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參數(shù)資料
| 型號： | M306H3FCFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP116 |
| 封裝： | 20 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-116 |
| 文件頁數(shù)： | 72/135頁 |
| 文件大?。?/td> | 2583K |
| 代理商： | M306H3FCFP |
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Rev.1.00
2004.03.23
page 41 of 320
M306H3MC-XXXFP/FCFP
System clock control register 0 (Note 1)
Symbol
Address
After reset (Note 14)
(START pin = Vcc)
(START pin = Vss)
CM0
000616
010010002
01111000 2
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
0 0 : I/O port P57
0 1 : fC output
1 0 : f8 output
1 1 : f32 output
b1 b0
CM07
CM05
CM04
CM03
CM01
CM02
CM00
CM06
Clock output function
select bit
(Valid only in single-chip
mode)
WAIT peripheral function
clock stop bit (Note 10)
0 : Do not stop peripheral function clock in wait mode
1 : Stop peripheral function clock in wait mode (Note 8)
XCIN-XCOUT drive capacity
select bit (Note 2)
0 : LOW
1 : HIGH
Port XC select bit
0 : I/O port P86, P87
1 : XCIN-XCOUT generation function(Note 9)
Main clock stop bit
(Notes 3, 10, 12, 13)
0 : On
1 : Off (Note 4, Note5)
Main clock division select
bit 0 (Notes 7, 13)
0 : CM16 and CM17 valid
1 : Division by 8 mode
System clock select bit
(Notes 6, 10, 11, 12)
0 : Main clock
1 : Sub-clock
Note 1: Write to this register after setting the PRC0 bit of PRCR register to “1” (write enable).
Note 2: The CM03 bit is set to “1” (high) when the CM04 bit is set to “0” (I/O port) or the microcomputer goes to a stop mode.
Note 3: This bit is provided to stop the main clock when the low power dissipation mode is selected. This bit cannot be used for
detection as to whether the main clock stopped or not. To stop the main clock, the following setting is required:
(1) Set the CM07 bit to “1” (Sub-clock select) with the sub-clock stably oscillating.
(2) Set the CM05 bit to “1” (Stop).
Note 5: When CM05 bit is set to “1, the XOUT pin goes “H”. Furthermore, because the internal feedback resistor remains connected,
the XIN pin is pulled “H” to the same level as XOUT via the feedback resistor.
Note 6: After setting the CM04 bit to “1” (XCIN-XCOUT oscillator function), wait until the sub-clock oscillates stably before switching
the CM07 bit from “0” to “1” (sub-clock).
Note 7: When entering stop mode from high or middle speed mode, the CM06 bit is set to “1” (divide-by-8 mode).
Note 8: The fC32 clock does not stop. During low speed or low power dissipation mode, do not set this bit to “1” (peripheral clock
turned off when in wait mode).
Note 9: To use a sub-clock, set this bit to “1”. Also make sure ports P8 6 and P87 are directed for input, with no pull-ups.
Note 10: When the PM21 bit of PM2 register is set to “1” (clock modification disable), writing to the CM02, CM05, and CM07 bits has
no effect.
Note 11: If the PM21 bit needs to be set to “1”, set the CM07 bit to “0”(main clock) before setting it.
Note 12: To use the main clock as the clock source for the CPU clock, follow the procedure below.
(1) Set the CM05 bit to “0” (oscillate).
(2) Wait until td(M-L) elapses or the main clock oscillation stabilizes, whichever is longer.
(3) Set the CM07 bit all to “0”.
Note 13: When the CM05 bit is set to “1” (main clock turned off), the CM06 bit is fixed to “1” (divide-by-8 mode) and the
Note 14: Keep in mind that the values after reset differ by the input voltage at the START pin.
CM15 bit is fixed to “1” (drive capability high).
RW
(Note 2)
RW
Note 4: During external clock input, only the clock oscillation buffer is turned off and clock input is accepted if the sub clock is not
chosen as a CPU clock.
Figure 2.5.2. CM0 Register
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M306H3FCFP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 128KB FLASH 5V 116LQFP - Trays |
| M306H3MC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
| M306H5FGFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
| M306H5FGFP#U0 | 功能描述:IC M16C/6H MCU FLASH 116LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:M16C™ M16C/60 標準包裝:160 系列:S08 核心處理器:S08 芯體尺寸:8-位 速度:40MHz 連通性:I²C，LIN，SCI，SPI 外圍設備:LCD，LVD，POR，PWM，WDT 輸入/輸出數(shù):53 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1.9K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 12x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 包裝:托盤 |
| M306H5MC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER |
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