mc33975 Freescale Semiconductor, Inc, mc33975 Datasheet
mc33975
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mc33975 Summary of contents
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... VDD VDD WAKE MCU SI MOSI SCLK SCLK MISO INT INT AMUX AN0 GND Document Number: MC33975 Rev 7.0, 2/2008 33975 33975A MULTIPLE SWITCH DETECTION INTERFACE WITH SUPPRESSED WAKE-UP EK SUFFIX (PB-FREE) 98ASA10556D 32-PIN SOICW EP ORDERING INFORMATION Temperature Device Package Range ( -40°C to 125°C ...
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DEVICE VARIATIONS Table 1. Device Variations Device 33975 33975A 33975 2 DEVICE VARIATIONS Switch Input Voltage Range -14 to 38V DC -14 to 40V DC Reference Location 5 5 Analog Integrated Circuit Device Data Freescale Semiconductor ...
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V V PWR PWR 32.0 4 SP0 SP1 4.0 V 2.0 16.0 Ref mA mA SP2 SP3 SP4 V V PWR PWR SP5 32.0 4 SP6 SP7 4.0 V 2.0 16.0 Ref ...
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PIN CONNECTIONS SCLK VPWR Table 2. Pin Definitions A functional description of each Pin can be found in the Functional Pin Description section on page 12. Pin Pin Name Formal Name 1 GND Ground 2 SI SPI Slave In 3 ...
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ELECTRICAL CHARACTERISTICS Table 3. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these limits may cause malfunction or permanent damage to the device. Rating ELECTRICAL RATINGS VDD Supply Voltage SI, SO, SCLK, , AMUX CS, ...
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ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 3. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these limits may cause malfunction or permanent damage to the device. Rating ELECTRICAL RATINGS Thermal Resistance Junction to Ambient Between the ...
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STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics Characteristics noted under conditions of 3.0V ≤ V noted. Where applicable, typical values reflect the parameter’s approximate average value with V Characteristic POWER INPUT Supply Voltage Supply Voltage Range Quasi-Functional Fully Operational ...
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions of 3.0V ≤ V noted. Where applicable, typical values reflect the parameter’s approximate average value with V Characteristic SWITCH INPUT (CONTINUED) Input Offset Current when ...
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Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions of 3.0V ≤ V noted. Where applicable, typical values reflect the parameter’s approximate average value with V Characteristic DIGITAL INTERFACE (11) Input Logic High-Voltage Thresholds (11) Input Logic Low-Voltage Thresholds ...
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ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions of 3.0V ≤ VDD ≤ 5.5V, 8.0V ≤ V noted. Where applicable, typical values reflect the parameter’s approximate average value with V Characteristic ...
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CS 0.2 VDD t LEAD 0.7 VDD SCLK 0.2 VDD 0.7 VDD SI 0.2 VDD t SO(EN) 0.7 VDD SO VD 0.2 D VPWR VDD WAKE INT CS SGn Power-Up Tri-State Sleep Normal Mode Command Command (Disable Tri-State) Figure 5. ...
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FUNCTIONAL DESCRIPTIONS INTRODUCTION The 33975 device is an integrated circuit designed to provide systems with ultra-low quiescent sleep/wake-up modes and a robust interface between switch contacts and a microprocessor. The 33975 replaces many of the discrete components required when interfacing ...
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In Sleep Mode with the pin high, the falling edge of WAKE will place the 33975 in Normal Mode. In Sleep Mode WAKE with VDD applied, the INT pin must be high for a negative edge of to wake up ...
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... FUNCTIONAL DESCRIPTIONS FUNCTIONAL INTERNAL BLOCK DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION MC33975 - Functional Block Diagram Analog Control and Protection Circuitry r r MCU Interf r r ace and Control Interrupt/Wake-up Control & Protection Figure 7. Functional Internal Block Description ANALOG CONTROL AND PROTECTION CIRCUITRY: The 33975 is designed to operate from 5.5V to 38/40V on the VPWR terminal ...
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The 33975 device directly interfaces to a 3.3V or 5.0V microcontroller unit (MCU). SPI serial clock frequencies up to 6.0MHz may be used for programming and reading switch input status (production tested at 4.16MHz). illustrates the configuration between an MCU ...
