MCP98242-BE/ST Microchip Technology, MCP98242-BE/ST Datasheet
MCP98242-BE/ST
Specifications of MCP98242-BE/ST
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MCP98242-BE/ST Summary of contents
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... Shutdown or Low-Power temperature event and critical output boundaries. When the temperature changes beyond the specified boundary limits, the MCP98242 outputs an Event signal. The user has the option of setting the Event output signal polarity as either an active-low or active-high comparator output for thermostat operation temperature event interrupt output for microprocessor-based systems ...
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... MCP98242 Notes: DS21996D-page 2 2010 Microchip Technology Inc. ...
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... V — — 0 — — 1M — — cycles V 8 — Applied at A0 pin, MCP98242 Conditions ) WC falling) DD Section 5.4 falling) (see DD Default”) = 3. 3.3V+150 MHz Section 5.2.3.3 Resolution” Note 1 = 5V, DD Note 1 DS21996D-page 3 ...
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... MCP98242 DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated and T = -20°C to +125° Parameters Sym DFN t RES TSSOP t RES Note 1: Characterized but not production tested. INPUT/OUTPUT PIN DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated -20°C to +125°C. A Parameters Serial Input/Output (SCL, SDA, A0, A1, A2) ...
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... Data Transmission MCP98242 Units Conditions — °C/W — °C/W — °C/W = -20°C to +125°C, A Conditions 2 I C™/SMBus (V - 0.15V MAX IH MIN 0.15V 0.15V ...
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... MCP98242 NOTES: DS21996D-page 6 2010 Microchip Technology Inc. ...
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... EEPROM Read (Sensor in Shutdown Mode) 1 -40 100 120 FIGURE 2-4: Temperature. 3. 2.50 2.00 1.50 1.00 0.50 0.00 -40 FIGURE 2-5: Temperature. 3 2.5 2 1.5 1 0.5 0 -40 -20 FIGURE 2-6: Voltage vs. Temperature. MCP98242 , and 3.3V to 3. 100 120 T (°C) A Supply Current vs. = 3.0V to 3.6V - 100 120 T (° Shutdown Current vs. 0 ...
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... MCP98242 Note: Unless otherwise indicated -20°C to +125° 3. 0.3 0.2 SDA 0.1 Event 0 -40 - (°C) A FIGURE 2-7: Event and SDA V Temperature. 125 V = 3.0V to 3.6V DD 110 -40 - (°C) A FIGURE 2-8: Conversion Rate vs. Temperature. 1.0 Δ°C/Δ 3.3V + 150 mV DD ...
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... Section 4.0 “Serial (See Table 3-2. 3.5 Open-Drain Temperature Alert Output (Event) Slave Address The MCP98242 Event pin is an open-drain output. The device outputs a signal when the ambient temperature goes beyond the user-programmed temperature limit. Section 5.2.3 “Event Output (see ...
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... MCP98242 NOTES: DS21996D-page 10 2010 Microchip Technology Inc. ...
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... GND ‘0’. The 7-bit address transmit- DD ted in the serial bit stream must match the selected address for the MCP98242 to respond with an ACK. Bit 8 in the address byte is a read/write bit. Setting this bit to ‘1’ commands a read operation, while ‘0’ commands ...
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... Stop condition. 4.1.7 TIME OUT (MCP98242) If the SCLK stays low or high for time specified by t the MCP98242 temperature sensor resets the serial interface. This dictates the minimum clock speed as specified in the SMBus specification. However, the EEPROM does not reset the serial interface. ...
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... FUNCTIONAL DESCRIPTION The MCP98242 temperature sensors consists of a band gap type temperature sensor, a Delta-Sigma Ana- log-to-Digital Converter ( ADC), user-programmable Temperature Sensor Hysteresis Shutdown Critical Trip Lock Alarm Win. Lock Bit Clear Event Event Status Output Control Critical Event only ...
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... Temperature Upper-Boundary and Lower-Boundary Trip registers are read/writes. If temperature drifts beyond the user-specified limits, the MCP98242 outputs a signal using the Event pin (refer Section 5.2.3 “Event Output Configuration”). In to addition, the Critical Temperature Trip register is used to provide an additional critical temperature limit. REGISTER 5-1: ...
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... SIGN 2 ° °C 2 °C 2 °C SIGN 2 °C A LOWER °C 2 °C 2 ° MCP98242 Range Accuracy Event Hysteresis SHDN Evt Sel Evt Pol Evt Pol °C 2 °C 2 ° ° °C 2 °C 2 ° ° °C 2 °C 2 ° °C 0 ...
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... CAPABILITY REGISTER This is a read-only register used to identify the temperature sensor capability. In this case, the MCP98242 is capable of providing temperature at 0.25°C resolution, measuring temperature below and above 0°C, providing ±1°C and ±2°C accuracy over the active and monitor temperature ranges (respectively) and providing user-programmable temperature event boundary trip limits ...
