M30620FCAFP datasheet(524/615 Pages) RENESAS

524 / 615 page

Timer A Applications

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-207

Figure 3.5.1. Set-up procedure of solution for a shortage of external interrupt pins

Initialization of timer A0

Selection of event counter mode

Pulse output function select bit

0 : Pulse is not output (TA0out pin is a normal port pin)

Count polarity select bit

0 : Counts external signal's falling edge

Up/down switching cause select bit

0 : Up/down flag's content

0 (Must always be “0” in event counter mode)

Count operation type select bit

0 : Reload type

0 (Must always be “0” in event counter mode)

Timer A0 mode register

TA0MR [Address 039616 ]

Up/down flag [Address 038416]

UDF

Timer A0 up/down flag

0 : Down count

Setting interrupt priority levels in timer A0

Timer A0 interrupt control register [Address 005516]

TA0IC

Interrupt control level (set a value 1 to 7)

Setting interrupt enable flag (I flag)

Timer A0 count start flag

1 : Starts counting

Count start flag [Address 038016]

TABSR

Initialization of port P7 direction register

Port P71 direction register

0 : Input mode

Port P7 direction register [Address 03EF16]

PD7

Timer A0 register

TA0 [Address 038716, 038616]

b15

0016

One shot start flag [Address 038216]

ONSF

Timer A0 event/trigger select flag

b7 b6

0 0 : Input on TA0IN is selected

M30620FCAFP Datasheet(PDF) 524 Page - Renesas Technology Corp

M30620FCAFP Datasheet(HTML) 524 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL