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参数资料
| 型号： | MC33912BAC |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 71/95页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS CHIP 32LQFP |
| 标准包装： | 250 |
| 应用： | 系统基础芯片 |
| 电流 - 电源： | 4.5mA |
| 电源电压： | 5.5 V ~ 27 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
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MC33912BAC / MC34912BAC
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
MC33912 - Functional Block Diagram
Integrated Supply
Hall Sensor Supply
HVDD
Voltage Regulator
VDD
Analog Circuitry
High Side Drivers
Window Watchdog
Wake-Up
HS1 - HS2
Digital / Analog Input
Voltage, Current & Temperature Sense
MCU Interface and Output Control
Low Side Drivers
LS1 - LS2
LIN Physical Layer
Interface
SPI Interface
LIN Interface / Control
Reset & IRQ Logic
LS/HS - PWM Control
Analog Output 0/1
Integrated Supply
Analog Circuitry
MCU Interface and Output Control
Drivers
Figure 37. Functional Internal Block Diagram
ANALOG CIRCUITRY
The 33912 is designed to operate under automotive
operating conditions. A fully configurable window watchdog
circuit will reset the connected MCU in case of an overflow.
Two low power modes are available with several different
wake-up sources to reactivate the device. Four analog /
digital inputs can be sensed or used as the wake-up source.
The device is capable of sensing the supply voltage
(VSENSE), the internal chip temperature (CTEMP) as well as
the motor current using an external sense resistor.
HIGH SIDE DRIVERS
Two current and temperature protected High Side drivers
with PWM capability are provided to drive small loads such as
Status LED’s or small lamps. Both Drivers can be configured
for periodic sense during low power modes.
LOW SIDE DRIVERS
Two current and temperature protected Low Side drivers with
PWM capability are provided to drive H-Bridge type relays for
power motor applications
MCU INTERFACE
The 33912 is providing its control and status information
through a standard 8-Bit SPI interface. Critical system events
such as Low- or High-voltage/Temperature conditions as well
as over-current conditions in any of the driver stages can be
reported to the connected MCU via IRQ or RST. Both Low
Side and both High Side driver outputs can be controlled via
the SPI register as well as the PWMIN input. The integrated
LIN physical layer interface can be configured via SPI register
and its communication is driven through the RXD and TXD
device pins. All internal analog sources are multiplexed to the
A DOUT 0 pin. The current sense analog signal is directly
routed through ADOUT1.
VOLTAGE REGULATOR OUTPUTS
Two independent voltage regulators are implemented on the
33912. The VDD main regulator output is designed to supply
a MCU with a precise 5.0 V. The switchable HVDD output is
dedicated to supply small peripherals as hall sensors.
LIN PHYSICAL LAYER INTERFACE
The 33912 provides a LIN 2.0 compatible LIN physical layer
interface with selectable slew rate and various diagnostic
features.
33912
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
71
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33912BACR2 | 功能描述:LIN 收发器 SBC LIN2G - HI END RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MC33912G5AC | 功能描述:LIN 收发器 SBC LIN 2.5G RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MC33912G5ACR2 | 功能描述:LIN 收发器 SBC LIN 2.5G RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MC33916 | 制造商:PRIVATE LABEL 功能描述:DC Brushless Fan, 70x70x25mm, 12VDC Ball |
| MC33919 | 制造商:PRIVATE LABEL 功能描述:FAN |
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