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M30623M4A Datasheet(Fiches technique) 79 Page - Mitsubishi Electric Semiconductor

Numéro de pièce M30623M4A
Description  SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Télécharger  237 Pages
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Fabricant  MITSUBISHI [Mitsubishi Electric Semiconductor]
Site Internet  http://www.mitsubishichips.com
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 79 page
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Mitsubishi microcomputers
M16C / 62A Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Timer A
79
1 / fi X (2
– 1)
16
Count source
TAiIN pin
input signal
PWM pulse output
from TAiOUT pin
Condition : Reload register = 000316, when external trigger
(rising edge of TAiIN pin input signal) is selected
Trigger is not generated by this signal
“H”
“H”
“L”
“L”
Timer Ai interrupt
request bit
“1”
“0”
Cleared to “0” when interrupt request is accepted, or cleared by software
fi : Frequency of count source
(f1, f8, f32, fC32)
Note 1: n = 000016 to FFFE16.
Note 2: Timer A1 and A2 do not have I/O port (TAiIN and TAiOUT).
1 / fi X n
Count source (Note1)
TAiIN pin input signal
Underflow signal of
8-bit prescaler (Note2)
PWM pulse output
from TAiOUT pin
“H”
“H”
“H”
“L”
“L”
“L”
“1”
“0”
Timer Ai interrupt
request bit
Cleared to “0” when interrupt request is accepted, or cleaerd by software
fi : Frequency of count source
(f1, f8, f32, fC32)
Note 1: The 8-bit prescaler counts the count source.
Note 2: The 8-bit pulse width modulator counts the 8-bit prescaler's underflow signal.
Note 3: m = 0016 to FF16; n = 0016 to FE16.
Note 4: Timer A1 and A2 do not have I/O port (TAiIN and TAiOUT).
Condition : Reload register high-order 8 bits = 0216
Reload register low-order 8 bits = 0216
External trigger (falling edge of TAiIN pin input signal) is selected
1 / fi X (m + 1) X (2 – 1)
8
1 / fi X (m + 1) X n
1 / fi X (m + 1)
Figure 1.13.12. Example of how a 16-bit pulse width modulator operates
Figure 1.13.13. Example of how an 8-bit pulse width modulator operates




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