7733 datasheet(147/940 Pages) RENESAS

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TIMER A

7733 Group User’s Manual

6–36

6.5.2 Count source

In the one-shot pulse mode, by the count source selection bits (bits 7 and 6 at addresses 5616 to 5A16),

a count source can be selected. Table 6.5.2 lists the relationship between the count source selection bits

and count source.

Table 6.5.2 Relationship between count source selection bits and count source

6.5 One-shot pulse mode

Count

source

f16

f64

f512

Frequency of count source

When system clock = 25 MHz

When system clock = 16 MHz

When system clock = 8 MHz

Clocks f2, f16, f64, f512

, and system clock: Refer to chapter “14. CLOCK GENERATING CIRCUIT.”

Note: The above is applied when the system clock selection bit (bit 3 at address 6C16) = “0” and the main

clock division selection bit (bit 0 at address 6F16) = “0.” (For details, refer to chapter “14. CLOCK

GENERATING CIRCUIT.”)

12.5 MHz

1.5625 MHz

390.625 kHz

48.8281 kHz

8 MHz

1 MHz

250 kHz

31.25 kHz

4 MHz

500 kHz

125 kHz

15.625 kHz

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