參數(shù)資料
型號: M30201MXT-XXXFP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機
文件頁數(shù): 14/159頁
文件大?。?/td> 1496K
代理商: M30201MXT-XXXFP
Unde
Reset
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
14
Figure 1.12. Reset sequence
Reset
There are two kinds of resets; hardware and software. In both cases, operation is the same after the reset.
(See “Software Reset” for details of software resets.) This section explains on hardware resets.
When the supply voltage is in the range where operation is guaranteed, a reset is effected by holding the
reset pin level “L” (0.2V
CC
max.) for at least 20 cycles. When the reset pin level is then 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 1.11 shows the example reset circuit. Figure 1.12 shows the reset sequence.
Figure 1.11. Example reset circuit
RESET
V
CC
0.8V
RESET
V
CC
0V
0V
5V
5V
4.0V
Example when V
CC
= 5V
.
BCLK
(Internal clock)
Address
(Internal address
signal)
BCLK 24cycles
FFFFC
16
FFFFE
16
Content of reset vector
X
IN
RESET
More than 20 cycles are needed
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