MCP98243-BE/MC Microchip Technology, MCP98243-BE/MC Datasheet
MCP98243-BE/MC
Specifications of MCP98243-BE/MC
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MCP98243-BE/MC Summary of contents
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... Event boundaries. When the temperature changes beyond the specified Event boundary limits, the MCP98243 outputs an Alert signal at the Event pin. The user has the option of setting the temperature Event output signal polarity as either an active-low or active-high comparator output for thermostat operation temperature Event interrupt output for micropro- cessor-based systems ...
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... MCP98243 Sensor Typical Accuracy Performance 50 +85°C A 1,063,478 units 40% 63 Production lots 30% 20% 10% 0% DS22153A-page 2 Statistics: Average = 0.003 °C St. Dev = 0.13 °C ±3 Sigma = ±0.4 °C Temperature Accuracy (°C) © 2009 Microchip Technology Inc. ...
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... — — 1 µA V Resistor) — — Resistor) — 0.7 — s Time to 63% (89°C) — 1.4 — s MCP98243 = -20° Conditions 2 C Bus Inactive voltage DD = 2. 3.3V+150 MHz (Active-Low, Pull-up Resistor (Active-Low, Pull-up Resistor (Active-High, Pull-down (Active-High, Pull-down DS22153A-page 3 ...
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... MCP98243 EEPROM DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated -20°C to +125°C. A Parameters Sym Power Supply Operating Voltage Range V DD Current, EEPROM write I DD_EE Current, EEPROM read I DD_EE Power On Reset (POR) V POR_EE Write Cycle time (byte/page Endurance T = +25°C — A Write Protect Voltage ...
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... IH MIN 2 , the temperature sensor I C interface will time out. A Repeat Start command 2 C-bus system, but the requirement t HD:DAT MIN to avoid unintended generation of Start or Stop F MAX , the temperature sensor becomes partially POR_TS MCP98243 = Units Conditions kHz Note Note 2 ns Note 2 ns ...
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... MCP98243 TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V the Temperature Sensor, and GND = Ground. Parameters Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 8L-DFN Thermal Resistance, 8L-TDFN Thermal Resistance, 8L-TSSOP Thermal Resistance, 8L-UDFN ...
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... Sensor (EEPROM Inactive) 10 EEPROM Read (Sensor in Shutdown Mode) 1 -40 100 120 FIGURE 2-4: Temperature -40 -20 FIGURE 2-5: Temperature. 3 2.5 2 1.5 1 0.5 0 -40 -20 FIGURE 2-6: Voltage vs. Temperature. MCP98243 , and DD - 100 120 T (°C) A Supply Current vs 100 120 T (°C) A Serial Bus Time-Out vs. V POR_TS V ...
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... MCP98243 Note: Unless otherwise indicated -20°C to +125° Event ( 0.3 0.2 SDA V OL 0.1 Event -40 - (°C) A FIGURE 2-7: Event and SDA V Temperature. 125 110 -40 - (°C) A FIGURE 2-8: Conversion Rate vs. Temperature. 1.0 Δ°C/Δ 3.3V + 150 (AC) 0.5 0.0 -0.5 No decoupling capacitor -1 ...
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... A FIGURE 2-14: Shutdown Current vs. Temperature. © 2009 Microchip Technology Inc. = 2.7V to 5.5V, GND = Ground, SDA/SCL pulled- 100 1V 1.5 4.5 5.0 5.5 FIGURE 2-15: 100 120 MCP98243 , and Sensor in Shutdown Mode POR_TS T = -40° +25° +85° +125°C A 2.0 2.5 3.0 3 ...
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... MCP98243 NOTES: DS22153A-page 10 © 2009 Microchip Technology Inc. ...
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... Section 4.0 “Serial Communication”). Table 3-2. 3.5 Temperature Alert, Open-Drain Output (Event) Slave Address The MCP98243 temperature Event output pin open-drain output. The device outputs a signal when the ambient temperature goes beyond the user-pro- grammed temperature limit. (see Section 5.2.3 “Event X ...
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... MCP98243 NOTES: DS22153A-page 12 © 2009 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 MCP98243 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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... TIME OUT (MCP98243, SENSOR ONLY) If the SCL stays low or high for time specified by t the MCP98243 temperature sensor resets the serial interface. This dictates the minimum clock speed as specified in the specification. However, the EEPROM does not reset the serial interface. Therefore, the mas- ter can hold the clock indefinitely to process data from the EEPROM ...
