參數(shù)資料
型號(hào)： M306S0FA-XXXGP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 15.36 MHz, MICROCONTROLLER, PQFP64
封裝： PLASTIC, LQFP-64
文件頁(yè)數(shù)： 138/210頁(yè)
文件大?。?/td> 1477K
代理商： M306S0FA-XXXGP
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Rev.5.01
Dec 10, 2009
page 31 of 201
REJ03B0014-0501
M16C/6S Group
b7
b6
b5
b4
b3
b2
b1
b0
RW
CM20
CM21
Oscillation stop detection register (Note 1)
Symbol
Address
After reset
CM2
000C16
0X0000002(Note 10)
Bit name
Function
Bit symbol
System clock select bit 2
(Notes 2, 3, 6, 10)
0: Oscillation stop, re-oscillation
detection function disabled
1: Oscillation stop, re-oscillation
detection function enabled
0: Main clock (On-chip Oscillator
turned off)
1: On-chip Oscillator clock
(On-chip Oscillator oscillating)
Oscillation stop, re-
oscillation detection bit
(Notes 7, 8, 9, 10)
Note 1: Write to this register after setting the PRC0 bit of PRCR register to “1” (write enable).
Note 2: When the CM20 bit is “1” (oscillation stop, re-oscillation detection function enabled), the CM27 bit is “1”
(oscillation stop, re-oscillation detection interrupt), and the CPU clock source is the main clock, the
CM21 bit is set to “1” (On-chip Oscillator clock) if the main clock stop is detected.
Note 3: If the CM20 bit is “1” and the CM23 bit is “1” (main clock turned off), do not set the CM21 bit to “0”.
Note 4: This bit becomes “1” at main clock stop detection and main clock re-oscillation detection. When this bit
changes from “0” to “1”, there arise oscillation stop, re-oscillation detection interrupt. Use this register to
discriminate the causes for oscillation stop, re-oscillation detection interrupt and watchdog timer interrupt
in the interrupt processing program. By writing “0” in the program, this bit becomes “0”. (Even when “1” is
written in the program, no change is identified for the bit. Also, this bit is not set to “0” where there occur
oscillation stop, re-oscillation detection interrupt.) When the CM22 bit is “1”, no oscillation stop, re-
oscillation detection interrupt occur even if oscillation stop or re-oscillation is detected.
Note 5: Read the CM23 bit in an oscillation stop, re-oscillation detection interrupt handling routine to determine
the main clock status.
Note 6: Effective when the CM07 bit of CM0 register is “0”.
Note 7: When the PM21 bit of PM2 register is “1” (clock modification disabled), writing to the CM20 bit has no
effect.
Note 8: Set the CM20 bit to “0” (disable) before entering stop mode. After exiting stop mode, set the CM20 bit
back to “1” (enable).
Note 9: Set the CM20 bit to “0” (disable) before setting the CM05 bit of CM0 register.
Note 10: The CM20, CM21 and CM27 bits do not change at oscillation stop detection reset.
CM22
CM23
Oscillation stop, re-
oscillation detection flag
0: Main clock stop, re-oscillation
not detected
1: Main clock stop, re-oscillation
detected
0: Main clock oscillating
1: Main clock turned off
XIN monitor flag
(Note 4)
CM27
0: Oscillation stop detection reset
1: Oscillation stop, re-oscillation
detection interrupt
Nothing is assigned. When write, set to “0”. When read, its
content is indeterminate.
Operation select bit
(when an oscillation stop,
re-oscillation is detected)
(Note 10)
RW
RO
(b6)
(Note 5)
Reserved bit
(b5-b4)
Must set to “0”
RW
00
Figure 1.7.4. CM2 Register
Clock Generation Circuit
相關(guān)PDF資料
PDF描述
M306V7FJAFP 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
M306V7MJ-XXXFP 16-BIT, MROM, 16.1 MHz, MICROCONTROLLER, PQFP100
M306V7MG-XXXFP 16-BIT, MROM, 16.1 MHz, MICROCONTROLLER, PQFP100
M306V7FJFP 16-BIT, FLASH, 16.1 MHz, MICROCONTROLLER, PQFP100
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M306S0FA-XXXGP-U5 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M306S0T-PRB 功能描述:DEV POD PROBE FOR THE M16C/6S RoHS:否 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:USB 至 1-Wire? RJ11 適配器 適用于相關(guān)產(chǎn)品:1-Wire? 設(shè)備 產(chǎn)品目錄頁(yè)面:1429 (CN2011-ZH PDF)
M306V0EEFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M306V0EEFS 功能描述:EMULATION PROBE FOR M16C/6N [FOR RoHS:否 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 配件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:適配器板 適用于相關(guān)產(chǎn)品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE
M306V0ME 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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