7480 datasheet(116/337 Pages) RENESAS

Il numero della parte	7480

Spiegazioni elettronici	8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES

PDF	337 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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7480 Group and 7481 Group User's Manual

1-99

HARDWARE

1.13 Timer 1 and Timer 2

Clock Input

Oscillation Frequency

Count Source

(Count Period)

f(XIN) = 8 MHz

f(XIN) = 4 MHz

f(XIN)/8

µs)

6316

C716

—

f(XIN)/64

µs)

—

1816

—

7C16

F916

—

f(XIN)/128

(16

µs)

—

7C16

F916

f(XIN)/8

µs)

3116

6316

F916

—

f(XIN)/256

(32

µs)

—

7C16

f(XIN)/64

(16

µs)

—

7C16

F916

f(XIN)/128

(32

µs)

—

7C16

100

µs

200

µs

500

µs

1 ms

2 ms

4 ms

Table 1.13.1 Relation between Timer Count Periods and Values Set to Timer 1 and Timer 2

1.13.4 Timer Mode

(1)

Operations in Timer Mode

The operations in the timer mode is explained with Figure 1.13.7.

Count Sources

In the timer mode, timer 1 or timer 2 can select the following count sources with the timer 1 or 2

count source selection bits of the timer 1 or 2 mode register:

• f(XIN)/8

• f(XIN)/64

• f(XIN)/128

• f(XIN)/256

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