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... FUNCTIONAL DESCRIPTION The MCP98243 temperature sensors consists of a band-gap type temperature sensor, a Delta-Sigma Ana- log-to-Digital Converter (ΣΔ 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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... If temperature drifts beyond the user-specified limits, the MCP98243 outputs a signal using the Event pin (refer to Section 5.2.3 “Event Output Configuration”). In addition, the Critical Temperature Trip register is used to provide an additional critical temperature limit. REGISTER 5-1: REGISTER POINTER (WRITE ONLY) ...
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... SIGN 2 ° °C 2 °C 2 ° SIGN 2 ° °C 2 °C 2 °C 7 < SIGN 2 °C A LOWER °C 2 °C 2 ° MCP98243 Range Accuracy Event Hysteresis SHDN Evt Sel Evt Pol Evt Mod °C 2 °C 2 ° ° °C 2 °C 2 ° ° °C 2 °C 2 ° ° ...
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... CAPABILITY REGISTER This is a read-only register used to identify the temperature sensor capability. In this case, the MCP98243 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 MCP98243 SCL A A SDA Address Byte FIGURE 5-2: Timing Diagram for Reading the Capability Register (See Section 4.0 “Serial Communication”). © 2009 Microchip Technology Inc Capability Pointer MCP98243 MSB Data Master MCP98243 MCP98243 LSB Data Master DS22153A-page 19 ...
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... MCP98243 5.1.2 SENSOR CONFIGURATION REGISTER (CONFIG) The MCP98243 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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... Window Lock Bit (Win. Lock): and T registers can be written. (power-up default) LOWER and T registers can not be written LOWER , T and T (power-up default) UPPER LOWER CRIT and T temperature boundaries are disabled.) UPPER LOWER MCP98243 ‘0000 0001’b DS22153A-page 21 ...
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... Communication”. DS22153A-page Configuration Pointer MCP98243 MCP98243 MSB Data MCP98243 // send START command //WRITE Command //also, make sure bit 0 is cleared ‘0’ // Write CONFIG Register // Write data // Write data // send STOP command LSB Data MCP98243 © 2009 Microchip Technology Inc. ...
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... Repeat START command //READ Command //also, make sure bit 0 is set ‘1’ // READ 8 bits //and Send ACK bit // READ 8 bits //and Send NAK bit // send STOP command MCP98243 Note not necessary to select the register pointer if it was set from the previous read/write. ...
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... If this feature is enabled (Section 5.1.2 “Sensor Configuration Register (CONFIG)”) and the ambient temperature exceeds the specified boundary or window, the MCP98243 asserts an Event output. (Refer to Section 5.2.3 “Event Configuration”). ...
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... UPPER MCP98243 MCP98243 MSB Data MCP98243 Pointer UPPER MCP98243 MCP98243 MSB Data Master MCP98243 MCP98243 LSB Data MCP98243 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 DS22153A-page 25 ...
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... AMBIENT TEMPERATURE REGISTER ( The MCP98243 uses a band gap temperature sensor circuit to output analog voltage proportional to absolute temperature. An internal ΔΣ 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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... STOP command ≥ T //T A CRIT > T //T A UPPER < T //T A LOWER //Clear flag bits < 0°C //T A //Clear SIGN ≥ 0°C //T A //Temperature = Ambient Temperature (°C) MCP98243 BYTES TO TEMPERATURE CONVERSION 4 4 – × × UpperByte 2 + LowerByte 2 × 4 × 4 – – UpperByte 2 + LowerByte 2 = Ambient Temperature (° ...
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... Timing Diagram for Reading +25.25°C Temperature from the T Section 4.0 “Serial Communication”). DS22153A-page Pointer A MCP98243 MSB Data Master MCP98243 Note not necessary to select the register pointer if it was set from the previous read/write LSB Data Master Register (See A © 2009 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 MCP98243 is 0x0054 (hexadecimal). MANUFACTURER ID REGISTER (READ-ONLY) → ADDRESS REGISTER 5-6: R-0 R-0 R-0 bit 15 R-0 R-1 R-0 bit 7 Legend Readable bit ...
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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 MCP98243 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 MCP98243 MCP98243 Resolution to 0.0625°C <0000 0011>b (See A MCP98243 U-0 R/W-0 R/W-0 — Resolution bit Bit is unknown Data MCP98243 DS22153A-page 31 ...
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... Comparator mode is useful for thermostat-type applications, such as turning on a cooling fan or triggering a system shutdown when the temperature exceeds a safe operating range. MCP98243 Active-High Event Output V DD MCP98243 R PU Active-Low Event Output and T registers. The bits CRIT Figure 5-2 shows device must be ...
