MCZ33975EK Freescale Semiconductor, MCZ33975EK Datasheet - Page 13

• Manufacturer Part Number: MCZ33975EK
• Description: IC DETECTOR MULT SWITCH 32-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33975EK

• Applications: Automotive
• Interface: SPI
• Voltage - Supply: 5.5 V ~ 28 V
• Package / Case: 32-SOIC (7.5mm Width) Exposed Pad, 32-eSOIC, 32-HSOIC
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WAKE
with VDD applied, the INT pin must be high for a negative
edge of
the device in Sleep Mode,
operation.
LOAD SUPPLY VOLTAGE (VPWR)
33975 IC. The VPWR pin requires external reverse battery
and transient protection. The maximum input voltage on
V
provided from the V
LOGIC VOLTAGE (VDD)
microprocessor interface (SPI) pins. Current from VDD is
used to drive the SO output, and the pull-up current for
and
negative edge of
GROUND (GND)
for inputs programmed as switch-to-battery inputs.
Analog Integrated Circuit Device Data
Freescale Semiconductor
PWR
In Sleep Mode with the
The VPWR pin is battery input and Power-ON Reset to the
The VDD input pin is used to determine logic levels on the
The GND pin provides ground for the IC as well as ground
INT
is 50V. All wetting, sustain, and internal logic current is
will place the 33975 in Normal Mode. In Sleep Mode
WAKE
pins. VDD must be applied for a wake-up from the
to wake up the device. If VDD is not applied to
CS
PWR
or
INT
pin.
WAKE
INT
.
does not affect the
pin high, the falling edge of
WAKE
CS
PROGRAMMABLE SWITCHES (SP0–SP7)
programmed to read switch-to-ground or switch-to-battery
contacts. The input is compared with a 4.0V reference. When
programmed to be switch-to-battery, voltages greater than
4.0V are considered closed. Voltages less than 4.0V are
considered open. The opposite holds true when inputs are
programmed as switch-to-ground. Programming features are
defined in
Operation
Voltages greater than the V
current through the SP inputs to the VPWR pin. Transient
battery voltages greater than 38/40V must be clamped by an
external device.
SWITCH-TO-GROUND (SG0–SG13)
is compared with a 4.0V reference. Voltages greater than
4.0V are considered open. Voltages less than 4.0V are
considered closed. Programming features are defined in
Table 6
section of this datasheet beginning on page 16. Voltages
greater than the V
through the SG inputs to the VPWR pin. Transient battery
voltages greater than 38/40V must be clamped by an external
device.
The 33975 device has 8 switch inputs capable of being
The SGn pins are switch-to-ground inputs only. The input
through
Table 6
section of this datasheet beginning on page 16.
Table 11
PWR
through
supply voltage will source current
in the
Table 11
PWR
FUNCTIONAL PIN DESCRIPTION
FUNCTIONAL DESCRIPTIONS
Functional Device Operation
supply voltage will source
in the
Functional Device
33975
13