M306V2 Mitsubishi, M306V2 Datasheet - Page 85

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

Rev. 1.0
Table 2.10.1 Specifications of timer mode
Figure 2.10.11 Timer Ai mode register in timer mode (i = 0 to 4)
Count source
Count operation
Divide ratio
Count start condition
Count stop condition
Interrupt request generation timing
TA2
Read from timer
Write to timer
Select function
(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.
OUT
/TA3
Timer Ai mode register
b7
Item
OUT
b6
0 0 0
b5
pin function
b4
b3
b2
0 0
b1
f
• Down count
• When the timer underflows, it reloads the reload register contents before continuing counting
1/(n+1)
Count start flag is set (= 1)
Count start flag is reset (= 0)
When the timer underflows
Programmable I/O port or pulse output
Count value can be read out by reading timer Ai register
• When counting stopped
• When counting in progress
• Pulse output function
b0
1
When a value is written to timer Ai register, it is written to both reload register and counter
When a value is written to timer Ai register, it is written to only reload register
Each time the timer underflows, the TAi
, f
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
Notes 1 : The settings of the corresponding port register and port direction register
Reserved bits
8
Bit symbol
, f
(Transferred to counter at next reload time)
TMOD0
TMOD1
TCK0
TCK1
MR0
MR3
32
Symbol
TAiMR(i=0 to 4)
, f
2 : This bit of TAiMR (i = 0, 1, 4) must always be set to “0.”
c32
n : Set value
are invalid.
Operation mode
select bit
Pulse output function
select bit
(Note 2)
0 (Must always be set to “0” in timer mode)
Count source select bit
0396
Bit name
Address
16
to 039A
Specification
16
When reset
0 0 : Timer mode
0 : Pulse is not output
1 : Pulse is output (Note 1)
Must always be set to “0”
b7 b6
0 0 : f
0 1 : f
1 0 : f
1 1 : f
b1 b0
(TA2
(TA2
00
OUT
16
1
8
32
C32
OUT
OUT
/TA3
/TA3
pin’s polarity is reversed
and ON-SCREEN DISPLAY CONTROLLER
OUT
OUT
Function
MITSUBISHI MICROCOMPUTERS
pin is a normal port pin)
pin is a pulse output pin)
M306V2ME-XXXFP
M306V2EEFP
R
W
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