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MC33978AAE中文资料PDF规格书
MC33978AAE规格书详情
The 33978 is designed to detect the closing and opening of up to 22 switch contacts. The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI). This SMARTMOS device also features a 24-to-1 analog multiplexer for reading the input channels as analog inputs. The analog selected input signal is buffered and provided on the AMUX output pin for the MCU to read.
Independent programmable wetting currents are available as needed for the application. A battery and temperature monitor are included in the IC and available via the AMUX pin.
The 33978 device has two modes of operation, Normal and Low-power mode (LPM). Normal mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors the change of state on the switches. The LPM provides low quiescent current, which makes the 33978 ideal for automotive and industrial products requiring low sleep-state currents.
Features
•Fully functional operation 4.5 V ≤ VBATP ≤ 36 V
•Full parametric operation 6.0 V ≤ VBATP ≤ 28 V
•Operating switch input voltage range from -1.0 V to 36 V
•Eight programmable inputs (switches to battery or ground)
•14 switch-to-ground inputs
•Selectable wetting current (2, 6, 8, 10, 12, 14, 16, or 20 mA)
•Interfaces directly to an MCU using 3.3 V / 5.0 V SPI protocol
•Selectable wake-up on change of state
•Typical standby current IBATP = 30 μA and IDDQ = 10 μA
•Active interrupt (INT_B) on change-of-switch state
•Integrated battery and temperature sensing
Applications
•Automotive
•Heating ventilation and air conditioning (HVAC)
•Lighting
•Central gateway/in-vehicle networking
•Gasoline engine management
•Industrial
•Programmable logic control (PLC)
•Process control, temperature control
•Input-output control (I/O Control)
•Single board computer
•Ethernet switch
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
NXP |
17+ |
SOIC-32 |
13684 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
NXP/恩智浦 |
22+ |
HSSOP32 |
3000 |
原装现货 价格 数量 来电确认 |
询价 | ||
NXP |
22+ |
SOIC-32 |
5000 |
十年沉淀唯有原装 |
询价 | ||
FREESCALE |
2046+ |
HSSOP32 |
9852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
Freescale(飞思卡尔) |
2022+ |
60000 |
原厂原装,假一罚十 |
询价 | |||
NXP |
SOIC-32 |
893993 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
NXP |
23+ |
HSOP32 |
12800 |
公司只有原装 欢迎来电咨询。 |
询价 | ||
FREESCALE |
21+ |
SSOP32 |
6688 |
十年老店,原装正品 |
询价 | ||
FREESCALE |
SSOP |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
FREESCALE |
22+ |
HSSOP32 |
50000 |
只做原装假一罚十,欢迎咨询 |
询价 |