參數(shù)資料
型號(hào): M30240S8-XXXFP
廠商: Mitsubishi Electric Corporation
英文描述: 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
中文描述: 單片16位CMOS微機(jī)
文件頁(yè)數(shù): 81/142頁(yè)
文件大小: 1637K
代理商: M30240S8-XXXFP
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1-81
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Timer B
Figure 1.72: Timer B-related registers
2.22.1 Timer mode
In this mode, the timer counts an internally generated count source. (See Table 1.22 ) Figure 1.73
shows the Timer Bi mode register in timer mode.
Note: Timer B2 does not generate an interrupt; it is used only as a prescaler.
Table 1.22:
Timer specifications in timer mode
Item
Specification
Count source
f1, f8, f32
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 (see Note)
Symbol
TABSR
Address
0380
16
When reset
00
16
Count start flag
Bit name
Bit symbol
W
R
b7
b6
b5
b4
b3
b2
b1
b0
Timer B2 count start flag
Timer B1 count start flag
Timer B0 count start flag
Timer A4 count start flag
Timer A3 count start flag
Timer A2 count start flag
Timer A1 count start flag
Timer A0 count start flag
0 : Stops counting
1 : Starts counting
TB2S
TB1S
TB0S
TA4S
TA3S
TA2S
TA1S
TA0S
Function
Symbol
TB0
TB1
TB2
TB3
TB4
TB5
Address
0391
16
, 0390
16
0393
16
, 0392
16
0395
16
, 0394
16
0351
16
, 0350
16
0353
16
, 0352
16
0355
16
, 0354
16
When reset
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
b7
b0 b7
b0
(b15)
(b8)
Timer Bi register (Note)
W
R
Timer mode
Counts the timer's period
0000
16
to FFFF
16
Function
Values that can be set
Note: Read and write data in 16-bit units.
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