m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 159
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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the timer mode. Figure 8.3.1 shows the structures of the timer Bi register and timer Bi mode register in the
timer mode.
Count source f
Count operation
Division ratio
Count start condition
Count stop condition
Interrupt request occurrence timing
TBi
Read from timer Bi register
Write to timer Bi register
TIMER B
8.3 Timer mode
8.3 Timer mode
In this mode, the timer counts an internally generated count source. Table 8.3.1 lists the specifications of
Table 8.3.1 Specifications of timer mode
8-8
IN
pin’s function
i
Item
f
•Countdown
•When a counter underflow occurs, reload register’s contents are re-
When the count start bit is set to “1.”
When the count start bit is cleared to “0.”
When a counter underflow occurs.
Programmable I/O port pin
Counter value can be read out.
2
(n + 1)
loaded, and counting continues.
, f
7905 Group User’s Manual Rev.1.0
While counting is stopped
When a value is written to the timer Bi register, it is written to both
of the reload register and counter.
While counting is in progress
When a value is written to the timer Bi register, it is written only to the
reload register. (Transferred to the counter at the next reload timing.)
16
1
, f
64
, or f
n: Timer Bi register’s set value
512
Specifications
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