FS98O21 datasheet(52/136 Pages) FORTUNE

52 / 136 page

FS98O21

Rev. 1.7

52/136

6..1

Timer module interrupt

Table 6-2 timer module interrupt register table

Address Name

Referenced

Section

Bit 7

Bit 6

Bit 5 Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on Power on Reset

06h

INTF 3/6/7/9/10/11

TMIF

00000000

07h

INTE 3/6/7/9/10/11 GIE

TMIE

00000000

0Eh

TMO

6.1

TMOUT [7:0]

00000000

0Fh

TMC

6.1

TRST

TMEN

INS [2:0]

1uuu0000

Operation:

Operate as Section 5.7 to setup the TMCLK for Timer module input

Setup the INS[2:0] to select timer interrupt source. Please see Table 6-3.

Set the TMIE and GIE register flags to enable the Timer interrupt.

Set the TMEN register flag to enable Timer module 8-bit counter.

Clear the TRST register flag to reset the Timer module 8-bit counter

When time out event happens, TMIF register flag will reset itself, and the program counter will reset to

04h

Table 6-3 timer selection table

INS[2:0]

interrupt source

Time at TMCLK=1024Hz (ECK/32)

000

TMOUT[0]

1/128 sec.

001

TMOUT[1]

1/64 sec.

010

TMOUT[2]

1/32 sec.

011

TMOUT[3]

1/16 sec.

100

TMOUT[4]

1/8 sec.

101

TMOUT[5]

1/4 sec.

110

TMOUT[6]

1/2 sec.

111

TMOUT[7]

1 sec.

FS98O21 Datasheet(PDF) 52 Page - Fortune Semiconductor Corp.

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