MCZ33811EG Freescale Semiconductor, MCZ33811EG Datasheet - Page 12

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MCZ33811EG

Manufacturer Part Number
MCZ33811EG
Description
IC SOLENOID MON 5-CH 16-SOIC
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MCZ33811EG

Applications
Solenoid Monitor
Current - Supply
1mA
Voltage - Supply
7 V ~ 17 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Product
Current Monitors
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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POWER SUPPLY AND OSCILLATOR
the VPWR pin. The VPWR pin supplies power to the internal
regulator which, in turn, supplies the analog circuit blocks.
The VDD Supply is used internally to supply the logic
circuitry. The VSPI supply is used for setting the SPI
communication threshold levels by supplying power to the
SO driver and the SI and CS input buffers. The on-chip
oscillator is used to set the solenoid sample period window
and sample rate.
MCU INTERFACE:
micro controller unit (MCU) using 16 bit Serial Peripheral
Interface (SPI) protocol. SPI serial clock frequencies up to
12
33811
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
The 33811 is designed to operate from 10.5V to 15.5V on
The 33811 device directly interfaces to a 3.3V or 5.0V
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Figure 7. Functional Internal Block Diagram
3.2MHz may be used when programming and reading output
status information. The RESET pin is used to place the 33811
into the Reset Mode. Normally the RESET pin is held at logic
0 by the MCU. When the MCU raises the RESET pin to a
logic 1, the 33811 enters the reset Mode. The reset initializes
the 5 fault outputs.
SOLENOID MONITORS: SOLM1 - SOLM5
connected to the external solenoid driver output pins. The IC
has the ability to determine the correct movement of solenoid
armatures by analyzing the variation in the voltage profile,
across the solenoid driver MOSFET, which represents the
actual solenoid current profile.
These are the five solenoid monitor inputs that are
Analog Integrated Circuit Device Data
Freescale Semiconductor

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