7480 datasheet(84/337 Pages) RENESAS

Part #	7480

Description	8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES

PDF	337 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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84 / 337 page

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1.12 Timer X and Timer Y

HARDWARE

7480 Group and 7481 Group User's Manual

Figure 1.12.8 Operation Example in Timer Mode and Event Count Mode

Count source

(Note 2)

000016

Timer X stop

control bit

Timer X interrupt

request bit

‘0’ is

written

‘0’ is

written

‘1’ is

written

Writing to timer

X (Note 1)

Time

Count start

Count stop

Count start

Notes 1: In this case, timer X write control bit is ‘0’ (writing to timer and timer latch simultaneously).

2: In event count mode,

• when CNTR edge selection bit is ‘0’, CNTR pin input is used as the count source.

• when CNTR edge selection bit is ‘1’, the inverted CNTR pin input is used as the count source.

: Setting value to timer X

: Contents of timer latch is reloaded

: Underflow

: Count period

: Clearing by writing ‘0’ to interrupt request bit or accepting interrupt request

T(s) =

Count source frequency × (Setting value to timer X

7480 Datasheet(PDF) 84 Page - Renesas Technology Corp