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... CONFIG register from the MCP98243. © 2009 Microchip Technology Inc. 5.2.4 TEMPERATURE RESOLUTION The MCP98243 is capable of providing a temperature data with 0.5°C to 0.0625°C resolution. The Resolution and can selected using the Resolution register UPPER 8) which is located in address ‘ ...
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... MCP98243 T CRIT T UPPER LOWER Comparator Interrupt S/w Int. Clear Critical Only Note: 1 TABLE 5-3: EVENT OUTPUT CONDITIONS Event Output Boundary Note Conditions ≥ LOWER < LOWER HYST > UPPER ≤ UPPER HYST ≥ CRIT < CRIT HYST ≥ When T and T A CRIT CONFIG (Event output mode) is ignored. ...
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... EEPROM FEATURE DESCRIPTION 5.3.1 BYTE WRITE To write a byte in the MCP98243 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 MCP98243 in the same way byte write. Instead of generating a Stop condi- tion, the master transmits additional data bytes to the MCP98243, 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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... WRITE PROTECTION The MCP98243 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 ...
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... The device response in this mode is shown in Table 5- Word Address MCP98243 MCP98243 at A1 pin, connect A2 pin to GND to initiate CWP cycle. DD 5-4. Both A2 and A1 pins are grounded Table Data MCP98243 and the corresponding slave DD Table 5-5 and Data MCP98243 © 2009 Microchip Technology Inc. ...
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... However, the address pin states need to Table 5-5 and match the slave address bits, as shown Word Address MCP98243 MCP98243 must be within the range of GND MCP98243 Figure 2-13 voltage levels not applied on the A0 HV Table 5- Data MCP98243 + 1V to execute PWP. DD DS22153A-page 39 ...
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... Upon receipt of n+1 the slave address with R/W bit set to ‘1’, the MCP98243 issues an acknowledge and transmits the 8-bit data 1 2 SCL SDA S ...
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... Microchip Technology Inc. set. The master then issues the Address Byte again, but with the R/W bit set to a ‘1’. The MCP98243 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 MCP98243 transmits the first data byte, the master issues an acknowledge, as opposed to a stop condition in a random read. This directs the MCP98243 to transmit the next sequentially addressed 8-bit word (Figure 5-21). ...
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... Summary of Power-on Default The MCP98243 has an internal Power-on Reset (POR) circuit. If the power supply voltage the V and V thresholds, the device POR_TS PRO_EE resets the registers to the power-on default settings. Table 5-7 shows the power-on default summary for the temperature sensor. The EEPROM resets the address pointer to 0x00 hex ...
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... MCP98243 NOTES: DS22153A-page 44 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. 6.2 Thermal Considerations A potential for self-heating errors can exist if the MCP98243 SDA, SCLK and Event lines are heavily loaded with pull-ups (high current). Typically, the self- heating error is negligible because of the relatively small current consumption of the MCP98243. A temperature accuracy error of approximately 0.5° ...
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... MCP98243 NOTES: DS22153A-page 46 © 2009 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. © 2009 Microchip Technology Inc. MCP98243 : : Example Example ABZ ...
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... MCP98243 /HDG 3ODVWLF 'XDO )ODW 1R /HDG 3DFNDJH 0& ± 1RWH 1RWHV DS22153A-page 48 PP %RG\ >')1@ © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98243 PP %RG\ >')1@ DS22153A-page 49 ...
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... MCP98243 /HDG 3ODVWLF 'XDO )ODW 1R /HDG 3DFNDJH 01 ± 1RWH DS22153A-page 50 PP %RG\ >7')1@ © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98243 PP %RG\ >7')1@ DS22153A-page 51 ...
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... MCP98243 /HDG 3ODVWLF 'XDO )ODW 1R /HDG 3DFNDJH 08 ± 1RWH DS22153A-page 52 PP %RG\ >8')1@ © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP98243 PP %RG\ >8')1@ DS22153A-page 53 ...
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... MCP98243 NOTES: DS22153A-page 54 © 2009 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (May 2009) • Original Release of this Document. © 2009 Microchip Technology Inc. MCP98243 DS22153A-page 53 ...
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... MCP98243 NOTES: DS22153A-page 54 © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. Examples: /XXX a) Package MCP98243 . MCP98243-BE/MC: Extended Temp., 8LD DFN pkg. MCP98243T-BE/MC: Tape and Reel, Extended Temp., 8LD DFN pkg. MCP98243-BE/ST: Extended Temp., 8LD TSSOP pkg. MCP98243T-BE/ST: Tape and Reel, Extended Temp., 8LD TSSOP pkg. MCP98243-BE/MNY: Extended Temp., ...
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... MCP98243 NOTES: DS22153A-page 56 © 2009 Microchip Technology Inc. ...
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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, 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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... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...