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M34250M2 Datasheet(Fiches technique) 20 Page - Mitsubishi Electric Semiconductor

Numéro de pièce M34250M2
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER    
Télécharger  58 Pages
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Fabricant  MITSUBISHI [Mitsubishi Electric Semiconductor]
Site Internet  http://www.mitsubishichips.com
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MITSUBISHI
ELECTRIC
20
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Fig. 18 Auto-reload function
FF16
n
0016
n : Counter initial value
Count starts
Reload
Reload
1st underflow
2nd underflow
n+1 count
n+1 count
Time
An interrupt occurs or
a skip instruction is executed.
Timer 1 interrupt
request flag
TIMERS
The 4250 Group has the programmable timer.
• Programmable timer
The programmable timer has a reload register and enables
the frequency dividing ratio to be set. It is decremented from a
setting value n. When it underflows (count to n + 1), a timer
interrupt request flag is set to “1,” new data is loaded from the
reload register, and count continues (auto-reload function).




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