M30622 Mitsubishi, M30622 Datasheet - Page 45

• Manufacturer Part Number: M30622
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

Wait Mode
Wait Mode
Table 1.13.3. Port status during wait mode
Note 1:
__________
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 1.13.3 shows the status of the ports in
wait mode.
Wait mode is cancelled by a hardware reset or interrupt. If an interrupt is used to cancel wait mode, the
microcomputer restarts using as BCLK, the clock that had been selected when the WAIT instruction was
executed.
Address bus, data bus, CS0 to CS3
RD, WR, BHE, WRL, WRH
HLDA,BCLK
ALE
Port
CLK
_____
OUT
______ ________ ________ _________
Tentative Specifications REV.A
In M30623(80-pin package), CS0 to CS3 have no corresponding external pin, but are internally the
above conditions.
S
pecifications in this manual are tentative and subject to change.
When f
When f
Pin
C
8
, f
_______
selected
32
selected
_______
______
Retains status before wait mode
“H”
“H”
“H”
Retains status before wait mode Retains status before wait mode
Valid only in single-chip mode
Valid only in single-chip mode
Memory expansion mode
______
Microprocessor mode
45
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Does not stop
Does not stop when the WAIT
peripheral function clock stop
bit is “0”.
When the WAIT peripheral
function clock stop bit is “1”, the
status immediately prior to en-
tering wait mode is main-
tained.
Single-chip mode
Mitsubishi microcomputers
M16C / 62T Group