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參數(shù)資料
| 型號： | MB9AF312LPMC1 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP64 |
| 封裝： | 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 80/114頁 |
| 文件大?。?/td> | 1357K |
| 代理商： | MB9AF312LPMC1 |
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ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
68
14.2.5 Digital Input Enable and Sleep Modes
As shown in Figure 14-2 on page 65, the digital input signal can be clamped to ground at the input of the Schmitt Trigger.
The signal denoted SLEEP in the figure, is set by the MCU sleep controller in power-down mode, power-save mode, and
standby mode to avoid high power consumption if some input signals are left floating, or have an analog signal level close to
VCC/2.
SLEEP is overridden for port pins enabled as external interrupt pins. If the external interrupt request is not enabled, SLEEP
is active also for these pins. SLEEP is also overridden by various other alternate functions as described in
If a logic high level (“one”) is present on an asynchronous external interrupt pin configured as “Interrupt on rising edge, falling
edge, or any logic change on pin” while the external interrupt is not enabled, the corresponding external interrupt flag will be
set when resuming from the above mentioned Sleep mode, as the clamping in these sleep mode produces the requested
logic change.
14.2.6 Unconnected Pins
If some pins are unused, it is recommended to ensure that these pins have a defined level. Even though most of the digital
inputs are disabled in the deep sleep modes as described above, floating inputs should be avoided to reduce current
consumption in all other modes where the digital inputs are enabled (reset, active mode and Idle mode).
The simplest method to ensure a defined level of an unused pin, is to enable the internal pull-up. In this case, the pull-up will
be disabled during reset. If low power consumption during reset is important, it is recommended to use an external pull-up or
pull-down. Connecting unused pins directly to VCC or GND is not recommended, since this may cause excessive currents if
the pin is accidentally configured as an output.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB9AF314LAPMC1-G-JNE2 | 制造商:FUJITSU 功能描述: |
| MB9AF314LAPMC-G-JNE2 | 制造商:Fujitsu 功能描述:Bulk |
| MB9AF314LAQN-G-AVE2 | 功能描述:ARM? Cortex?-M3 FM3 MB9A310A Microcontroller IC 32-Bit 40MHz 256KB (256K x 8) FLASH 64-QFN Exposed Pad (9x9) 制造商:cypress semiconductor corp 系列:FM3 MB9A310A 包裝:托盤 零件狀態(tài):有效 核心處理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:40MHz 連接性:CSIO，I2C，LIN，UART/USART，USB 外設:DMA，LVD，POR，PWM，WDT I/O 數(shù):51 程序存儲容量:256KB（256K x 8） 程序存儲器類型:閃存 EEPROM 容量:- RAM 容量:32K x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 9x12b 振蕩器類型:內部 工作溫度:-40°C ~ 105°C（TA） 封裝/外殼:64-VFQFN 裸露焊盤 供應商器件封裝:64-QFN 裸露焊盤（9x9） 標準包裝:260 |
| MB9AF314LPMC1-ESE1 | 制造商:FUJITSU 功能描述: |
| MB9AF314LPMC1-GE1 | 制造商:FUJITSU 功能描述: |
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