MC33993DWB Freescale Semiconductor, MC33993DWB Datasheet

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MC33993DWB

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

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC33993DWB
Manufacturer:
FREESCALE
Quantity:
20 000
Freescale Semiconductor
Advance Information
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2003-2007. All rights reserved.
Multiple Switch Detection
Interface
the closing and opening of up to 22 switch contacts. The switch status,
either open or closed, is transferred to the microprocessor unit (MCU)
through a serial peripheral interface (SPI). The device also features a
22-to-1 analog multiplexer for reading inputs as analog. The analog
input signal is buffered and provided on the AMUX output pin for the
MCU to read.
The Sleep mode provides low quiescent current and enables the
wake-up features of the device. Normal mode allows programming of
the device and supplies switch contacts with pull-up or pull-down
current as it monitors switch change of state.
circuit board area. Low quiescent current makes the 33993 ideal for
automotive and industrial products requiring low sleep state currents.
The 33993 Multiple Switch Detection Interface is designed to detect
The 33993 device has two modes of operation, Sleep and Normal.
The 33993 is packaged in the 32-pin wide-body SOIC, reducing
Features
• Designed to Operate 5.5 V ≤ V
• Switch Input Voltage Range -14 V to V
• Interfaces Directly to Microprocessor Using 3.3 V / 5.0 V SPI
• Selectable Wake-Up on Change of State
• Selectable Wetting Current (16 mA or 2.0 mA)
• 8 Programmable Inputs (Switches to Battery or Ground)
• 14 Switch-to-Ground Inputs
• V
• Active Interrupt (
• Pb-Free Packaging Designated by Suffix Code EW
Protocol
PWR
Standby Current 100 µA Typical, V
VBAT
VBAT
VBAT
INT
) on Change-of-Switch State
PWR
SP0
SP1
SP7
SG0
SG1
SG12
SG13
Figure 1. MC33993 Simplified Application Diagram
33993
≤ 26 V
PWR
WAKE
AMUX
VPWR
SCLK
DD
GND
VDD
INT
SO
, 40 V Max
CS
SI
Standby Current 20 µA Typical
V
DD
MC33993DWB/R2
MCZ33993EW/R2
Power Supply
Enable
Watchdog
Device
LVI
Reset
ORDERING INFORMATION
DETECTION INTERFACE
EW SUFFIX (PB-FREE)
MULTIPLE SWITCH
Document Number: MC33993
98ARH99137A
32-PIN SOICW
33993
INT
AN0
MOSI
SCLK
CS
MISO
-40°C to 125°C
DW SUFFIX
Temperature
V
Range (T
DD
MCU
A
)
Rev. 6, 5/2008
32 SOICW
Package

Related parts for MC33993DWB

MC33993DWB Summary of contents

Page 1

... This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2003-2007. All rights reserved. ≤ Device , 40 V Max PWR MC33993DWB/R2 MCZ33993EW/R2 Standby Current 20 µA Typical DD Power Supply LVI 33993 Enable ...

Page 2

... Ref Comparator , V , 5.0 V VPWR DD POR VDD Bandgap GND Sleep PWR 5.0 V Oscillator V and PWR 5.0 V 5.0 V Control 125 kΩ 5.0 V WAKE V DD 125 kΩ INT INT Control µA CS SCLK Analog Mux + Output AMUX – Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 3

... Switch-to-Ground Inputs 18 – 24 SG13 – – Battery Input PWR 17 Wake-Up WAKE 29 Interrupt INT 30 AMUX Analog Multiplex Output 31 V Voltage Drain Supply SPI Slave Out Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS GND SP0 5 28 SP1 6 27 SP2 7 26 SP3 8 25 ...

Page 4

... ESD1 ±200 V ESD2 T -55 to 150 STG T -40 to 125 C T -40 to 150 θ θ Note 5 PPRT = 1500 Ω), the Machine Model (MM) = 100 pF, R ZAP = 4.0pF). Analog Integrated Circuit Device Data Freescale Semiconductor Unit MHz V ° C ° C ° ° C/W °C ...

Page 5

... Thermal shutdown pull-up and pull-down current sources only. 2.0 mA current source / sink and all other functions remain active. 8. This parameter is guaranteed by design but is not production tested. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ 5.25 V, 8.0 V ≤ V ≤ -40°C ≤ T PWR DD ...

Page 6

... V µA -10 – 10 µA -10 – 10 µA 30 – 100 0.8 – – – 0.4 – – µ 100 0.5 – – 0.2 0.4 µ 100 V 4.0 4.3 5.3 V – 0.2 0.4 V – – 40 Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 7

... Time required for valid output status data to be available on SO pin. 15. Time required for output states data to be terminated at SO pin. 16. Time required to obtain valid data out from SO following the rise of SCLK with 200 pF load. Analog Integrated Circuit Device Data Freescale Semiconductor ≤ 5.25 V, 8.0 V ≤ V ≤ -40°C ≤ PWR = ...

Page 8

... Figure 6. Normal Mode Interrupt Operation t lag t valid SO(dis) LSB out Wake-Up From Closed Switch Sleep Mode Normal Sleep Command Mode Switch state change with CS low generates INT Switch open “0” Switch Switch Status Status Command Command Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 9

... logic high state. When the logic high state, any signal on the SCLK and SI pins will be ignored and the SO pin is tri-state. Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION INTRODUCTION switch inputs may be read as analog inputs through the analog multiplexer (AMUX) ...

