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參數(shù)資料
| 型號： | R5F213J5TNNP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, QCC40 |
| 封裝： | 5 X 5 MM, 0.40 MM PITCH, QFN-40 |
| 文件頁數(shù)： | 10/45頁 |
| 文件大?。?/td> | 440K |
| 代理商： | R5F213J5TNNP |
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18
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
6.1.4
ADC Clock – clk
ADC
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks in order to reduce
noise generated by digital circuitry. This gives more accurate ADC conversion results.
The ADC is available in ATtiny5/10, only.
6.2
Clock Sources
All synchronous clock signals are derived from the main clock. The device has three alternative sources for the
main clock, as follows:
External Clock (see page 18)
See Table 6-3 on page 21 on how to select and change the active clock source.
6.2.1
Calibrated Internal 8 MHz Oscillator
The calibrated internal oscillator provides an approximately 8 MHz clock signal. Though voltage and temperature
dependent, this clock can be very accurately calibrated by the user. See Table 16-2 on page 117, Figure 17-39 on
page 141 and Figure 17-40 on page 141 for more details.
This clock may be selected as the main clock by setting the Clock Main Select bits CLKMS[1:0] in CLKMSR to
0b00. Once enabled, the oscillator will operate with no external components. During reset, hardware loads the cal-
ibration byte into the OSCCAL register and thereby automatically calibrates the oscillator. The accuracy of this
calibration is shown as Factory calibration in Table 16-2 on page 117.
When this oscillator is used as the main clock, the watchdog oscillator will still be used for the watchdog timer and
reset time-out. For more information on the pre-programmed calibration value, see section “Calibration Section” on
6.2.2
External Clock
To use the device with an external clock source, CLKI should be driven as shown in Figure 6-2. The external clock
is selected as the main clock by setting CLKMS[1:0] bits in CLKMSR to 0b10.
Figure 6-2.
External Clock Drive Configuration
When applying an external clock, it is required to avoid sudden changes in the applied clock frequency to ensure
stable operation of the MCU. A variation in frequency of more than 2% from one clock cycle to the next can lead to
unpredictable behavior. It is required to ensure that the MCU is kept in reset during such changes in the clock
frequency.
EXTERNAL
CLOCK
SIGNAL
CLKI
GND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5F213J5TNNP#W4 | 功能描述:MCU 24KB ROM 2KB RAM 40-QFN RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/3x/3JT 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 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:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| R5F213J6ANNP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F213J6CNNP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F213J6CNNP#U0 | 功能描述:MCU 1KB FLASH 32K ROM 36-QFN RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/3x/3JC 標(biāo)準(zhǔn)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 |
| R5F213J6CNNP#W4 | 功能描述:MCU 32KB ROM 2.5KB RAM 36-QFN RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/3x/3JC 標(biāo)準(zhǔn)包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO，I²C，LIN，UART/USART 外圍設(shè)備:DMA，LVD，POR，PWM，WDT 輸入/輸出數(shù):27 程序存儲器容量:16KB（16K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 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:38-SSOP 包裝:托盤 |
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