- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383737 > PC33975A (飛思卡爾半導(dǎo)體(中國)有限公司) Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current PDF資料下載
參數(shù)資料
| 型號： | PC33975A |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| 中文描述： | 多交換檢測接口，具有抑制喚醒和32毫安濕電流 |
| 文件頁數(shù)： | 21/32頁 |
| 文件大?。?/td> | 641K |
| 代理商： | PC33975A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當(dāng)前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Analog Integrated Circuit Device Data
Freescale Semiconductor
21
33975
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Figure 5
, page
10
, is a graphical description of how the
33975 device exits Sleep mode and enters Normal mode.
Notice that the device will exit Sleep mode when the interrupt
timer expires or when a switch change of state occurs. The
falling edge of
INT
triggers the MCU to wake from Sleep state.
Figure 11
illustrates the current consumed during Sleep
mode. During the 125
μ
s, the device is fully active and switch
states are read. The quiescent current is calculated by
integrating the normal running current over scan period plus
approximately 60
μ
A.
Figure 11. Sleep Current Waveform
TEMPERATURE MONITOR
With multiple switch inputs closed and the device
programmed with the wetting current timers disabled,
considerable power will be dissipated by the IC. For this
reason temperature monitoring has been implemented. The
temperature monitor is active in the Normal mode only. When
the IC temperature is above the thermal limit, the temperature
monitor will do all of the following:
Generate an interrupt.
Force all wetting current sources to revert to 2.0 mA/
4.0 mA sustain currents
Maintain the 2.0 mA/4.0 mA sustain currents and all
other functionality.
Set the thermal flag bit in the SPI output register.
The thermal flag bit in the SPI word will be cleared on rising
edge of
CS
provided the die temperature has cooled below
the thermal limit. When die temperature has cooled below
thermal limit, the device will resume previously programmed
settings.
out of 32 ms
I=V/R or 0.270 V/100
=2.7 mA
I=V/R or
6.0 mV/100
=60
μ
A
Inputs active for 125 us
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PC33975AEK | Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| PC33975AR2 | Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| PC3S12XEP100J1CAA | Microcontrollers |
| PC3S12XEP100J1CAAR | Microcontrollers |
| PC3S12XEP100J1CAG | Microcontrollers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC33975AEK | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| PC33975AR2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current |
| PC33981PNA/R2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:High-Frequency, High-Current, Self-Protected High-Side Switch (4.0 mз up to 60 kHz) |
| PC33984CHFKR2 | 制造商:Freescale Semiconductor 功能描述: |
| PC33989DW | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:System Basis Chip with High Speed CAN Transceiver |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。