M30622 Mitsubishi, M30622 Datasheet - Page 44

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

Clock Generating Circuit
Clock Output
Stop Mode
Table 1.13.2. Port status during stop mode
Note 1:
__________
In single-chip mode, the clock output function select bits (bits 0 and 1 at address 0006
fc to be output from the P5
0006
Writing “1” to the all-clock stop control bit (bit 0 at address 0007
puter enters stop mode. In stop mode, the content of the internal RAM is retained provided that V
mains above 2V.
Because the oscillation , BCLK, f
functions such as the A-D converter and watchdog timer do not function. However, timer A and timer B
operate provided that the event counter mode is set to an external pulse, and UARTi(i = 0 to 2) functions
provided an external clock is selected. Table 1.13.2 shows the status of the ports in stop mode.
Stop mode is cancelled by a hardware reset or interrupt. If an interrupt is to be used to cancel stop mode,
that interrupt must first have been enabled.
When shifting to stop mode, the main clock division select bit 0 (bit 6 at 0006
Address bus, data bus, CS0 to CS3
RD, WR, BHE, WRL, WRH
HLDA, BCLK “H”
ALE
Port
CLK
_____
OUT
______ ________ ________
16
Tentative Specifications REV.A
In M30623(80-pin package), CS0 to CS3 have no corresponding external pin, but are internally the
above conditions.
) is set to “1”, the output of f
S
pecifications in this manual are tentative and subject to change.
“H”
When fc selected
When f
Pin
_________
8
, f
_______
32
7
/CLK
selected
_______
OUT
1
8
to f
______
and f
pin. When the WAIT peripheral function clock stop bit (bit 2 at address
32
, f
Retains status before stop mode
“H”
Retains status before stop mode
Valid only in single-chip mode
Valid only in single-chip mode
32
1SIO2
Memory expansion mode
______
stops when a WAIT instruction is executed.
Microprocessor mode
to f
44
32SIO2
, f
C
, f
C32
16
, and f
) stops all oscillation and the microcom-
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
AD
Retains status before stop mode
“H”
Retains status before stop mode
stops in stop mode, peripheral
16
) is set to “1”.
Single-chip mode
Mitsubishi microcomputers
16
M16C / 62T Group
) enable f
8
, f
CC
32
, or
re-