Page 10

... VPWR pin. Transient battery voltages greater than 40 V must be clamped by an external device. Table 5 through Table 10 in the Logic section of this datasheet. Voltages supply voltage will source current PWR pin. Transient battery PWR Table 10 in the Logic Commands and Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 11

... Multiple ICs may be SPI-configured in parallel or serial. Figures 8 and 9 show the configurations. When using the serial configuration, 48-clock cycles are required to transfer data in / out of the ICs. Analog Integrated Circuit Device Data Freescale Semiconductor MC68HCXX Microcontroller Figure 7 Shift Register Parallel Ports 33993 24-Bit Shift Register Figure 8 ...

Page 12

... Interrupt (Metallic Command ) (Wetting Current Timer (Tri-State Command ) (Analog Command ) (Calibration Command ) . The to the MCU is CS INT will not clear INT if a switch has closed during SPI low). This prevents switch states from Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 13

... The higher level of current is designed to keep switch contacts from building up oxides that form on the switch contact surface. Analog Integrated Circuit Device Data Freescale Semiconductor LOGIC COMMANDS AND REGISTERS or update the Programmable Switch Register via software at any time in Normal mode. Regardless of the setting, when the 5) ...

Page 14

... Table 8 sp7 sp6 sp5 sp4 sp3 sp2 sp1 sp0 sp7 sp6 sp5 sp4 sp3 sp2 sp1 sp0 Table 10). The Typical Applications section of this datasheet Analog Integrated Circuit Device Data Freescale Semiconductor 1 0 sp0 sg0 ...

Page 15

... The reset command resets all registers to Power-ON Reset (POR) state. Refer to Table 14, page 16, for POR Reset Command Analog Integrated Circuit Device Data Freescale Semiconductor Not used CALIBRATION OF TIMERS In cases where an accurate time base is required, the user Analog Channel may calibrate the internal timers using the calibration Select command (refer to receives the calibration command, the device expects 512 µ ...

Page 16

... SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 SG9 SG8 SG7 SG6 SG5 SG4 SG3 SG2 SG1 SG0 int int int scan scan timer timer timer timer timer SG9 SG8 SG7 SG6 SG5 SG4 SG3 SG2 SG1 SG0 Analog Integrated Circuit Device Data Freescale Semiconductor scan timer X ...

Page 17

... MCU read rate will not be acknowledged. The 33993 device will exit the Normal mode and enter the Sleep mode only with a valid sleep command. Analog Integrated Circuit Device Data Freescale Semiconductor Table 15. Serial Output (SO) Bit Data Type of Input Programmed SO SPI Bit ...

Page 18

... I=V/R or 0.270V/100ohm = 2.7mA I=V/R or 0.270V/100ohm = 2.7mA I=V/R or 0.270V/100ohm = 2.7mA I=V/R or 0.270 V/100 Ω=2.7 mA I=V/R or I=V/R or 6mV/100ohm = 60 uA I=V/R or 6mV/100ohm = 60 uA I=V/R or 6mV/100ohm = 60 uA 6.0 mV/100 Ω=60 µA Figure 11. Sleep Current Waveform Analog Integrated Circuit Device Data Freescale Semiconductor 1 0 ...

Page 19

... Maintain the 2.0 mA current source and all other functionality • Set the thermal flag bit in the SPI output register Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DEVICE OPERATION LOGIC COMMANDS AND REGISTERS The thermal flag bit in the SPI word will be cleared on rising edge of CS provided the die temperature has cooled below the thermal limit ...

Page 20

... Temperature Monitor, supply for switch- PWR Functional Device 11 under Table 7, volts regardless of the DD Figure 13, Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 21

... conversion may be obtained. Using the equation yields the following: Analog Integrated Circuit Device Data Freescale Semiconductor DD MCU The ADC value of 213 counts is the value with 0% error MOSI (neglecting the resistor tolerance and AMUX input offset SCLK voltage) ...

Page 22

... Sleep mode not possible. Current from CS flow through MCU to V that has been switched off. DD Negative edge of CS will put 33993 in Normal mode SPI wake-up is not possible. MCU Interface Description, page 11). Analog Integrated Circuit Device Data Freescale Semiconductor Mode, pull up will ...

Page 23

... The 33993 IC has an internal 5.0 V supply from V A POR circuit monitors the internal 5.0 V supply. In the event Analog Integrated Circuit Device Data Freescale Semiconductor of transients on the V PWR Upon reset the 33993 will enter Normal mode with the internal registers as defined recommended that the MCU periodically update all registers internal to the IC ...

Page 24

... V PWR Power Supply V PWR INT SI SO Figure 15. Power Supply Active in Sleep Mode V PWR Power Supply V PWR Enable INT MC68HCXX Microprocessor CS INT MOSI MISO SCLK AN0 MC68HCXX Microprocessor CS INT MOSI MISO SCLK AN0 Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 25

... For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. Analog Integrated Circuit Device Data Freescale Semiconductor PACKAGING PACKAGE DIMENSIONS DWB SUFFIX EW SUFFIX (PB-FREE) 32-PIN SOICW 98ARH99137A REVISION B PACKAGING PACKAGE DIMENSIONS 33993 25 ...

Page 26

... PACKAGING PACKAGE DIMENSIONS 33993 26 DWB SUFFIX EW SUFFIX (PB-FREE) 32-PIN SOICW 98ARH99137A REVISION B Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 27

... Converted to Freescale form and style. • Added MCZ33993EW/R2 to the ordering information. 6/2007 • Corrected package type designation 5.0 5/2008 • Added statement to Chip Select description on 6.0 Analog Integrated Circuit Device Data Freescale Semiconductor REVISION HISTORY page 9. REVISION HISTORY 33993 27 ...

Page 28

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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