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7721 Datasheet(PDF) 132 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 132 Page - Renesas Technology Corp

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TIMER A
7721 Group User’s Manual
8–13
8.3 Timer mode
8.3.2 Count source
In the timer mode, the count source select bits (bits 6 and 7 at addresses 5616 to 5A16) select the count
source. Table 8.3.2 lists the count source frequency.
Table 8.3.2 Count source frequency
b6
0
1
0
1
Count source
select bits
b7
0
0
1
1
Count
source
f2
f16
f64
f512
f(XIN) = 8 MHz
4 MHz
500 kHz
125 kHz
15625 Hz
Count source frequency
f(XIN) = 25 MHz
12.5 MHz
1.5625 MHz
390.625 kHz
48.8281 kHz
f(XIN) = 16 MHz
8 MHz
1 MHz
250 kHz
31250 Hz



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