參數(shù)資料
型號(hào)： M30800MC-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(jī)
文件頁(yè)數(shù)： 42/317頁(yè)
文件大?。?/td> 4621K
代理商： M30800MC-XXXFP
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deveopmen
Clock Generating Circuit
Preliminary Specifications REV.D
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C/80 (100-pin version) group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
42
The following paragraphs describes the clocks generated by the clock generating circuit.
(1) Main clock
The main clock is generated by the main clock oscillation circuit. After a reset, the clock is divided by 8 to
the BCLK. The clock can be stopped using the main clock stop bit (bit 5 at address 0006
16
). Switching to
the sub clock oscillation as CPU operating clock source before stopping the clock reduces the power
dissipation.
When the main clock is stoped (bit 5 at address 0006
16
=1) or the mode is shifted to stop mode (bit 0 at
address 0007
16
=1), the main clock division register (address 000C
16
) is set to the division by 8 ("08
16
").
After the oscillation of the main clock oscillation circuit has stabilized, the drive capacity of the main clock
oscillation circuit can be reduced using the X
IN
-X
OUT
drive capacity select bit (bit 5 at address 0007
16
).
Reducing the drive capacity of the main clock oscillation circuit reduces the power dissipation. This bit
defaults to “1” when shifting from high-speed or middle-speed mode to stop mode and after a reset.
This bit remains in low-speed and low power dissipation mode.
(2) Sub clock
The sub clock is generated by the sub clock oscillation circuit. No sub clock is generated after a reset.
After oscillation is started using the port Xc select bit (bit 4 at address 0006
16
), the sub clock can be
selected as the BCLK by using the system clock select bit (bit 7 at address 0006
16
). However, be sure
that the sub clock oscillation has fully stabilized before switching.
After the oscillation of the sub clock oscillation circuit has stabilized, the drive capacity of the sub clock
oscillation circuit can be reduced using the X
CIN
-X
COUT
drive capacity select bit (bit 3 at address 0006
16
).
Reducing the drive capacity of the sub clock oscillation circuit reduces the power dissipation. This bit
changes to “1” when shifting to stop mode and at a reset.
(3) BCLK
The BCLK is the clock that drives the CPU, and is either fc or is derived by dividing the main clock by 1,
2, 3, 4, 6, 8, 10, 12, 14 or 16. The BCLK is derived by dividing the main clock by 8 after a reset.
This signal is output from BCLK pin using CM01, CM00 and PM07 in memory expansion mode and
microprocessor mode.
When main clock is stoped or shifting to stop mode, the main clock division register (address 000C
16
) is
set to the division by 8 ("08
16
").
(4) Peripheral function clock
f
1
, f
8
, f
32
, f
1SIO2
, f
8SIO2
, f
32SIO2
The clock for the peripheral devices is derived from the main clock or by dividing it by 8 or 32. The
peripheral function clock is stopped by stopping the main clock or by setting the WAIT peripheral function
clock stop bit (bit 2 at 0006
16
) to “1” and then executing a WAIT instruction.
f
AD
This clock has the same frequency as the main clock and is used for A-D conversion.
(5) f
C32
This clock is derived by dividing the sub clock by 32. It is used for the timer A and timer B counts.
(6) f
C
This clock has the same frequency as the sub clock. It is used for BCLK and for the watchdog timer.
Figure 1.8.4 shows the system clock control registers 0 and 1 and figure 1.8.5 shows main clock division
register.
相關(guān)PDF資料
PDF描述
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M30800FCGP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M30800MC-XXXGP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30800MG-XXXFP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30800MG-XXXGP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M30800SAFP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
M30800SAFP#D3 功能描述:MCU 3/5V 0K I-TEMP 100-QFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M32C/80/80 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤(pán) 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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