BD3378MUV-M
车载用 多输入监控LSI
BD3378MUV-M
车载用 多输入监控LSI
BD3378MUV-M是22通道的开关输入监测LSI。其作用是监测各通道所连接的机械开关的状态变化、使MCU产生中断。使用串行接口读取中断因素并写入内部寄存器。22通道的开关输入分为VPUB、VPUA两种电源系统，可按电池系统和电源控制系统分类使用。动作模式备有常规模式和睡眠模式两种。各模式可通过设定寄存器，使用开关端子连续监测设定和间歇监测设定。使用间歇监测设定时是以固定周期监测开关状态变化，可降低功耗。而且，通过使用各种电源系统时序动作和全部开关统一时序动作设定，还能实现低噪声动作。
主要规格
功能安全:
特性：
Fully Functional Voltage(Min.)[V]
6
Fully Functional Voltage(Max.)[V]
28
VDDI Supply Voltage(Min.)[V]
3.1
VDDI Supply Voltage(Max.)[V]
5.25
Switch Input Number
22
Switch Input Voltage(Min.)[V]
-14
Switch Input Voltage(Max.)[V]
40
Wetting Current (Min)
1mA, 3mA, 5mA, 10mA, 15mA
Wetting Current Type
Pull up / Pull down
Intermittent Monitoring Current [µA]
100
Clock Frequency (Max)[MHz]
4.4
Control Interface
SPI
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size [mm]
7x7 (t=1)
Common Standard
AEC-Q100 (Automotive Grade)
特点：
- AEC-Q100 Qualified(Grade 1)
- Uses 3.3V/5.0V SPI Protocol in Communicating with the MCU
- Serial Communication Error Checking through 8bit-CRC
- Thermal Shutdown Protection (TSD)
- Power on Reset (POR)
- Selectable Source/Sink Current Levels through Register Settings
- Wetting Current Timer Capability
- 8 Source or Sink Input Pins (VPUA)
- 14 Source Input Pins
- Separable Power Supply VPUA: 16ch (INA&INZ), VPUB: 6ch (INB)
- Interrupt Notification upon Switch Status Change
- 1 Time to 6 Times Matched LPF that Eliminates Input Pin Noise
- Low Current Consumption (Intermittent Monitoring)
- Status Display of Selected Pin at DMUX Pin
