參數(shù)資料
型號(hào): M30201M4T
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機(jī)
文件頁數(shù): 54/159頁
文件大?。?/td> 2319K
代理商: M30201M4T
Unde
Timer A
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
54
Item
Specification
Count source
Count operation
Two-phase pulse signals input to TA0
IN
or TA0
OUT
pin
Up count or down count can be selected by two-phase pulse signal
When the timer overflows or underflows, the reload register content is
reloaded and the timer starts over again (Note)
1/ (FFFF
16
-
n + 1) for up count
1/ (n + 1) for down count
Count start flag is set (= 1)
Count start flag is reset (= 0)
Interrupt request generation timing
Timer overflows or underflows
TA0
IN
pin function
Two-phase pulse input
TA0
OUT
pin function
Two-phase pulse input
Read from timer
Count value can be read out by reading timer A0 register
Write to timer
When counting stopped
When a value is written to timer A0 register, it is written to both reload regis-
ter and counter
When counting in progress
When a value is written to timer A0 register, it is written to only reload regis-
ter. (Transferred to counter at next reload time.)
Select function
Normal processing operation
The timer counts up rising edges or counts down falling edges on the TA0
IN
pin when input signal on the TA0
OUT
pin is “H”
Divide ratio
n : Set value
Count start condition
Count stop condition
Multiply-by-4 processing operation
If the phase relationship is such that the TA0
IN
pin goes “H” when the input
signal on the TA0
OUT
pin is “H”, the timer counts up rising and falling edges
on the TA0
OUT
and TA0
IN
pins. If the phase relationship is such that the
TA0
IN
pin goes “L” when the input signal on the TA0
OUT
pin is “H”, the timer
counts down rising and falling edges on the TA0
OUT
and TA0
IN
pins.
Note: This does not apply when the free-run function is selected.
Table 1.15. Timer specifications in event counter mode (when processing two-phase pulse signal)
TA0
OUT
Up
count
Up
count
Up
count
Down
count
Down
count
Down
count
TA0
IN
TA0
OUT
TA0
IN
Count up all edges
Count up all edges
Count down all edges
Count down all edges
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