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... Address Byte MCP98242 SCLK A A SDA Address Byte FIGURE 5-2: Timing Diagram for Reading the Capability Register (See Communication”). 2010 Microchip Technology Inc Capability Pointer MCP98242 MSB Data Master MCP98242 MCP98242 LSB Data Master Section 4.0 “Serial DS21996D-page 17 ...
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... MCP98242 5.1.2 SENSOR CONFIGURATION REGISTER (CONFIG) The MCP98242 has a 16-bit Configuration register (CONFIG) that allows the user to set various functions for a robust temperature monitoring system. Bits 10 thru 0 are used to select Event output boundary hysteresis, device Shutdown or Low-Power mode, temperature boundary and critical temperature lock, temperature Event output enable/disable ...
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... T registers can be written. (power-up default) LOWER and T registers cannot be written LOWER Default”). This bit does not require a double-write and T (power-up default) UPPER LOWER CRIT and T temperature boundaries are disabled.) UPPER LOWER MCP98242 (Section 5.4 “Sum- (Section 5.4 “Sum- DS21996D-page 19 ...
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... DS21996D-page Configuration Pointer MCP98242 MCP98242 MSB Data LSB Data MCP98242 Configuration Pointer MCP98242 MSB Data Master MCP98242 MCP98242 Note not necessary to select the Register Pointer if it was set from the previous read/ write LSB Data Master 2010 Microchip Technology Inc. ...
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... UPPER LOWER CRIT The MCP98242 has a 16-bit read/write Event output Temperature Upper-Boundary Trip register (T 16-bit Lower-Boundary Trip register (T 16-bit Critical Boundary Trip register (T contains 11-bit data in two’s complement format (0.25 °C). This data represents the maximum and minimum temperature boundary or temperature window that can be used to monitor ambient temperature ...
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... Pointer UPPER MCP98242 MCP98242 MSB Data MCP98242 Pointer UPPER MCP98242 MCP98242 MSB Data Master MCP98242 LSB Data MCP98242 Note not necessary to select the Register Pointer if it was set from the previous read/write LSB Data Master Register (See Section 4.0 UPPER 2010 Microchip Technology Inc. ...
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... AMBIENT TEMPERATURE REGISTER ( The MCP98242 uses a band gap temperature sensor circuit to output analog voltage proportional to absolute temperature. An internal ADC is used to convert the analog voltage to a digital word. The converter resolution is set to 0.25 °C + sign (11-bit data). The digital word is loaded to a 16-bit read-only Ambient ...
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... Timing Diagram for Reading +25.25°C Temperature from the T Section 4.0 “Serial Communication”). DS21996D-page Pointer A MCP98242 MSB Data Master MCP98242 Note not necessary to select the Register Pointer if it was set from the previous read/ write LSB Data Master Register (See A 2010 Microchip Technology Inc. ...
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... MANUFACTURER ID REGISTER This register is used to identify the manufacturer of the device in order to perform manufacturer specific operation. The Manufacturer ID for the MCP98242 is 0x0054 (hexadecimal). MANUFACTURER ID REGISTER (READ-ONLY) ADDRESS ‘0000 0110’b REGISTER 5-6: R-0 R-0 R-0 bit 15 R-0 R-1 R-0 bit 7 ...
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... The upper byte of this register is used to specify the device identification and the lower byte is used to specify device revision. The device ID for the MCP98242 is 0x21 (hex). The revision begins with 0x00 (hex) for the first release, with the number being incremented as revised versions are released. DEVICE ID AND DEVICE REVISION (READ-ONLY) ...
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... U = Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared = 30 ms typical typical) CONV = 130 ms typical) CONV = 260 ms typical) CONV Resolution Pointer MCP98242 MCP98242 Resolution to 0.0625°C <0000 0011>b (See A MCP98242 U-0 R/W-0 R/W-0 — Resolution bit Bit is unknown Data MCP98242 DS21996D-page 27 ...
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... CONFIG register from the MCP98242. 5.2.3.3 Temperature Resolution The MCP98242 is capable of providing a temperature data with 0.5°C to 0.0625°C resolution. The Resolution can be selected using the Resolution register (Register 5-8) which ‘ ...
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... FIGURE 5-9: Event Output Condition. 2010 Microchip Technology Inc. Samples/sec (typical UPPER HYST T -T LOWER HYST Event Output Comparator Interrupt the Event output is Comparator mode and bits CRIT HYST MCP98242 CRIT HYST UPPER HYST T -T LOWER HYST Bits A Critical ...
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... EEPROM FEATURE DESCRIPTION 5.3.1 BYTE WRITE To write a byte in the MCP98242 EEPROM, the master has to specify the memory location or address. Once the address byte is transmitted correctly followed by a word address, the word address is stored in the EEPROM Address Pointer. The following byte is data to be stored in the specified memory location ...
