M34282E2GP MITSUBISHI [Mitsubishi Electric Semiconductor], M34282E2GP Datasheet - Page 15

• Manufacturer Part Number: M34282E2GP
• Description: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Fig. 16 Timer 2 count start/stop timing
Timer 2 underflow signal
Timer 2 underflow signal
(Count source selected)
(Count source selected)
• To expand “H” interval of carrier wave is invalid (V2
• Timer 2 carrier wave generation function is valid (V2
• Count source X
• “L” interval (03
• “H” interval (02
In this case, the following is set;
Timer 2 count start timing
Timer 2 count value
Timer 2 count value
(Reload register)
(Reload register)
Timer 2 count stop timing
Instruction clock
Instruction clock
Machine cycle
Machine cycle
Notes 1: When the carrier wave generation function is vaild (V2
Register V2
Register V2
CARRYD
CARRYD
=f(X
=f(X
X
X
2: When the timer 2 is stopped during “H” output of carrier wave while the carrier
IN
IN
IN
IN
X
X
)/8
)/8
16
when timer 2 underflows to stop timer 2. When the timer 2 count stop occurs
at the same timing with the timer 2 underflows, hazard may occur in the carrier
wave output waveform.
IN
/2
/2
16
IN
0
0
wave generation function is valid, it is stopped after the “H” interval set by
reload register R2H is output.
IN
Mi
Mi
) of carrier wave is set to reload register R2L
) of carrier wave is set to reload register R2H
/2 selected (V2
00
16
03
(R2L)
16
02
16
1
01
=“1”),
16
00
TV2A instruction execution cycle (V2
TV2A instruction execution cycle (V2
16
02
(R2H)
16
(R2L)
03
01
16
16
MITSUBISHI
ELECTRIC
Mi + 1
Mi + 1
00
3
2
16
= “0”),
=“1”),
03
(R2L)
16
02
16
Timer 2 count start timing
Timer 2 count stop timing
01
16
00
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
2
16
=“1”), avoid a timing
(R2H)
02
(Note 1)
16
0
0
02
)
) 0
16
MITSUBISHI MICROCOMPUTERS
1
01
16
00
16
(R2H)
02
16
01
16
4282 Group
Mi + 2
Mi + 2
00
16
03
(R2L)
16
02
16
15