MC33993DWB Freescale Semiconductor, MC33993DWB Datasheet - Page 10

• Manufacturer Part Number: MC33993DWB
• Description: IC SWITCH I/O INTERFACE 32-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33993DWB

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 32-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

WAKE-UP (WAKE)
input. The pin is designed to control a power supply Enable
pin. In the Normal mode, the WAKE pin is low. In the Sleep
mode, the WAKE pin is high. The WAKE pin has a pull-up to
the internal +5.0 V supply.
WAKE will place the 33993 in Normal mode. In Sleep mode
with V
of WAKE to wake up the device. If V
device in Sleep mode, INT does not affect the WAKE
operation.
BATTERY INPUT (VPWR)
33993 IC. The VPWR pin requires external reverse battery
and transient protection. Maximum input voltage on VPWR is
50 V. All wetting, sustain, and internal logic current is
provided from the VPWR pin.
VOLTAGE DRAIN SUPPLY (VDD)
microprocessor interface (SPI) pins. Current from VDD is
used to drive SO output and the pull-up current for CS and
INT pins. V
edge of CS or INT.
10
33993
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
The WAKE pin is an open-drain output and a wake-up
In Sleep mode with the WAKE pin high, falling edge of
The VPWR pin is battery input and Power-ON Reset to the
The VDD input pin is used to determine logic levels on the
DD
applied, the INT pin must be high for negative edge
DD
must be applied for wake-up from negative
DD
is not applied to the
GROUND (GND)
for inputs programmed as switch-to-battery inputs.
PROGRAMMABLE SWITCHES 0–7 (SP0 – SP7)
programmed to read switch-to-ground or switch-to-battery
contacts. The input is compared with a 4.0 V reference.
When programmed to be switch-to-battery, voltages greater
than 4.0 V are considered closed. Voltages less than 4.0 V
are considered open. The opposite holds true when inputs
are programmed as switch-to-ground. Programming features
are defined in
Commands and Registers
greater than the V
through the SP inputs to the V
voltages greater than 40 V must be clamped by an external
device.
SWITCH-TO-GROUND INPUTS 0–13 (SG0 – SG13)
is compared with a 4.0 V reference. Voltages greater than
4.0 V are considered open. Voltages less than 4.0 V are
considered closed. Programming features are defined in
Table 5
Registers
VPWR supply voltage will source current through the SG
inputs to the VPWR pin. Transient battery voltages greater
than 40 V must be clamped by an external device.
The GND pin provides ground for the IC as well as ground
The 33993 device has 8 switch inputs capable of being
The SGn pins are switch-to-ground inputs only. The input
through
section of this datasheet. Voltages greater than the
Table 5
Table 10
PWR
through
Analog Integrated Circuit Device Data
supply voltage will source current
in the
section of this datasheet. Voltages
PWR
Table 10
Logic Commands and
Freescale Semiconductor
pin. Transient battery
in the
Logic