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M30623M4A Datasheet(Fiches technique) 31 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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Mitsubishi microcomputers
M16C / 62A Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Wait Mode
31
Table 1.9.3. Port status during wait mode
Pin
Single-chip mode
Port
Retains status before wait mode
CLKOUT
When fC selected
Does not stop
When f8, f32 selected Does not stop when the WAIT peripheral function clock stop bit
is “0”.
When the WAIT peripheral function clock stop bit is “1”, the sta-
tus immediately prior to entering wait mode is retained.
Wait Mode
When a WAIT instruction is executed, the BCLK stops and the microcomputer enters the wait mode. In this
mode, oscillation continues but the BCLK and watchdog timer stop. Writing “1” to the WAIT peripheral
function clock stop bit and executing a WAIT instruction stops the clock being supplied to the internal
peripheral functions, allowing power dissipation to be reduced. Table 1.9.3 shows the status of the ports in
wait mode.
Wait mode is cancelled by a hardware reset or an interrupt. If an interrupt is used to cancel wait mode, the
microcomputer restarts from the interrupt routine using as BCLK, the clock that had been selected when the
WAIT instruction was executed.




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