7721 Datasheet, PDF (178/577 Pages) List of Unclassifed Manufacturers – H Bridge Power Module

TIMER B
9.3 Timer mode
9.3.2 Count source
In the timer mode, the count source select bits (bits 6 and 7 at addresses 5B16 to 5D16) select the count
source. Table 9.3.2 lists the count source frequency.
Table 9.3.2 Count source frequency
Count source
select bits
b7
b6
0
0
0
1
1
0
1
1
Count
source
f2
f16
f64
f512
Count source frequency
f(XIN) = 8 MHz
4 MHz
500 kHz
125 kHz
15625 Hz
f(XIN) = 16 MHz
8 MHz
1 MHz
250 kHz
31250 Hz
f(XIN) = 25 MHz
12.5 MHz
1.5625 MHz
390.625 kHz
48.8281 kHz
7721 Group User’s Manual
9–11