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... PAGE WRITE The write Address Byte, word address and the first data byte are transmitted to the MCP98242 in the same way byte write. Instead of generating a Stop condition, the master transmits additional data bytes to the MCP98242, which are temporarily stored in the on-chip page buffer and will be written into the memory after the master has transmitted a Stop condition ...
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... MCP98242 5.3.3 WRITE PROTECTION The MCP98242 has a Software Write-Protect (SWP) feature that allows the lower half array (addresses 00h - 7Fh write-protected or permanently write-protected (PWP). The write-protected area can be cleared by sending Clear Write-Protect (CWP) command. However, once the PWP is executed the protected memory can not be cleared. The device will not respond to the CWP command ...
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... A1 pin, connect A2 pin to GND to initiate CWP cycle. DD MCP98242 needs to be applied to the A0 pin and Table 5-3. Both A2 and A1 pins are Table 5- Data MCP98242 Section 4.0 “Serial needs to be applied to the A0 pin and and the corresponding slave DD Table 5-4 and Data MCP98242 Section 4.0 “ ...
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... However, the address pin states need to match the slave address bits, as shown in Table 5-4 and Word Address MCP98242 MCP98242 is not applied on the A0 pin to execute PWP. HI_WP is not applied on the HI_WP Table 5- Data MCP98242 Section 4.0 “Serial 2010 Microchip Technology Inc. ...
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... Upon receipt of the slave address with R/W bit set to ‘1’, the MCP98242 issues an Acknowledge and transmits the 8-bit data word. The master will not acknowledge (NAK) the transfer but does generate a Stop condition and the ...
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... Address Pointer is set. The master then issues the Address Byte again, but with the R/W bit set to a ‘1’. The MCP98242 then issues an Acknowledge and transmits the 8-bit data word. The master will not acknowledge the transfer but ...
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... Sequential reads are initiated in the same way as a random read, with the exception that after the MCP98242 transmits the first data byte, the master issues an Acknowledge, as opposed to a Stop condi- tion in a random read. This directs the MCP98242 to transmit the next sequentially addressed 8-bit word (Figure 5-17). ...
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... MCP98242 5.4 Summary of Temperature Sensor Power-on Default The MCP98242 temperature sensor has an internal Power-on Reset (POR) circuit. If the power supply voltage V glitches down to the V DD POR device resets the registers to the power-on default settings. Table 5-6 shows the power-on default summary. ...
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... SDA and SCLK lines. Although SMBus specifications only require the SDA and SCLK lines to pull-down 350 µA, with a maximum voltage drop of 0.4 V, the MCP98242 is designed to meet a maximum voltage drop of 0.4 V, with current. This allows lower pull-up resistor values to be used, allowing the MCP98242 to handle higher bus capacitance ...
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... MCP98242 NOTES: DS21996D-page 40 2010 Microchip Technology Inc. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2010 Microchip Technology Inc. MCP98242 : Example ABJ 010 25 ...
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... MCP98242 D N NOTE TOP VIEW A3 DS21996D-page EXPOSED PAD BOTTOM VIEW A NOTE NOTE 2010 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98242 DS21996D-page 43 ...
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... MCP98242 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21996D-page 44 2010 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98242 DS21996D-page 45 ...
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... MCP98242 DS21996D-page 46 2010 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98242 DS21996D-page 47 ...
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... MCP98242 DS21996D-page 48 2010 Microchip Technology Inc. ...
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... D N NOTE 2010 Microchip Technology Inc MCP98242 φ L DS21996D-page 49 ...
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... MCP98242 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS21996D-page 50 2010 Microchip Technology Inc. ...
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... Updated Figure 5-9. Section 7.0 “Packaging Information”: 7. Updated package outline drawings. Revision B (February 2008) The following is the list of modifications: 1. Added TDFN package throughout document. Revision A (September 2006) • Original Release of this Document. 2010 Microchip Technology Inc. ID and MCP98242 DS21996D-page 51 ...
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... MCP98242 NOTES: DS21996D-page 52 2010 Microchip Technology Inc. ...
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... MCP98242 . MCP98242-BE/MC: Extended Temp., 8LD DFN pkg. MCP98242T-BE/MC: Tape and Reel, Extended Temp., 8LD DFN pkg. MCP98242-BE/ST: Extended Temp., 8LD TSSOP pkg. MCP98242T-BE/ST: Tape and Reel, Extended Temp., 8LD TSSOP pkg. MCP98242-BE/MNY: Extended Temp., 8LD TDFN (nickel palladium gold) pkg. MCP98242-BE/MUY: Extended Temp., ...
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... MCP98242 NOTES: DS21996D-page 54 2010 Microchip Technology Inc. ...
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... PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-6578-300 Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-213-7830 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2010 Microchip Technology Inc. 08/04/10 ...