參數(shù)資料
型號: M30302MA-XXXGP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 169/178頁
文件大?。?/td> 2734K
代理商: M30302MA-XXXGP
Timer B
89
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Item
Specification
Count source
f1, f8, f32, fC32
Count operation
Counts down
When the timer underflows, it reloads the reload register contents before
continuing counting
Divide ratio
1/(n+1)
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
The timer underflows
TBiIN pin function
Programmable I/O port
Read from timer
Count value is read out by reading timer Bi register
Write to timer
When counting stopped
When a value is written to timer Bi register, it is written to both reload register and counter
When counting in progress
When a value is written to timer Bi register, it is written to only reload register
(Transferred to counter at next reload time)
(1) Timer mode
In this mode, the timer counts an internally generated count source. (See Table 1.14.6.) Figure 1.14.17
shows the timer Bi mode register in timer mode.
Table 1.14.6. Timer specifications in timer mode
Timer Bi mode register
Symbol
Address
When reset
TBiMR(i=1, 2)
039C16, 039D16
00XX00002
Bit name
Function
Bit symbol
W
R
b7
b6
b5
b4
b3
b2
b1
b0
Operation mode select bit
0 0 : Timer mode
b1 b0
TMOD1
TMOD0
MR0
Invalid in timer mode
Can be “0” or “1”
MR1
MR3
0 0 : f1
0 1 : f8
1 0 : f32
1 1 : fC32
TCK1
TCK0
Count source select bit
0
Invalid in timer mode.
In an attempt to write to this bit, write “0”. The value, if read in
timer mode, turns out to be indeterminate.
0
Nothing is assiigned.
In an attempt to write to this bit, write “0”. The value, if read,
turns out to be indeterminate.
b7 b6
Figure 1.14.17. Timer Bi mode register in timer mode
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