7477 datasheet(79/354 Pages) RENESAS

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7477 Datasheet(PDF) 79 Page - Renesas Technology Corp

Part #	7477

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

PDF	354 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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79 / 354 page

7470/7471/7477/7478 GROUP USER’S MANUAL

1-62

HARDWARE

1.12 Timers

The 7470/7471/7477/7478 group has four 8-bit timers (Timer 1, Timer 2, Timer 3 and Timer 4) with an 8-

bit timer latch. The division ratio of the timer is 1/(n+1) when the contents of the timer latch are n (n:0

to 255).

For the timer, the following modes can be selected by software setting.

• Timer mode

• Event counter mode

• Pulse output mode

• External pulse width measurement mode

• PWM mode

Table 1.12.1 shows the modes of each timer and Figure 1.12.1 shows a timer block diagram.

Table 1.12.1 Modes of each timer

Mode

Timer

Timer 1

Timer 2

Timer 3

Timer 4

Timer mode

Event

counter mode

Pulse

output mode

External pulse width

measurement mode

PWM mode

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