参数资料
型号: M30240M5-XXXFP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
封装: 0.80 MM PITCH, PLASTIC, QFP-80
文件页数: 109/139页
文件大小: 1453K
代理商: M30240M5-XXXFP
71
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Specifications REV. G
Specifications in this manual are tentative and subject to change
Timer A
Table 1.20:
Timer specification in event counter mode (when processing two-phase pulse signal with
Timers A2, A3, A4.)
Figure 1.65 shows Timer Ai mode register in event counter mode when processing two-phase signal.
Item
Specification
Count Source
Two-phase pulse signals input to TAiIN or TAiOUT pin
Count operation
Up count or down count can be selected by two-phase pulse signal
When the timer overflows or underflows, the reload register content is loaded and the timer starts over
again (Note 1)
Divide ratio
1/ (FFFF16 - n + 1) for up count
1/ (n+1) for down count
n: Set value
Count start condition
Count start flag is set (=1)
Count stop condition
Count start flag is reset (=0)
Interrupt request
generation timing
Timer overflow or underflows
TAiIN pin function
Two-phase pulse input
TAiOUT pin function
Two-phase pulse input
Read from timer
Count value can be read out by reading timer A2, A3, or A4 register
Writer to timer
When counting is stopped and a value is written to timer A2, A3, or A4 register, it is written to both the
reload register and counter
When counting is in progress and a value is written to timer A2, A3, or A4 register, it is written to only
reload register to be transferred to counter at the next reload time.
Select function
Normal processing operation
The timer counts up rising edges or counts down falling edges on the TAiIN pin when input signal on
the TAiOUT pin is “H”
Multiply-by-4 processing operation
If the phase relationship is such that the
TAiIN pin goes “H” when the input signal on the TAiOUT pin
is “H”, the timer counts up rising and falling edges on the
TAiOUT and TAiIN pins. If the phase
relationship is such that the T
AiIN pin goes “L” when the input signal on the TAiOUT pin is “H”, the timer
counts down rising and falling edges on the
TAiOUT and TAiIN pins.
TAiOUT
TAiIN
(i=2,3)
Up
count
Up
count
Up
count
Down
count
Down
count
Down
count
Count up all edges
Count down all edges
Count up all edges
TAiOUT
T
AiIN
(i=3,4)
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