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參數(shù)資料
| 型號： | M37548G2-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20 |
| 文件頁數(shù)： | 44/86頁 |
| 文件大小： | 1437K |
| 代理商： | M37548G2-XXXFP |
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Rev.2.02
Mar 31, 2009
Page 47 of 81
REJ03B0210-0202
7548 Group
Fig 65. Structure of clock mode register
Note
Switching to XIN/XCIN Oscillator
After a reset is cleared, operation starts using the low-speed on-
chip oscillator. When switching to XIN/XCIN oscillator, make
sure to set a sufficient wait duration with the on-chip oscillator to
allow the XIN/XCIN oscillator to stabilize.
Low-speed on-chip oscillator oscillation control bit
(Notes 1, 2, and 4)
0: Oscillation start
1: Oscillation stop
High-speed on-chip oscillator oscillation control bit
(Notes 2 and 4)
0: Oscillation start
1: Oscillation stop
XIN/XCIN oscillation control bit (Notes 2 and 4)
0: Oscillation start
1: Oscillation stop
Oscillation stabilization time set bit after release of the
STP instruction
0: Timer 1 set to “0116” and prescaler 12 to “FF16”
automatically
1: Un-automatically
Clock selection bits (Notes 3 and 4)
b5 b4
0 0 : Low-speed on-chip oscillator
0 1 : High-speed on-chip oscillator
1 0 : XIN/XCIN oscillation, External clock
1 1 : Not available
Clock division ratio selection bit
b7 b6
0 0 :
φSOURCE/8 (low-speed mode)
0 1 :
φSOURCE/4 (middle-speed mode)
1 0 :
φSOURCE/2 (high-speed mode)
1 1 : No division (double-speed mode)
b7
Clock mode register
(CLKM: address 003716, initial value: 0216)
b0
Notes 1: When stopping the low-speed on-chip oscillator is disabled by setting the low-speed
on-chip oscillator control bit (bit 4 in FSROM2), “1” cannot be written to this bit.
The low-speed on-chip oscillator does not stop even in stop mode.
2: “1” cannot be written to the oscillation control bits (bits 2 to 0) of the clock selected
as
φSOURCE by the clock selection bits.
3: When “oscillation pins not used” is set by the oscillation method selection bits (bits 1
and 0 in FSROM1), “102” cannot be written to these bits.
4: Do not change the values of the clock selection bits and the clock oscillation control
bits at the same time using a single instruction. Always use different instructions to
rewrite these values.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37548G2FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| M37548G1FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| M37549G1-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| M37549G3-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| M37560M8-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37548G3FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37548G3FP#U0 | 功能描述:MCU 6K ROM 256K 20-SSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標準包裝:250 系列:LPC11Uxx 核心處理器:ARM? Cortex?-M0 芯體尺寸:32-位 速度:50MHz 連通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外圍設(shè)備:欠壓檢測/復(fù)位，POR，WDT 輸入/輸出數(shù):40 程序存儲器容量:96KB（96K x 8） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):1.8 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-LQFP 包裝:托盤 其它名稱:568-9587 |
| M37548G3-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37549G1FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37549G1-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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