參數(shù)資料
型號: M30240M4-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, MICROCONTROLLER, PQFP80
封裝: 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù): 101/125頁
文件大?。?/td> 753K
代理商: M30240M4-XXXFP
Mitsubishi microcomputers
M16C / 24 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
79
CONFIDENTIAL
Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change
Timer B
(1) Timer mode
In this mode, the timer counts an internally generated count source. (See Table 21 ) Figure 73 shows
the Timer Bi mode register in timer mode.
Note: Timer B2 does not generate an interrupt; it is used only as a prescaler.
Figure 73:
Timer Bi mode register in timer mode
Table 21:
Timer specications in timer mode
Item
Specication
Count source
f1, f8, f32
Count operation
Counts down
When the timer underows, it reloads the reload register contents before continuing
counting
Divide ratio
1/(n+1)
n : Set value
Count start condition
Count start ag is set (= 1)
Count stop condition
Count start ag is reset (= 0)
Interrupt request
generation timing
The timer underows (see Note)
Note 1: Timer B0.
Note 2: Timer B1, timer B2.
Timer Bi mode register
Symbol
Address
When reset
TBiMR(i=0 to 2)
039B16 to 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”
MR2
MR1
MR3
0 0 : f1
0 1 : f8
1 0 : f32
1 1 : invalid
TCK1
TCK0
Count source select bit
0
Invalid in timer mode.
This bit can neither be set nor reset. When read in timer mode,
its content is indeterminate.
0
0 (Fixed to “0” in timer mode ; i = 0)
Nothing is assiigned (i = 1, 2).
This bit can neither be set nor reset. When read, its content is indeterminate.
(Note 1)
(Note 2)
b7 b6
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