38K2 datasheet(181/358 Pages) RENESAS

181 / 358 page

2.3 Timer

Rev.2.00

Oct 15, 2006

page 32 of 112

38K2 Group

REJ09B0338-0200

APPLICATION

Fig. 2.3.15 Related registers setting

Fig. 2.3.16 Control procedure

PREX

Timer X mode register (address 2316)

Timer X operating mode: Pulse output mode

Timer X count: Stop

Clear to “0” when starting count.

Prescaler X (address 2416)

Timer X (address 2516)

Set “division ratio – 1”.

CNTR0 active edge selection: Output starting at “H” level

RESET

P5D

ICON1

PREX

XXXX

10012

92 – 1

1 – 1

Output unit

TM (address 2316), bit3

(address 0A16), bit1

(address 0B16)

(address 3E16), bit4

(address 2316)

(address 2516)

(address 2416)

TM (address 2316), bit3

TX (address 2516)

92 – 1

Initialization

q x: This bit is not used here. Set it to “0” or “1” arbitrarily.

XXX

xXX1X2

Main processing

Piezoelectric buzzer request ?

Yes

Piezoelectric buzzer output start

Stop piezoelectric buzzer output

•Timer X interrupt disabled

•CNTR0 output stop; Piezoelectric buzzer output stop

•“Division ratio – 1” set to Timer X and Prescaler X

•Processing piezoelectric buzzer request, generated during

main processing, in output unit

38K2 Datasheet(PDF) 181 Page - Renesas Technology Corp

38K2 Datasheet(HTML) 181 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