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M306V5ME-XXXSP Datasheet(PDF) 74 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) 74 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
74
Rev. 1.0
Notes 1 : The settings of the corresponding port register and port direction register
are invalid.
2 : This bit of TAiMR (i = 0, 1, 4) must always be set to “0.”
Timer Ai mode register
Symbol
Address
When reset
TAiMR(i=0 to 4)
039616 to 039A16
0016
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
Pulse output function
select bit
(Note 2)
0 : Pulse is not output
(TA2OUT/TA3OUT pin is a normal port pin)
1 : Pulse is output (Note 1)
(TA2OUT/TA3OUT pin is a pulse output pin)
Must always be set to “0”
Reserved bits
MR3
0 (Must always be set to “0” in timer mode)
0 0 : f1
0 1 : f8
1 0 : f32
1 1 : Do not set
b7 b6
TCK1
TCK0
Count source select bit
00
0 00
Figure 2.10.11 Timer Ai mode register in timer mode (i = 0 to 4)
(1) Timer mode
In this mode, the timer counts an internally generated count source. (See Table 2.10.1.) Figure 2.10.11
shows the timer Ai mode register in timer mode.
Table 2.10.1 Specifications of timer mode
Item
Specification
Count source
f1, f8, f32
Count operation
• Down count
• 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
When the timer underflows
TA2OUT/TA3OUT pin function
Programmable I/O port or pulse output
Read from timer
Count value can be read out by reading timer Ai register
Write to timer
• When counting stopped
When a value is written to timer Ai register, it is written to both reload register and counter
• When counting in progress
When a value is written to timer Ai register, it is written to only reload register
(Transferred to counter at next reload time)
Select function
• Pulse output function
Each time the timer underflows, the TAiOUT pin’s polarity is reversed


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