參數(shù)資料
型號(hào)： M30621MCM-5P4GP
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(jī)
文件頁(yè)數(shù)： 17/24頁(yè)
文件大?。?/td> 594K
代理商： M30621MCM-5P4GP
Usage precaution
Mitsubishi microcomputers
M16C / 62M (80-pin version) Group
(Low voltage version)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
17
Stop Mode and Wait Mode
A-D Converter
(1) Write to each bit (except bit 6) of A-D control register 0, to each bit of A-D control register 1, and to bit
0 of A-D control register 2 when A-D conversion is stopped (before a trigger occurs).
In particular, when the Vref connection bit is changed from “0” to “1”, start A-D conversion after an
elapse of 1
μ
s or longer.
(2) When changing A-D operation mode, select analog input pin again.
(3) Using one-shot mode or single sweep mode
Read the correspondence A-D register after confirming A-D conversion is finished. (It is known by A-
D conversion interrupt request bit.)
(4) Using repeat mode, repeat sweep mode 0 or repeat sweep mode 1
Use the undivided main clock as the internal CPU clock.
(1) If changing the measurement mode select bit is set after a count is started, the timer Bi interrupt
request bit goes to “1”.
(2) When the first effective edge is input after a count is started, an indeterminate value is transferred to
the reload register. At this time, timer Bi interrupt request is not generated.
Timer B (pulse period/pulse width measurement mode)
Interrupts
(1) Reading address 00000
16
When maskable interrupt is occurred, CPU read the interrupt information (the interrupt number
and interrupt request level) in the interrupt sequence.
The interrupt request bit of the certain interrupt written in address 00000
16
will then be set to “0”.
Reading address 00000
16
by software sets enabled highest priority interrupt source request bit to “0”.
Though the interrupt is generated, the interrupt routine may not be executed.
Do not read address 00000
16
by software.
(2) Setting the stack pointer
The value of the stack pointer immediately after reset is initialized to 0000
16
. Accepting an
interrupt before setting a value in the stack pointer may become a factor of runaway. Be sure to
set a value in the stack pointer before accepting an interrupt.
When using the NMI interrupt, initialize the stack point at the beginning of a program. Concerning
the first instruction immediately after reset, generating any interrupts including the NMI interrupt is
prohibited.
(3) The NMI interrupt
The NMI interrupt can not be disabled. Be sure to connect NMI pin to Vcc via a pull-up resistor if
unused.
Do not get either into stop mode with the NMI pin set to “L”.
(1) When returning from stop mode by hardware reset, RESET pin must be set to “L” level until main clock
oscillation is stabilized.
(2) When switching to either wait mode or stop mode, instructions occupying four bytes either from the
WAIT instruction or from the instruction that sets the every-clock stop bit to “1” within the instruction
queue are prefetched and then the program stops. So put at least four NOPs in succession either to
the WAIT instruction or to the instruction that sets the every-clock stop bit to “1”.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M30621MCM-F40GP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30621MCM-F46GP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30621MCM-F52GP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30621MCM-F546GP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30621MCM-XXXGP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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