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FUNCTIONAL DEVICE OPERATION OPERATIONAL MODES FUNCTIONAL DEVICE OPERATION POWER SUPPLY The 33975 is designed to operate from 5.5V to 38/40V on the VPWR pin. Characteristics are provided from 8.0V to 28V for the device. Switch contact currents and the internal ...
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WAKE-UP/INTERRUPT REGISTER The Wake-up/Interrupt Register defines the inputs that are allowed to wake the 33975 from Sleep Mode or set the pin low in Normal Mode. Programming the wake-up/interrupt bit to logic [0] will disable the specific input from generating ...
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FUNCTIONAL DEVICE OPERATION OPERATIONAL MODES Table 9. Wetting Current Timer Enable Command Wetting Current Timer Commands TRI-STATE REGISTER The ...
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Table 12. Analog Channel Bits 43210 00000 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111 10000 10001 10010 10011 10100 10101 10110 Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DEVICE OPERATION Analog ...
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FUNCTIONAL DEVICE OPERATION OPERATIONAL MODES CALIBRATION OF TIMERS In cases where an accurate time base is required, the user may calibrate the internal timers using the calibration command (refer to Table 13). After the 33975 device receives the calibration command, ...
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MSB Command Bits Wetting Current Timer Enable Command Timer Timer OFF = 0 (Default state = 1) Tri-state Command Input Tri-state=1 Input ...
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FUNCTIONAL DEVICE OPERATION OPERATIONAL MODES The 33975 device will exit the Normal Mode and enter the Sleep Mode only with a valid sleep command. SLEEP MODE Sleep Mode is used to reduce system quiescent currents. Sleep Mode may be entered ...
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Figure 5, page 11 graphical description of how the 33975 device exits Sleep Mode and enters Normal Mode. Notice that the device will exit Sleep Mode when the interrupt timer expires or when a switch change of state ...
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TYPICAL APPLICATIONS OPERATIONAL MODES The 33975’s primary function is the detection of open or closed switch contacts. However, there are many features that allow the device to be used in a variety of applications. The following is a list of ...
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VBAT SP0 VPWR SP1 V VDD VBAT SP7 WAKE SI SG0 SCLK V V SG1 PWR PWR 4 INT 1 4.0mA SG12 AMUX PWR PWR 1 32 4.0 Analog Sensor ...
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TYPICAL APPLICATIONS OPERATIONAL MODES VBAT V V PWR PWR 32 mA 750Ω SG0 100kΩ 4.0 V Ref V V PWR PWR 32 mA SP0 PWR PWR 32 mA SG13 4.0 V Ref Figure 15. MOSFET or ...
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Therefore, when sending the sleep command, one device will enter sleep before the other. For multiple devices in a system recommended that the devices are controlled in serial (S0 from first device is connected second ...
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TYPICAL APPLICATIONS OPERATIONAL MODES V BAT V 33975 BAT SP0 SP1 V BAT SP7 WAKE SG0 SG1 SCLK AMUX SG12 SG13 V BAT 33975 V BAT VPWR SP0 SP1 WAKE V BAT SP7 SG0 SG1 SCLK AMUX SG12 SG13 Figure ...
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The silicon device is packaged in the 32 pin SOIC with an exposed pad. The exposed pad is thermally conductive and electrically isolated to the die recommended that the exposed pad be electrically connected to ground. Important: For ...
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PACKAGE DIMENSIONS (CONTINUED) PACKAGE DIMENSIONS PACKAGE DIMENSIONS (Continued) 33975 30 EK SUFFIX 32-PIN EXPOSED PAD 98ASA10556D REVISION B Analog Integrated Circuit Device Data Freescale Semiconductor ...
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... Updated to Freescale form and style • Added MCZ33975EK/R2 and MCZ33975AEK/R2 • Removed Peak Package Reflow Temperature During Reflow, and added Reflow Temperature During Reflow • Removed MC33975AEK/R2 from the Ordering Information 11/2007 6.0 • Replaced figures for Sleep • Adjusted ESD voltages for • ...
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... Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com MC33975 Rev 7.0 2/2008 RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http://www.freescale.com Freescale sales representative. For information on Freescale’ ...