1) 16-bit timer mode

Generating interrupts at fixed intervals

In this example, the interval time is set in the timer register TREG5 to generate the

interrupt INTTR5.

TRUN

← − X − 0 − − − −

Stop timer 4.

INTET54

← 1 1 0 0 1 0 0 0

Enable INTTR5 and sets interrupt level 4. Disable

INTTR4.

T4FFCR

← X X 0 0 0 0 1 1

Disable trigger.

T4MOD

← 0 0 1 0 0 1 * *

(* *

= 01, 10,11)

Select internal clock for input and disable the capture

function.

TREG5

← * * * * * * * *

Set the interval time (16 bits).

TRUN

← 1 X − 1 − − − −

Start timer 4.

X: Don’t care,

−: No change

(2) 16-bit event counter mode

In 16-bit timer mode as described in above, the timer can be used as an event counter by

selecting the external clock (TI4 pin input) as the input clock. To read the value of the

counter, first perform “software capture” once and read the captured value.

The counter counts at the rise edge of TI4 pin input.

TI4 pin can also be used as P42/INT4.

Since both timers operate in exactly the same way, timer 4 is used for the purposes of

explanation.

TRUN

← − X − 0 − − − −

Stop timer 4.

P4CR

← − − − − − 0 −−

Set P42 to input mode.

INTET54

← 1 1 0 0 1 0 0 0

Enable INTTR5 and sets interrupt level 4, while disables

INTTR4.

T4FFCR

← X X 0 0 0 0 1 1

Disable trigger.

T4MOD

← 0 0 1 0 0 1 0 0

Select TI4 as the input clock.

TREG5

← * * * * * * * *

Set the number of counts (16 bits).

TRUN

← 1 X − 1 − − − −

Start timer 4.

X: Don’t care,

−: No change

When used as an event counter, set the prescaler in RUN mode.

(TRUN<PRRUN>

= “1”)

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