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M306V5ME-XXXSP Datasheet(PDF) 82 Page - Mitsubishi Electric Semiconductor

Part No. M306V5ME-XXXSP
Description  SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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Maker  MITSUBISHI [Mitsubishi Electric Semiconductor]
Homepage  http://www.mitsubishichips.com
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M306V5ME-XXXSP Datasheet(HTML) 82 Page - Mitsubishi Electric Semiconductor

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M306V5ME-XXXSP
M306V5EESP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
82
Rev. 1.0
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
TB0IN 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 2.10.5) Figure 2.10.21
shows the timer Bi mode register in timer mode.
Table 2.10.5 Timer specifications in timer mode
Figure 2.10.21 Timer Bi mode register in timer mode (i = 0 to 2)
Notes 1: Timer B0.
2: Timer B1, timer B2.
Timer Bi mode register
SymbolAddressWhen reset
TBiMR(i=0 to 2)039B16 to 039D16
00?X00002
Bit nameFunction
Bit symbol
W
R
b7b6b5b4b3b2b1b0
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 : Do not set
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
0 (Fixed to “0” in timer mode ; i = 0)
Nothing is assigned (i = 1, 2).
In an attempt to write to this bit, write “0.” The value, if read, turns out to
be indeterminate.
(Note 1)
(Note 2)
b7 b6


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