M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 22

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Specifications in this manual are tentative and subject to change
Reset
2.5 Reset
Figure 1.9:
Figure 1.10: Reset sequence
There are two types of resets: hardware and software. In both cases, operation is the same after the
reset. (See “Software Reset” for further details regarding software resets.) This section explains on
hardware resets.
When the supply voltage is within the range where operation is guaranteed, a reset is effected by holding
the reset pin level “L” (0.2VCC max.) for at least 20 f(X
returned to the “H” level while main clock is stable, the reset status is cancelled and program execution
resumes from the address in the reset vector table.
Figure 1.9 shows an example of a reset circuit. Figure 1.10 shows the reset sequence.
.
Internal clock F
X
RESET
Address
IN
Reset circuit
Example when V
RESET
At least 20 cycles are needed
V
CC
CC
Internal clock F
24 cycles
= 5V
.
RESET
V
5V
0V
5V
0V
CC
FFFFC
1-22
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
FFFFE
16
IN
Content of reset vector
) cycles. When the reset pin level is then
0.8V
4.0V
Mitsubishi microcomputers
M30240 Group